高中英语必修五Unit1Great scientists英文说课稿

高二英语必修五Unit1Greatscientists教案Unit1GreatscientistsTheFirstPeriodReadingTeachinggoals教学目标Targetlanguage目标语言a.重点词汇和短语attend,control,severe,pub,iediately,handle,instruct or,pup,contribute,conclude,steaengine,virus,putfora rd,aeaconclusion,exposetob.重点句式Topreventthisfrohappeningagain,johnSnosuggestedthat ...P3Abilitygoals能力目标Enablethestudentstotalaboutscienceandscientists.Learningabilitygoals学能目标Enablethestudentstolearnaboutsoefaousscientistsandt heircontributionsandhotoorganizeascientificresearch.Teachingiportant&difficultpoints教学重难点Talaboutscienceandscientists.Teachingethods教学方法Tas-basedactivities.Teachingaids教具准备Aputerandaprojector.Teachingprocedures&ays教学过程与方式StepⅠLead-inAsthestudentstothinofsoegreatinventionsandinventors inhistory.T:elebactoschool,everyone.Iguessostofyouhaveenjoyed yourholiday.aybeIshouldsayeveryonehasenjoyedascient ificlife.hy?Becauseyouhaveenjoyedtheresultsofthesci enceandscientists.Nocanyoutellethescientistshoinven tedthelights,thegraophoneandtheputer?S1:Edisoninventedthelightsandthegraophone.S2:ThefirstputerasinventedbyagroupofAericanscientis ts.StepⅡaringupFirst,assoequestionsaboutgreatscientists.Second,asa llthestudentstotrythequizandfindouthonostheost.T:younoourlifeiscloselyrelatedtoscienceandscientist s.ebenefitalotfrothe.canyounaeoutasanyscientistsasp ossible?S1:Neton.S2:att.S3:Franlin.Sapleansers:Archiedes,AncientGree,aatheatician.charlesDarin,Britain.ThenaeofthebooisoriginofSpecie s.ThoasNeen,British,aninventorofsteaengine.Gregorendel,czech,abotanistandgeneticist.ariecurie,PolishandFrench,acheistandphysicist.ThoasEdison,Aerican,aninventor.LeonardodaVinci,Italian,anartist.SirHuphryDavy,British,aninventorandcheist.ZhangHeng,ancientchina,aninventor.0.StepperHaing,British,aphysicist.StepⅢPre-readingGetthestudentstodiscussthequestionsonpage1iththeirp artners.Thenasthestudentstoreporttheiror.Encouraget hestudentstoexpresstheirdifferentopinions.T:No,class,pleaselooattheslide.Discussthesequestion sithyourpartners.ThenI’llassoestudentstoreporttheiror.Shothefolloingonthescreen.hatdoyounoaboutinfectiousdiseases?hatdoyounoaboutcholera?Doyounohotoproveaneideainscientificresearch?hatorderouldyouputthesevenin?justguess.Sapleanser1:S1:Letetry.Infectiousdiseasescanbespreadeasily.They haveanunnoncauseandaydogreathartopeople.S2:Peoplecouldbeexposedtoinfectiousdiseases,soayani als,suchasbirdflu.S3:AIDS,SARSareinfectiousdiseases.S4:Infectiousdiseasesaredifficulttocure.Sapleanser2:S1:Inosth.aboutit.Firsteshouldfindtheproble.Then,th inofasolution.S2:eshouldcollectasuchinforationaspossible.S3:Analyzingresultsistheostiportantstage.S4:Beforeeaeaconclusion,itisnecessaryforustorepeats oestagesorprocesses.Sapleanser3:S1:Ithin“Findaproble”shouldbethefirststage.S2:“aeupaquestion”shouldfollothefirststage.S3:“Thinofaethod”,“collectresults”and “Analyzeresults”areafterthat.S4:ofcourse,before“aeaconclusion”,eshould “Repeatifnecessary”.T:elldone!heneanttosolvesoeprobles,firsteshouldfind outtheproble,dosoeresearchonit,proveyourfindings,an dthenaeaconclusion.Thisisascientificandobjectiveayofresearching.Nolet’sseehodoctorjohnSnodidhisresearch.StepⅣReadingLetthestudentssitheholepassageandtrytoorouttheeanin gsoftheneordsandstructuresusingcontext.T:TheeffectofcholerainthenineteenthcenturyLondonasd evastating.anypeoplediedithoutnoingthereason.Itasdo ctorjohnSnohosavedthepeople.Pleaselooatthescreen.Le t’sreadtheholepassageandfindanserstothequestions.Shothequestionsonthescreen.hatconditionsalloedcholeradevelop?hydoyouthinpeoplebelievedthatcholeraultipliedinthea irithoutreason?hatevidencedidjohnSnogathertoconvincepeoplethatidea 2asright?Sapleansers:S1:Thedirtyateradethecholeradevelopquicly.S2:Becausepeoplecouldnotunderstanditscauseandcouldn otgetitcured.Sopeopleiaginedthatsoepoisonousgasinth eaircausedthedeaths.S3:Hefoundthatanyofthedeathsereneartheaterpuphileso eareasfaraayfrotheaterpuphadnodeaths.Sohenpeopleere asednottousetheaterpup,thediseasebegantoslodon.Inth isay,johnSnohadshonthatcholeraasspreadbygersandnoti nacloudofgas.StepⅤTextanalyzingAsthestudentstoanalyzethetextingroups.T:Noclass.canyoutellehatstyleofthepassagebelongsto?S1:Ithinitisareport.T:Pleaselooatthechartonthescreen.Thechartshosthatea chparagraphofthetextexplainsjohnSno’sstagesinhisresearch.Pleasereadthetextandfindoutthe generalideaofeachparagraphandatchthestageitheachpar agraph.Discussitingroups,andthenreportyouransers.ParagraphsStagesGeneralideas2Sapleansers:S1:ygroup’sopinionisthis:stageone“Findaproble”isexpressedinparagraphone.Thegeneralideaisliethis:j ohnSnoantedtofindthecausesofcholera.S2:ouranserisliethis:paragraphtoexpressestheseconds tage“aeupaquestion”.Thegeneralideaisliethis:johnSnoan tedtoprovehichtheoryascorrect.S3:“Thinofaethod”isthethirdstage.Anditiscontainedinparagraphthree.Th egeneralideaisliethis:johnSnocollecteddataonthoseho ereillordiedandheretheygottheirater.S4:Thefourthstage“collectresults”liesinparagraphfour.Itsgeneralideaisliethis:johnSno plottedinforationonaaptofindoutherepeoplediedordidn otdie.S5:ourgroupbelieveparagraphfivecontainsthefifthstag eofjohnSno’sresearch.Thegeneralideaisliethis:johnSnoanalysedth eatertoseeifthatasthecauseoftheillness.Sothisstagei sto“Analysetheresults”.S6:Thesixthstageis “Repeatifnecessary”.Itiscontainedinthesixthparagr aph.Thegeneralideaisliethis:johnSnotriedtofindother evidencestoconfirhisconclusion.S7:Thelastparagraphisabouttheseventhstage “aeaconclusion”.Itsgeneralideaisliethis:Thepollut eddirtysourceofdriningaterastoblaeforthecauseoftheL ondoncholera.Assoestudentstoputtheiransersinthechart.ParagraphStagesGeneralideasFindaprobleThecausesofcholeraaeupaquestionThecorrectorpossibletheorThinofaethodcollectdataonherepeopleereillanddiedand heretheygottheiratercollectresultsPlotinforationonaaptofindoutherepeopl ediedordidnotdieAnalysetheresultsAnalysetheatertoseeifthatisthecaus eoftheillnessRepeatifnecessaryFindotherevidencestoconfirhisconcl usionaeaconclusionThepolluteddirtysourceofdriningaterast oblaeforthecauseoftheLondoncholeraStepⅥHoeor1.Getoreinforationaboutsoeinfectiousdiseasesan dodernscientists.FinishtheExercises1,2,3onpages3and4.教后反思：在高考阅读中，常常会出现对文中单词或词组词义的猜测，在平时的阅读教学中如何渗透对学生这一方面能力的培养，也是教师应该思考的一个问题。

《unit1 Great Scientists》说课稿各位评委老师，上午好！我是号考生，我今天说课的题目是《unit1 Great Scientists》。

我主要从教材分析、教学方法与策略、教学过程、板书设计等几个步骤向大家详细地讲解我对这节课的安排。

一．说教材1. 教材内容本节课是人教课标版必修5第一单元的第一课时的Reading部分，是该单元的主要内容，它介绍了英国著名医生John Snow是如何通过考察、分析、探究的科学方法，发现并控制“霍乱”这种传染病的。

通过阅读课文，使学生感悟科学家的周密观察、勇于探索、认真分析的科学精神，使学生了解科学方发现的全过程具有其科学的严密性。

2. 教学目标结合单元教学要求和本课特点，充分考虑学生的年龄特点、认知水平，遂将本课的教学目标确定为：知识目标1) Get students to learn the useful new words and expressions in this part.2) Let students learn about some great scientists and their contribution.3) Have students read the passage and know about John Snow and how he defeated “King Cholera”.能力目标1) Develop students’ reading ability and let them learn different reading skills.2) Enable students to talk about great scientists and tell their stories.情感目标1) Let students learn from great scientists, stimulate their love and respect for them and develop their moral qualities.2) Develop student’s sense of cooperative learning.3. 教学重点因为本组教材的重点了解项目是“John Snow 破解King Cholera难题”，所以确定本课的教学重点是：1) Let students learn about some great scientists and their contributions.2) Get students to read the passage and know about John Snow and how he defeated “ King Cholera”.3) Have students learn different reading skills.4．教学难点考虑到学生拓展阅读能力，语言输出能力等方面还需进一步努力，所以将本课的教学难点确定为：1) Develop students’ reading ability.2) Enable students to talk about great scientists and tell their stories.3) Let students learn how to organize scientific research.二．说教法和学法1. 教学方法引导学生独立思考，合作学习，进行师生、生生互动的“任务型”教学，设计了许多易于操作的任务型活动。

Unit 1 Great scientistsPeriod OneTeaching aims:1.Promote the Ss to know sth. about great scientists.2. Learn some new words and expressions.3. To examine a new scientific idea.4. Comprehension.Main points:Warming up and Reading passageDifficult points: ComprehensionTeaching procedures:Step 1. Warming up1. Show the Ss some pictures of great scientists and ask them to talk about them.2. The Ss discuss in groups and walk along to offer them help if needed.3. Work out their answers by themselves.4. Check their answers.Step 2. Pre-reading1. The Ss discuss the stages in examining a new scientific idea in pairs by asking the questions in the pre-reading.2. Ask the Ss to put them in order and get their answers.Step 3. Reading passage1. Let the Ss go over the passage and try to find the hard words, expressions and sentences they have.2. Explain the difficulties.3. Ask the Ss to read the passage more carefully and then try to complete the chart in the comprehending by discussing in groups.4. Choose some Ss to answer the questions in the comprehending.5. Ask the Ss to choose one of the paragraphs to read aloud fluently.Step 4. HomeworkRead the passage again and go over Learning about language.Period TwoTeaching aims and demands：1. Discover the useful words and expressions.2. Learn and improve the use of useful words and expressions.Main points:Learn to use the words and expressions that the Ss discover. Difficult points: Improve the use of the words and expressions. Teaching procedures:Step 1. Learning about language1. Discover the useful words and expressions in this unit in groups of four.2. Ask the Ss to show their results to the class.3. Ask them to study the words and expressions in Ex.1.4. Ss have a discussion and do the exercises.5. Check their answers.6. Change the verbs into nouns and make sentences by using “make a …” Step 2. Using words and expressions1. Make sure the Ss know the words and expressions.2. Let the Ss work in groups to complete the blank in Ex.1.3. Check their answers.4. Do the translations. Ss discuss the sentences and the translate them into English, using the words and phrases in brackets.Step 3. Words learning1. Show the Ss a list of prefixes to talk about them.2. Ask them to work in groups to find some words with the prefixes and study their meanings.3. Let them show their results to the class.4. Walk around the class to give them help if needed.Step 4. Study the use and meanings of suggest1. Study the meaning of suggest by looking the dictionary entry.2. Match the meanings with the sentences on the right in Ex.4.3. Check their answers.Step 5. HomeworkWrite down the translation Ex.2, 4, 6 and 7 in the exercise book.Period ThreeTeaching aims and demands:1. Discover the useful structure.2. Learn to use the grammar of past participle.3. Enable the Ss understand the past participle using as attribute and predicative.Main points:Learn the usage of the past participle using as attribute and predicative.Difficult points:Use the useful structure.Teaching procedures:Step 1. RevisionReview the past participle of some verbs.Step 2.1. Look at the chart and study the phrases.Past participle as the attribute and the predicative(1) terrified people(2) reserved seats(3) polluted water(4) a crowded room(5) a pleased winner(6) children who look astonished(7) a vase that is broken(8) a door that is closed(9) the audience who feel tired(10) an animal that is trapped3. Ask the Ss the following questions:(1) What kind of words before the past participles?(2) What kind of words after the past participles?4. Ask the Ss find the sentences using the past participle in the reading passage.5. Ss have a discussion and complete the chart with the same meaning of the phrases above.6. Ss show their results to the class.7. Complete the sentences in Ex.3.Step 3. Using structure1. Make sure the Ss know the words and the discuss in groups to finish the sentences using past participle.(Ex.1)2. Rewrite the sentences into one sentence using the past participle as the attribute or predicative.3. Check their answers.Step 4. HomeworkWrite down 1, 3, 5, 7 of Ex.2 in the exercise book.Period FourTeaching aims and demands：1. Improve the Ss listening skills.2. Know more about great scientists.Main points:Listening and speakingDifficult points:Get to know the information of listening materials. Teaching procedures:Step 1. Listening and speaking1. Listen to the tape and answer the questions.(1) What did Qian Xuesen study first?(2) What experience did he get in America that was very useful for China?(3) What was Qian Xuesen’s achievement when he returned to China from America?(4) How has he been honoured in China?(5) How did Steve honour him?Step 2. Speaking1. Ss discuss what scientific job they will do in the future in pairs by using the questions and expressions on Page 6.2. Ask some Ss to talk in class.Step 3. Listening and talking1. Play the tape for the Ss to listen and finish the exercises in the workbook, pause from time to time if needed.2. Check their answers.3. Work in pairs. Imagine you are going to meet a specialist about a newly-found flower by using the useful sentences on Page 42.Step 4. Listening task1. Play the tape for the Ss to get the information of the listening task.2. Check their answers.Step 5. HomeworkPrepare the reading task.Period FiveTeaching aims and demands：Improve the Ss reading skills and their talent in getting the information. Main points:Reading and reading taskDifficult points:Finding the Euler path.Teaching procedures:Step 1. RevisionRevise the past participle used as the attribute and predicative.Step 2. Reading1. Ss read the passage as fast as they can and then draw the two theories of the universe in groups.2. Ask the Ss to show their pictures to the class.3. Ss read the passage again and find the problems they have.4. Solve the Ss’ problems.5. Discuss in pairs. If you were Nicolaus Copernicus, would you have hidden your theory for so many years? Why?6. Choose some Ss to share their ideas to the class.Step 3. Reading task1. Ss read the passage and answer the following questions.(1) What is odd point? (2) What is even point? (3) What rule did Euler find?2. Ss discuss in groups and try to find the answers.3. Teacher walks around to offer them help.4. Use the rule to see if you can go over the diagram, not missing any points or going over any line twice.( See figures on Page 46)5. Ss work in groups.Step 4. HomeworkWrite a short passage about Copernicus.Period SixTeaching aims and demands:1. Try to write sth persuasive.2. Learn to write a report about people.Main points：Make a plan in discussion.Difficult points：Write a passage / a report.Teaching procedures：Step 1. Writing1.Ask the Ss to read the passage again and gather some information about Copernicus.2. Plan to write a letter.Step 2. Writing taskWrite a report about your scientist, his/her life, achievements and the key to his/her success.1. Before you begin to write, remember to put your information under three headings: life, achievements and key to success.2. Plan your report like the one on P47.3. Ask them to read their plans.4. Begin to write the report.Step 3. HomeworkComplete the report and write down on the exercise book.。

必修五 Unit 1 Great ScientistsPeriod 5 GrammarTeaching Aims:1. Get the hang of past participle used as attributive and predicative.2. Know the difference between V-ing form and the past participle used as the attribute and predicative.Teaching Important Points:1. Enable the students to use the Past Participle as the Attribute & Predicative in real situations.Teaching difficult points1.Have the Ss sum up the function of the past participle2.Know the difference between V-ing form and the past participle used as theattribute and predicative.Teaching Methods:1.Inductive , comparison, explanation and exercise method2.cooperative workTeaching ProceduresStep 1 RevisionCheck the homework.Step 2 Grammar LearningPart 1 Competition.Divide the class into four teams. Each team chooses one student as their leader. The leader will choose the amount of money which stands for each question and can choose any one in the team to answer the question. If the answer is correct, the group will get the amount money. If not, they will lose the money.1. What do you know about Dr. John Snow’s being well-known in London?He attended Queen Victoria to ease the birth of her babies.2. From what disease did Londoners suffer in his age and why did he get inspired? They exposed themselves to cholera. He got inspired when he thought about helping ordinary people exposed to cholera.Ordinary people who were exposed to cholera3.Why did so many terrified people die every time there was an outbreak?Neither its cause, nor its cure was understood4. When did Dr. Snow think the disease would be controlled?He knew it would never be controlled until its cause was found.5. What was the second theory explaining how the disease killed people?People absorbed this disease into their bodies with their meals. From the stomach the disease attacked the body quickly and soon the affected person was dead.6. Where did the water of pump from and how did it get polluted?It came from the river, which had been polluted by the dirty water from London7. What did Dr. Snow advised the people in Broad Street do?He told the astonished people in Broad Street to remove the handle from the water pump so it could not be used8.What else did Dr. Snow find in another part of London that were linked to the Broad Street outbreak?In addition, he found 2 other deaths.9. What conclusion did Dr. Snow tell the public?He announced that polluted water carried the disease.10.To prevent the cholera from spreading again, what did John Snow do?He suggested that the source of all water supplies be examined and that new methods of dealing with polluted water be found. The water companies werealso instructed not to expose people to the polluted water anymore.11. Why were these families working in the pub at 7 Cambridge Street not affected ? Because they were given free beer and so had not drunk the water from the Broad Street pump.Now please look at these phrases esp. the words in red. What’s the same characteristic of these words? That’s wha t we will talk about today---the past participlePart 2 The past participle used as the attribute and predicative过去分词的句法功能：1．过去分词作定语(Attribute)1) 在句中的位置单个的过去分词作定语时，位于它所修饰的名词或代词前面；过去分词短语作定语时，位于它所修饰的名词或代词后面。

Module 5 Unit 1 Great scientists遂昌中学刘仁海分课时教案Period 1 Warming up, Pre-reading & ReadingTeaching goals:1.To talk about some great scientists and their achievements.2.To develop some basic reading skills.3.To get the general idea of the passage and to relate the passage to stages in a scientific experiment. Teaching procedures:Step one Warming upIntroduce some famous scientists and their achievements, and then do the quiz.There are some great scientific achievements that have changed the world. Can you name some of them? What kind of role do they play in the field of science? Do these achievements have anything in common? Match the inventions with their inventors below before you answer all these questions.Alexander Bell electricityThomas Edison the First telephoneLaite Brothers the electric LampMadame Curie black holes in UniverseFranklin Theory of GravitySteven Hawking the First PlaneElbert Einstein RadiumIsaac Newton the Theory of RelativityStep two Reading1.Pre-reading:1). Pair work : What do you know about infectious diseases?2). Group work: Do you know how to prove a new idea in scientific research? Discuss in small groups the stages in examining a new scientific idea. What order would you put them in?draw a conclusion think of a method collect results make up a questionfind a problem analyse the results find supporting evidence repeat if necessary2. While-reading:1).Predicting:Introduce the title of the passage—John Snow Defeats King Cholera.●What does the title imply?●Predict what the text is about after reading the title and the first paragraph.●Guess what kind of person John Snow was by analyzing the key words in the first paragraph.2). Skimming:●Get the students to read the passage fast . Ask them to pay attention to the first sentence in each paragraph andtry to find several key words to sum up the main idea of the whole passage.●Compare what the students have predicted with the content given by the author.●Read the passage again to get the general idea of each paragraph.Para.1: The causes of cholera.Para.2: The correct or possible theory.Para.3: Collect data on those where people were ill and died and where they got their water. Para.4: Plot information on a map to find out where people died or did not die.Para.5: Analyse the water to see if that is the cause of the illness.Para.6: Find other evidences to confirm his conclusion.Para.7: The polluted dirty source of drinking water was to blame for the cause of the London cholera.3). Scanning:●Read the passage and try to put the correct stages into the reading about research into a disease.A. draw a conclusionB. think of a methodC. collect resultsD. make up a questionE. find a problemF. analyse the resultsG. find supporting evidenceH. repeat if necessaryKeys: E→D→B→C→F→G→A●Answer some detailed questions about the passage and learn some language points:1. Wha t do you know about Dr. John Snow’s being well-known in London?(He attended Queen Victoria to ease the birth of her babies.).e.g. I may be late – I have got one or two things to attend to.Mother had to attend to her sick son .2. From what disease did Londoners suffer in his age?(They exposed themselves to cholera.).e.g. The wolf opened its mouth to expose a row of sharp teeth.Don’t expose your skin to the sun; your skin will be hurt.People in many provinces of China exposed themselves to the SARS in 2003.3. Did people know how to cure the disease?e.g Aspirin is said to be a wonderful cure for the pain.Although the boy was beyond cure, his parents tried to cure him of bad habits.4.When did Dr. Snow think the disease would be controlled?(He knew he would never be controlled until its cause was found.)e.g. The Ministry of Health has set up a program to control the spread of AIDSThe buttons control the temperature in the building5. What was the second theory explaining how the disease killed people?(People absorbed this disease into their bodies with their meals.)be absorbed in = concentrate oneg. He is absorbed in the research of Chinese history recently.absorb one’s attentioneg. Chinese history absorbs his attention recently.5.How serious was the disease outbreak in London?(The cholera outbreak was so severe that more than 500 people had died in 10 days.)e.g. He has such a severe illness that he has been in hospital.I was caught in a severe storm last night and couldn’t go back home in time.7. Did the map which Dr. Snow draw help find the cause of the disease?(The map gave a valuable clue about the cause of the disease.)e.g. -- What is the value of this 18k white gold diamond necklace?-- It cost me $2,000 (=It was worth $2,000.),but I valued the necklace at $1,000.It was a valuable diamond necklace.We never know the value of water till the well is dry.8. Where were many of the deaths in Broad Street?(Many of the deaths were near the water pump in Broad Street.)e.g. If you have a flat tyre, you will pump air into the tyre.We had a debate yesterday. The lively debate really pumped us up.9. Why did some houses have no deaths?(These families worked in the pub at 7 Cambridge Street. They were given free beer and so had not drunkthe water from the Broad street pump.)10. What did Dr. Snow think was responsible for the disease?(It seemed the water was to blame.)e.g. They blamed the secretary for the delay of the plan.The driver was not to blame for the traffic accident.He is ready to take the blame for what had happened.11. What did Dr. Snow advised the people in Broad Street do?(He told the people to remove the handle from the water pump so it could not be used.)12. What else did Dr. Snow find in another part of London that were linked to the Broad Street outbreak?(In addition, he found 2 other deaths.)e.g. The new bridge will link the island to the mainland.Compare: in addition, also, as well as, besidesIn addition to apples you asked for, I bought you some oranges.13. What conclusion did Dr. Snow tell the public?(He announced that polluted water carried the disease.)e.g. The captain announced that the plane was going to land.The army announced a cease-fire.14. What did Dr. Snow tell the water companies?(They were instructed not to expose people to polluted water anymore.)e.g. She instructed me in the use of this telephone.I've been instructed to wait here until the lecturer arrives.3. Post-reading:Work in groups of four and discuss the following questions:1).What should you do if you're traveling to a country that has a cholera outbreak according to Snow’s theory? (Drink only water that you have boiled or treated with chlorine or iodine. Other safe drinks include tea or coffee made with boiled water and carbonated, bottled beverages with no ice. Eat only food that's been thoroughly cooked and is still hot, or fruit that you've peeled yourself. Avoid undercooked or raw fish and shellfish. Avoid raw salads and vegetables. Avoid food and drinks from street vendors.)2.) What spirit can we find in John Snow? As a student, what should we learn from him? Step three ConsolidationListen to the tape and get a better comprehension of the passage. While listening , pay special attention to the new words and expressions as well as the sentence structures they have learned. Step four Homework1.Read the passage aloud after class.2.Prepare for comprehending and learning about language.3.Writing: What I think of John Snow.Period 2 Comprehending & learning about language.Teaching goals:1.To find the scientific report by John Snow and to further understand the passage.2.To get a better understanding of the passage.3.To discover useful words and expressions, structures.Teaching procedures:Step one Revision1.Ask some students to read the text aloud fluently.2.Check the homework exercises.Step two Comprehending1.Fill in the chart after reading the passage.2.Read the passage again and answer these questions.1). Cholera was a 19th century disease. What disease do you think is similar to cholera today?2). John Snow believed Idea 2 was right. How did he finally prove it?3). Do you think John Snow would have solved this problem without the map? Give a reason.Step three Learning about the language1.Discovering useful words and expressions.1)Choose the suitable words or expressions to complete this passage: valuable, instruct, cure, expose, look into, examine, put forward, immediately, announceLi Heping was a famous football player, but his career came to an end when he became very ill. The doctor _________ him but could not find the cause of this illness. He___________ the theory that Li Heping had been _______ to a new virus. He knew he would not be able to ____ him___________, but promised he would ________the possibility of finding one in the future. Sadly, Li Heping __________ that he would take up a new career to _______ footballers in planning for the future. At his last match he thanked his fans for their _______ support by singing the popular song: “Thanks for the memory”.2). Sometimes in English we put the verb make with a noun instead of using a simple verb; for example, make a mistake instead of to mistake. Look at these simple verbs and make another construction using make + a + noun.3). In English verbs like make are very active and useful. Try to remember them and make sentences with the following words.make a face make friends make money make up one’s way to make suremake a decision make up one’s mind make the bed make room for4). This is a report on living conditions in England in the nineteenth century. Choose the correct verb or conjunction to put into the text. Each word may be used only once.link ... to blame expose ... to testdefeat reject absorb examine severe connect…toIn the twenty-first century, educated people find it difficult to believe that living conditions in the nineteenth century ______ people ___ serious illnesses. The reports of many doctors ____illness ___ drinking polluted water. However, one hundred years ago people did not _____a disease ___ the environment. So they did not _____ the companies that supplied dirty water. The doctors found that the dirtier the water, the more ______ the illness. It was only later when people began to ________ the water and ____ its quality that they _______ the idea that cholera was_________ from the air. It was only when everybody began to attack the dirty conditions that cholera was________ and was not a problem any more.2.Discovering useful structures.1). Look at the following sentences where the past participle is used, and find two more examples in thereading passage.Examples: So many thousands of terrified people died. (Attribute)Doctor John Snow was a well-known doctor in London.John Snow told the astonished people in Broad Street.But he became inspired when he thought about helping ordinary people.(Predicative)He got interested in the two theories.Neither its cause, nor its cure was understood.2). Complete the table with phrases that have the same meaning.3). Complete the sentences using the past participle as the predicative.1.He got ______ about losing the money.2.Why do you always look so ____? Do you sleep well these days?3.I was ___________ with the film I saw last night. I had expected it to be better.4.Everybody was ________________ to hear the death of the famous film star.5.The children are really _______ about going to the zoo.6.His wound became _______with a new virus.4). Rewrite the following sentences with the past participle as attributive.1.Let’s try the bookstore that was opened last month.(Let’s try the bookstore opened last mo nth.)2. Nine out of ten women who were interviewed about the product said they liked it.(Nine out of ten women interviewed about the product said they liked it.)3. Yesterday, the President went to visit the workers who had retired.(Yesterday, the President went to visit the retired workers.)Step four Homework1.Go through the grammar items on p89 and finish Using Structures on p44.2.Finish the exercises about using words and expressions on p42.Period 3 Listening and speakingTeaching goals:1.To learn how to get required information by listening.2.Be familiar with some expressions about describing a person’s qualities.3.Practise communicating with their classmates about their futures realistically.Teaching procedures:Step one Listening:1.Lead in: A brief introduction to Fei Junrong and Nie haisheng, and then lead to the famous scientist QianXueshen.2.Explain some new words which will appear in the listening material--astronomer (天文学家), astronaut (宇航员)institute (研究所)then read the questions and ask the students to guess what this passage may be about.3.Listen to the passage twice, then let the students answer these questions.4.Play the tape once again, and check the answers together.Step two Speaking:In pairs discuss what scientific job each of you would like to choose in the future.1.These questions may help you:What job do you want to do?What education will you need? What personality will be needed?How long will the training take?What work experience would be useful?How will you prepare for this career?2.Theses expressions may help you:I always wanted to.. because…I might find it difficult to …My greatest problem will be to …Theexperience I will need is…I need to practise…I will need to be /become: patient, creative, hard-working, co-operative, confident, brave, positive, pleasant, polite, determined, energetic, strict with…3. Let the students practise it in pairs, then ask some of them to give the report.4. Show the slides of the sample conversation.Sample conversation:A : What do you want to do when you grow up?B: I want to build robots. I will have to do a physics and mathematics degree in China. After that I hope to go abroad to Reading University in England where you can study all about robots. There is a special cybernetics(控制论) department there.A: Why personality will be needed for that job?B: They have a lot of uses: for example, in making cars on a production line or doing other repetitive jobs.A: What personality will be needed for that job?B: I think I need to be patient for my ideas will take a long time to develop. I also need to be creative enough to have good ideas.A: What experience will be most useful to you?B: I think technology and engineering projects. I hope to work in a factory in my holidays.A: What kind of person makes a good inventor?B: I think someone who is happy to persevere at something and learns from his mistakes.A: Thank you. I think designing robots sounds fun.Step three Listening. (p.41)1. Some short introduction to this passage and some new words in it. New words in the listening passage:species (种类)，parrot (鹦鹉) blackbird (乌鸦)2. Read the questions before listening to the tape.3. Listen to it twice.4. Finish the exercises on p41, then check the answers.5. Show the slides of the reading text and listen again if necessary.Step 4 Homework:1. Do the listening task on P44.2.Writing: What I would like to be in the future.Period 4 Reading, writing and learning tipsTeaching goals:1.To learn about Copernicus’ revolutionary theory.2.To learn to write a persuasive essay and improve their integrating skills .Teaching procedures:Step one Pre-readingWe know the first scientist is Copernicus. He was one of the first scientists to use mathematical observations to collect information. He believed the sun is the center of the universe and the earth and other planets went around it. The chart on P.7 shows his theory.Let’s enjoy a video of Copernicus’ Revolutionary Theory.Step two While-reading1 Skimming:Read through the passage fast and try to get the main idea of the passage.2. Scanning:Scan the passage and find the experiences of CopernicusBirth: February 19, 1473Death: May 24, 1543Place of Birth: Toruń, PolandCareer:1491-1494 Studied mathematics at Kraków Academy1496 Went to Italy to study astronomy and law at the University of Bologna1497 Began observations of the Sun, Moon, and planets1514Wrote Commentariolus, an outline of his astronomical ideas, but did not circulate it widely1543Published De Revolutionibus Orbium Coelestium (On the Revolutions of the Celestial)●Read through the passage again, and tell whether the following statements are true or false.1. At Copernicus’ time, Christian Church was in charge of many western countries.2. Copernicus noticed that observed from the earth, some planets appears in front of or behind the earth.3. Copernicus didn’t show his new theory to his friends until he completed it.4. His friends were not interested in his ideas.5. Since he was not afraid of being attacked by the Church, Copernicus published his book as soon as hefinished working on it.6. Newton, Einstein, and Hawking are all scientists who made contribution to the study of the universe.Step three Explain some language points1. Fill in the blankets with proper words.1) Mao Zedong is the great leader of the Chinese R_________.2) The Invention of the computer caused a r________ in our way of living.3) Sun Zhongsan is a great r___________ leader.4) Yuan Longping created a r___________ new way of growing rice.2. lead to: to result in 导致Your carelessness will lead to the trouble in the future.3. make sense1) to have a clear meaningNo matter how I tried to read it, the sentence didn't make sense.2) to be wise course of actionIt makes sense to take care of your health.4. spin--- spun(span)--- spinninge.g. We span the coin to see who would have first turn.I spun around to see who had spoken.5. If you don’t like Tom, you may r_____ his gift.If you don’t think the suggestion is suitable for you, you may r____ it.6. enthusiastic: be interested inShe’s very ______________________ singing.We explain our plan, and he is very___________.enthusiastic enthusiasm enthusiasticallyShe shows boundless __________ for the work.She greeted him _____________ with a kiss.She is very __________ about Eastern music.7. cautious-- cautiously :careful to avoid riskbe cautious about/of sb./sth.e.g. The bank is very cautious about lending money.My father is a very cautious driver.The guard warned me to be cautious about strangers.Step four DiscussionIf you were Nicolaus Copernicus, would you have hidden your theory for so many years? Give a reason. (Suggested answer:As a scientist, Copernicus was more cautious than coward. If he had published his ideas at his time, he would have been killed just as Bruno who was burnt to death because his theory was against the Christian Church’s. Every time when a new idea appears, there are always rejections. It’s normal. Scientists should have patience to spread their truth..)Step five Writing1. Now write a short letter asking Copernicus to publish his ideas so everyone can read them.2. Learning tips.This article is a persuasive writing, which is about changing somebody else’s point of view. When you are doing this kind of writing, you must always have some evidence to support your idea. To make this easier, you can hold discussions with your family and friends. Give your ideas and reasons to them whenever you are making choices. You may argue with them and try to persuade them. Then you will find it easier to do your persuade writing.However, when you are writing, do not forget to plan your work and put your ideas in a logical order.Now please discuss in a group of four and decide how to write this letter. Try to collect your ideas and make a plan. You can read the tips given to you in Ex.3 on page 7.Here is a plan:Beginning: Tell Copernicus who you are and why you want him to publish his ideas.Paragraph 1: Reason 1 and evidence.Paragraph 2: Reason 2 and evidence.Summing up: Ask him to think again about publishing his ideas.3. Sample writingDear Nicolaus Copernicus,I am a student studying astronomy and I would very much like to read your new theory about the solar system. I hope you will publish it for several reasons.I understand the problems with the present theory. The way the planets move is not what you would expect if the earth was the centre of the universe. It is also odd that the brightness of some stars seems to change. So I agree with you that we need a new theory.I know your observations have been very carefully carried out over many years. Now you must have the courage to publish them. Science can never advance unless people have the courage of their beliefs. I know you worry about what will happen if you publish your new theory.No matter how people oppose it, time will show if your ideas are right or wrong.So I hope you will feel you can publish your new theory.Yours sincerely,(your name)Step six Homework1. Write down your persuasive essay on your exercise books.2. Review the whole unit and prepare for the dictation.Period 5 Summing up & AssessmentTeaching goals:1.To know about what they have learned in this unit.2.To check their work and give a self-assessment.Teaching procedures:Step one Revision1. Have a dictation of the words and expression learned in this unit.scientific conclude repeat defeat attend expose control blame immediately announce complete cautious put forward draw a conclusionin addition link…to apart from lead to make sense point of view2. Translate the following sentences(p42)1) 除了公园以外，这个夏天我就没有出过公寓。

高中英语人教版必修5Unit 1 Great scientists教学设计The first period: Warming up and readingImportant points:Let students learn about some great scientists and their contributions.Get students to read the passage and know about John Snow and how he defeated “King Cholera” by using different reading skills.Difficult points:Develop students` reading ability and learn how to organize scientific research.Enable students to talk about great scientists and tell their stories.Step 1 Lead inHave a free talk with students: we have learned about many great people and some famous scientists and now look at the pictures of these great people: Isaac Newton, Albert Einstein, Stephen Hawking, Qian Xuesen, and tell their contributions.Discuss the following question in small groups: what qualities do you think a scientist should have?(persistent, determined, imaginative, careful, creative, clever, strict, patient,…… )Step 2 Warming up1. Ask students to have a discussion in pairs to try this quiz and find out who knows the most.What do you know about great scientists?Step 3 Pre-reading1. Do you know how to prove a new idea in scientific research? Discuss in small groups the stages in setting out a new scientific idea. What order would you put them in?(Suggested answers: find a problem→Make a question→Think of a method→Collect results→Analyze the result→Find supporting evidence→Draw a conclusion)2. What do you know about infectious diseases? What do you know about cholera?(Infectious diseases can spread easily. They may do great harm to people. AIDS and SARS are infectious diseases. They are difficult to cure.)(Cholera(霍乱) infects people`s intestines(肠), causing diarrhea(腹泻), vomiting(呕吐) and leg cramps(腿部痉挛). The most common cause of cholera is that people eat or drink water polluted by the bacteria(细菌). A severe case can lead to death without immediate treatment.)Step 4 Reading1. Skimming: ask students to skim the text and try to find the main idea of the passage as they can.(The main idea: How John Snow collected, analyzed the data and found the cause of the disease and solved it.)2. Scanning: ask them to try to get detailed information and then choose the correct answers after reading the passage.1). John Snow became inspired when _______.A. he became a well-known doctor in LondonB. he attended Queen Victorian to ease the birth of her babiesC. he thought about helping ordinary people exposed to choleraD. he found the cause of cholera and defeated “King Cholera”2). The reason why John Snow used the map in his research was that with its help ______. A. he would notlose his wayB. he could find the houses in Broad Street and Cambridge Street easilyC. he could find out what caused the outbreak of choleraD. he could find out how many people died3). Why did such houses as 20 and 21 Broad Street and Cambridge Street have no deaths? Because ________.A. people there were given free beer and they had not drunk the water from Broad Street pumpB. people there had known that the water was polluted by the dirty water from LondonC. the disease began to slow down in Broad Street and Cambridge StreetD. people in these families were much stronger than those near the Broad Street pump4). The following measures should be taken to prevent cholera except _______.A. always drinking beerB. instructing the water companies not to expose people to polluted water any moreC. examine all water suppliesD. finding new methods of dealing with polluted water.5). What made John Snow find the cause of cholera?A. Queen Victoria`s orderB. his wife`s deathC. Kindness, carefulness and good observationD. Strong determination, patience and selfishness(The answers: CCAAC)3. Intensive reading: ask students to read the passage carefully to get the detailed information and then fill in the chart.4. Answer the questions:1). John Snow believed Idea 2 was right. How did he finally prove it?(He finally proved his idea because he found an outbreak that was clearly related to the Broad Street outbreak, collected information and was able to tie cases outside the area to polluted water.)2). Do you think John Snow would have solved this problem without the map?(No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.)3). Cholera was a 19th century disease. What disease do you think is similar to cholera today? Why?(Three diseases, which are similar today, are SARS, AIDS and bird flu, because they are serious, have unknown causes and need public health care to solve them.)5. Fill in the blanks:How did John Snow finally defeat cholera?As the disease spread quickly, John Snow began to gather information. He marked on a map where all the dead people had lived, analyzed all the evidence and found out the polluted water was the cause. Then he suggested that the source of all drinking water should be examined.根据课文内容填空：Step 5 Post-reading1. Encourage students to fill in the stages of a scientific experiment at the top of each paragraph. Ask students to look at each paragraph and its heading in turn. Get them to write down the evidence or approach John Snow used in that stage to fill in the form.2. Begin a class discussion with students by asking them the following questions:What branch of science are you using to illustrate the stage of an experiment?Did these stages fit your branch of science?Is this an approach used in your science class when you do experiments?What differences are there (if any)?Do you think these differences (if there are any) are important?Do you think this approach would work for all scientific subjects?Step 6 Consolidation1. Ask students to complete the following without referring to the textbook, using the words and phrases from the reading passage.John Snow was a famous doctor in London. There was the most deadly disease called “King Cholera” of its day. Every time there was a(n) outbreak, many people died. John Snow wanted to face the challenge and solvethis problem. He knew that it would never be controlled until its cause was found. At that time, there were two theories about cholera. The first suggested that cholera multiplied in the air. The second suggested that people absorbed this disease into their bodies with their meals. John Snow suspected the second theory was correct but he needed evidence. So he collected data to test the two theories. He marked on a map where all the dead people had lived and the map gave a valuable clue about the cause of the disease. It seemed that the water was to blame. Next, John Snow looked into the source of the water for these streets. He found two other deaths in another part of London that were linked to the Broad Street outbreak. With enough evidence, he announced with certainty that polluted water carried the virus of cholera.2. let students retell the reading passage in their own words.Step 7 HomeworkLearn the useful words and expressions by heart.Read the reading passage again and try to say or write something about how John Snow defeated “King Cholera”.The second period: Learning about language: Important language pointsImportant points:1. Enable students to grasp the usage of such important new words and expressions as conclude, defeat, attend, cure, challenge, suspect, blame, pollute, handle, announce, put forward, draw a conclusion, expose… to, link….to….2. Get students to master the following sentence patterns:So many thousands of terrified people died every time there was an outbreak.It seemed that the water was to blame.To prevent this from happening again, John Snow suggested the source of all the water supplies be examined.Difficult points:Let students learn the usage of the words: attend and blame.Get students to learn and understand some long and difficult sentences.Knowledge aims:Some new words and expressions: characteristic, radium, painter, scientific, conclude, conclusion, analyze, defeat, expert, attend, physician, expose, cure, challenge, victim, absorb, suspect, enquiry, neighbour, severe, pump, foresee, blame, pollute, handle, link, announce, instruct, construct, construction, contribute, put forward,draw a conclusion, expose.. to, link…to, apart fromLet students learn the following important sentence patterns:But he became inspired when he thought about helping ordinary people exposed to cholera. (The past participle as predicative and attribute)Neither its cause nor its cure was understood. (neither ….nor……; subject-verb agreement)So many thousands of terrified people died every time there was an outbreak. (the past participle as the attribute; the adverbial clause introduced by every time)It seemed that the water was to blame. (It seem / seemed that…..; be to blame)….John Snow suggested that the source of all the water supplies be examined. (….suggest that somebody (should) do ……; ….. suggest that something (should) be done….)Step 1 RevisionCheck the workbook exercises.Ask some students to talk something about how John Snow defeated “King Cholera”.Step 2 Reading and finding1. Get students to read through Warming up, Reading and Comprehending to underline all the new words and useful expressions or collocations in these parts.Collocations: know about, find out, lift sth. up by a force, steam engine, physical chararcteristics, be passed from….to…, keep…safe, put forward a theory, black holes, in scientific research, set out, a new scientific idea, draw a conclusion, infectious diseases, a famous doctor, ordinary people, expose…to sth, the deadly disease, neither…nor…, terrified people, every time, solve the problem, become interested in, float around, absorb sth. into, gather information, be determined to do sth., a valuable clue, the water pump, be to blame, look into, the source of water, the astonished people, slow down, link….to…, be liked to, have it delivered, have sth. done, die of, with certainty, polluted water, prevent…from.., be instructed to do sth., be defeated, be similar to, write a short summary ofRead them aloud and copy them down in the exercise book after class. Try to learn them by heart.Step 3 Discussing useful words and expressions1. Turn to page 4. Go through the exercises with students and make sure they know what to do.2. Give them several minutes to finish the exercises and then check the answers with them.Step 4 Studying important language points1. discover: to find or learn about (a place, fact, etc.); find sth. unexpected; come to know or realize sth.I have discovered a supper restaurant near here.Did you ever discover who had been sending you the flowers these days?We have discovered that the young man is a discreet(谨慎的) and economical(节约) fellow.Despite her great age, she was very graceful indeed, but so far, the archaeologists(考古学家) have been unable to discover her identity.Who discovered radium?Who invented the steam engine?In spite of this, many people are confident that the revealer(探测器) may reveal something of value fairly soon.She disclosed that she had been married for a month.2. put forward: to advance; pro; pose or suggest sth. for discussion; to move forward to give the correct timeHe put forward a good plan for this project.Can I put you forward(提名, 推荐) for the golf club secretary?The match has been put forward to 1:30.Put asidePut downPut onPut on weightPut upPut up withPut awayPut offPut on speedPut on a new playPut up a posterPut out3. draw a conclusion:conclusion: the end of something; a belief or an opinion that is the result of reasoningconclude: come to an end; to arrange and settle formally and finallyto conclude a speech: 结束演讲To conclude, I wish you all good health and a long life.The doctor concluded that the patient`s disease was cancer.The judge concluded that the accused was guilty.4. Expert: a person with special knowledge, skill or something in a particular field5. attend: to be present at an event or activity; to look after, care for, serveHe decided to attend the meeting himself.Which doctor is attending you?The work was attended with much difficulty.6. expose: to uncover or make sth. visible; to display; to make known; to revealWhen she smiled, she exposed a set of perfect white teeth.Don`t expose your skin to the sun for too long.They had to be exposed to the enemy`s gunfire.He exposed their plot.The crime of the corrupt officials(贪官污吏) must be exposed without any reserve(保留).7. deadly: causing or likely to cause death; extremely effective; filled with hateDeadly poison / weapons / pale /8: neither…nor…9: control: to have power over; to rule; to directlose control of / be (go) out of controlin control of 控制, 负责under the control ofAll schools are controlled by the Ministry of Education.The driver lost control of his car and it knocked into a tree.The car was out of control and ran into a wall.He was in control of the car.This money is under the control of Mr. Brown.10. absorb: to take in; suck up; hold the attention or interest of sth. fullyA sponge(海绵) absorbs water.Clever children absorb knowledge easily.be absorbed in: 专心于, 全神贯注于The little girl was absorbed in reading a tale.The writer was so absorbed in his writing that he forgot to flick the ashes from his cigar.11. severe: so serious; very harmful or painful; serious or uncomfortablebe severe with: 对…要求严格I think you are too severe on the boy.His severe looks frightened me.He has a severe pain in his leg.He is severe with himself.12. It seems / seemed that …..It seemed that she is lying.It seems that Mary is able to solve the problem.13. be to blame: to be responsible for sth. bad;be + to do sthWho is to blame for the mistake?She was in no way to blame.决不应该责备他.No one is to leave this building without the permission of the police. You are not to drop little in this park. 公园里决不许乱丢垃圾.14. immediately: at once; without delay; the moment that…..; as soon as She came immediately.I came immediately I heard the news.Immediately I saw her I recognized her.15. link…to…: to connect….with…Fingerprints linked the suspect to the crime.The newspapers have linked his name to / with hers.16. announce: to make sth. known publiclyHe announced his decision.It is/ was announced that……It has been announced that he will resign.17. with certainty:I can`t say with any certainty where I shall be next week.18. suggest:I suggested that he should give up smoking.Mary suggested leaving early for the airport.She suggested a picnic at the weekend.19. instruct: to give orders or directionsAfter having been instructed to wait here until the lecturer arrives.She instructed me in the use of the telephone.The boss gave me so many instructions at one time that I got muddled up(使…糊涂).20. apart from: 除….之外(还有); 除…..之外(没有)besides: 除….之外(还有); in addition to: 包括; 除…之外(还有); except for: 除….之外(主语就完美无缺了), 是对主语的修正.What do you study apart from English?Apart from being large, the trousers don not suit me.Besides milk and cheese, we need vegetables.He had considered everything except the weather.I know nothing about it except what I have read in the papers.Your composition is excellent except for some spelling mistakes.Step 5 ConsolidationDo Exercises 1,2,3 and 4 in Discovering Useful words and expressions.Step 6 Closing down by a quizShow the following exercises to students and let them finish in a very short time.1. _____ writing the article, Mrs. Curie even forgot her dinner.A. Absorbed inB. Absorbing atC. Having absorbed byD. to absorb in2. No one has _____ anything better than the plan now under consideration.A. put upB. come upC. put forwardD. come up to3. The mother didn`t know who _____ for the broken glass as it happened while she was out.A. to be blamedB. to blameC. blamedD. was to blame4. Please give me a call ____ you arrive in New York.A. immediatelyB. immediately whenC. the moment whenD. at the moment5. I care for nothing _____ the one you bought for me yesterday.A. in additionB. as well asC. besidesD. apart from6. He ____ the list of names to see that no one had been left out.A. checkedB. examinedC. testedD. observed7. Kevin looked ____ after a day’s hard work. What he wanted most was a good rest.A. exhaustedB. exhaustingC. exhaustD. being exhausted8. All her fans are ____by Jolin’s performance in the live concert.A. inspireB. inspiringC. inspiredD. being spired9. All the students are instructed to remain ___ until all the test papers are collected.A. seatB. seatingC. to be seatingD. seated10. One of the measures ____ is to organize the students to visit other museums.A. takenB. tookC. takingD. has taken11. ____ the new bridge, almost all workers contributed their spare time to it.A. ConstructB. ConstructedC. To constructD. Having constructed.12. There is nothing ____ to do but wait for the teacher to come here.A. leaveB. leavingC. to leaveD. left13. Only when he approached the man ____ it was the same person he quarreled with the other day.A. he realizedB. he did realizeC. realized heD. did he realize14. Nowadays, the prices of many things _____ through the Internet can be lower than store prices.A. are boughtB. boughtC. been boughtD. buying15. The _____ boy is gradually recovering under the care of the kind nurses.A. injuredB. injuringC. injuresD. to be injures16. Who were the guests ____ to your birthday party last night?A. being invitedB. to be invitedC. to inviteD. invited(Suggested answers: ACDAD AACDA CDDBA D)Step 7 HomeworkLearn the new words and expressions by heart.Finish off the homework exercises. Do exercise 3 on page 42 in the exercises book.The third period: Learning about language: GrammarImportant points:Get students to learn and master the new grammar item: The past participle (1) as the attribute and Predicative.Difficult points:Enable students to learn the use of the past participle as the attributive and predicative correctly to the context.Step 1 revisionCheck the homework exercises.Dictate some new words and expressions.Step 2 Lead-in1. Show students the following sentences to read aloud and understand.She is a beautiful young lady.I was angry with him for keeping me waiting so long.Many terrified people rushed out of the hall.He got worried about losing the money.Sally was so excited at the good news.2. Have students do the following.1). Observe each sentence and pick out the attributive or predicative.2). Classify the words that you identify into groups and explain why you divide them into theses groups.Beautiful young angryWorried excited terrified3). Now use a different past participle or an adjective in each sentence to change the mood of the sentence.Step 3 Discovering useful structures1. Ask students to turn to page 2 and read though the passage John Snow defeats “King Cholera”, pick out the sentences where past participles are used as the attributive or predicative, and underline the past participles in each sentence.2. Let students work in pairs to translate these sentences into Chinese and try to understand the usage of the past participles.1). But he became inspired when he thought about helping ordinary people exposed to cholera.2). Neither its cause nor its cure was understood.3). So many thousands of terrified people died every time there was an outbreak.4). He became interested in two theories.5). ….and soon the affected person died.6). He was determined to find out why.7). He found that it came from the river polluted by the dirty water from London.8). He immediately told the astonished people in Broad Street to remove the handle from the pump.9). He found supporting evidence from two other deaths that were linked to the Broad Street outbreak.10). ….that polluted water carried the virus.11). The water companies were instructed not to expose people to polluted water any more.3. Rewrite the following sentences1). Let`s try the bookstore that was opened last month.2). Nine out of ten women who were interviewed about the product said they liked it.3). Yesterday, the president went to visit the workers who had retired .4). The United States is a country which has developed.5). He told us the great wrong which had been done to him.6). We must keep a secret of the thing which is being discussed at the next meeting.7). Please tell me the subjects which will be discussed here.Step 4 Understanding and summarizing1. Ask students to work in pairs to finish the following exercises on how the past participles are used.1). Complete the table with phrases that have the same meaning.2). Complete the sentences using the past participle as the predicative.(1). He got ____ about losing the money.(2). The painter looked so ____ after working for a whole day.(3). I was ____ with the film I saw last night. I had expected it to be better.(4). Everybody was ____ to hear of the death of the famous film star.(5). Everybody is really _____ about the new Olympic stadiums.(6). His wound became _____ with a new virus.(Suggested answers: blamed / upset; tired; disappointed; shocked / depressed; excited; infected)2. Give necessary explanations and some more examples about the usage of the past participle.过去分词做定语和表语的用法过去分词是非谓语动词的一种形式，表示完成和被动的意义。

必修5 Unit 1 Great scientists 教案(新课标版高二英语必修五教案教学设计)Unit 1 Great ScientistsBy Liu ChaoyingThe First PeriodReading一、教学目标（T eaching Aims）Warming up in student’s book and listening in workbook1、能力目标（Ability aim）To activate the students’ knowledge about great scientists in the world and their achievements.To get the students understand the spirit of science.To enable students to communicate with each other and improve students’ langu age expression ability.2、语言目标（Language aim）Words: engine, characteristic, radium, enthusiastic, cautious, spin, In addition, link to, instruct, attend, expose to cure, absorb into severe, to blame, handle from, lead to, make sense, reject.Important sentence:To prevent this from happening again, John Snow supposed that the source of all water supplies be examined and new methods of dealing with polluted water be found.Expressions on making comments二、教学方法（Teaching Method）Communicative approach， Audio－Visual approach三、教具准备（T eaching Aids） Multi-media四、教学步骤（Teaching Procedure）Step I PresentationTalk about famous scientists and the kind of roles they playin history. Present a word match exercise to arouse the students’ interest on the topic.Step II TalkingTry a quiz and see who knows the most about scientists. Discuss in pairs about the significance of some achievements.Step III Group WorkDiscuss in groups about the basic factors that make a scientist successful.Homework1. Oral homework: Prepare a story about a famous scientist and share the story with the whole class.2. Written homework: Write down the story and make comments on the key to success.The Second PeriodExtensive Reading一、教学目标（Teaching Aims）Reading part in students’ book1、能力目标（Ability Aims）To train the students’ ability in skimming & scanning.To adapt the scientific spirit in their pursuit of knowledge.2、知识目标（Knowledge Aims）To lead the students to get some information on the steps ofa scientific research through reading.二、教学重难点（T eaching important points）a. Understand the spirit of science and scientists.b. Understand the details of each stage in examining a new scientific idea.c. Discuss what attitude the scientists should take towards a complete new finding that is against the present theory.三、教学方法（Teaching method）Communicative Approach, Task-based Approach四、教具准备（Teaching Aids） Multi-media五、教学步骤（Teaching Procedures）Step I Pre-readingAsk the students to get ready for reading by discussing about some infectious diseases and the ways of making a scientific research.Step II ReadingLet the students read through the whole passage and finish the required task.Help them to have a better understanding of the article by providing some background information and analysis.Step III Post-readingHold a discussion after reading in order to widen students’ views and further consolidate their knowledge on the topic.Homework: Finish the reading passage in the workbook.The Third PeriodLanguage Points一、教学目标（T eaching Aims）1. 能力目标（Ability aim）Students are required to learn how to guess the meaning of a new word according to the context and use the words and expressions in the first passage on Page 2.2. 语言目标（Language aim）Students are asked to learn about the words and expressions in the first passage on Page 2, including their meanings and the usage in our daily life.Key words expressions:a. attend, expose, cure, control, absorb, severe, valuable, pump, pub, blame, handle, link, in addition, announce, instruct(in Student’s Book)b. expose…to, test, defeat, reject, examine, apart from, contribute to, make a conclusion, make sense, enthusiastic, lead to, be strict with (in Workbook)二、教学重难点（Teaching important points）attend, expose, absorb, handle, in addition三、教学方法（T eaching Method）: Explaining and practicing四、教具准备（T eaching Aids）： Multi-media五、教学步骤（T eaching Procedure）Step I: Leading inAsk questions about the story of John Snow with the words and expressions presented.Step II Word StudyExplain the meanings of the words and phrases and learn how to use them.Step III Word ExercisesHomework:1. Go over the words and phrases students have learned and retell the story about John Snow’s defeating “King Cholera”.2. Choose the suitable words or expressions to complete the passage in the project:valuable, instruct, cure, expose, look into, examine, put forward, immediately, announceThe Fourth PeriodListening一、教学目标（Teaching goals）1.Target language目标语言重点词汇和短语astronomer, astronaut, institute, lily, specialist, sort out, produce, parrot, species, revise, foundation, symbol, analyse,pure, sin, cosin, geometry, calculus, mechanics, practical, topology.2.Ability goals 能力目标Get the students to know more about scientists and science by listening.3.Learning ability goals 学能目标Guide the students to get detailed ideas of listening materialsHelp the students to form good and correct listening habits.二、教学重难点 ( Important and difficult teaching points)a. Listen to materials and grasp the information neededb. The details of the listening materialsc. The new words of the listening materials.d. The unfamiliar subjects of the materials三、教学方法 (Teaching methods)Audio-lingual methodAudio-visual methodTask- based learning approach四、教具准备 (Teaching aide) Multi-media五、教学过程与方式 (Teaching procedures & ways)StepⅠlead-inTask 1: To develop the students predicative skill in listening. Ask students to describe the picture at page 5 and guess what details may be talked and mentioned in the listening.Listening (page 41)Task 1 Describe the picture and stimulate the student’s thinking.Task 2. Help the Ss to master the new words in the listening.species(种类)，parrot(鹦鹉)，blackbird(乌鸦)，Task 3. Enable the students to get a general picture of thelistening and then extract specific information.Listening Task (Page 44)Task1. Introduce the students to the life and work of Leonhard Euler. Help students to gain some knowledge of topology.HomeworkAccording to the listening materials above, access the internet:to get further information.The Fifth PeriodGrammar and Writing一、目标语言(Target language)Using “make + n” and past participlesmake an appointment, make a gossip, make an apology, make a contest, make a choice, unexpected visitors, discouraged students, inspired contestant, crowded streets, struck speeches二、能力目标 (Ability goals Ability goals)Get the students to know how Past Participle used as attributive and predictive is used三、学能目标 (Learning ability goals)Guide the students to get detailed information for the writing四、教学重点 (Teaching important points)Past participle used as attributive and predicative.五、教学难点(Teaching difficult points)To teach students the right steps of writing a composition六、教学方法(Teaching methods)Discussing; task- based learning approach七、教具准备(Teaching aid) Multi-media八、教学过程与方式 (Teaching procedures & ways)Step I: assign the taskGregor Mendel's AchievementsStep II: thinkingNecessary steps in writing a compositionStep III: give an exampleHow to make a plan for your composition?How to draw an outline?HomeworkWrite a report about your scientist, his/her life, achievements and the key to his/her success.。

Unit 1 Great scientistsPeriod 1 Warming up and reading 课时：课型Type of Lesson: Reading学习目标Learning aims:1. To help students learn to describe people2. To help students learn to read a narration about John Snow3. To help students better understand “Great scientists”教学重点Important Points:To help students learn to read a narration about John Snow教学难点Difficult Points:To help students learn to describe people教学反思Teaching Re-thinking:家庭作业Homework:教学过程Teaching Procedures:Warming up 热身Step I Lead in 导入Talk about scientist.T: Hi, morning, class. Nice to see you on this special day, the day when you become a senior two grader. I am happy to be with you helping you with your English. Today we are to read about a certain scientist. But first let’s define the word “scientist”. What is a scientist?A scientist is a person who works in science, trying to understand how the universe or other things work.Scientists can work in different areas of science. Here are some examples: Those that study physics are physicists. Those that study chemistry are chemists. Those that study biology are biologists.Step II 头脑风暴Ask the students to try the quiz and find out who knows the most.T: There are some great scientific achievements that have changed the world. Can you name some of them? What kind of role do they play in the field of science? Do these achievements have anything in common? Match the inventions with their inventors below before you answer all these questions.1.Archimedes, Ancient Greek (287-212 BC), a mathematician.2. Charles Darwin, Britain (1808-1882). The name of the book is Origin of Species.3. Thomas Newcomen, British (1663-1729), an inventor of steam engine.4. Gregor Mendel, Czech, a botanist and geneticist.5. Marie Curie, Polish and French, a chemist and physicist.6. Thomas Edison, American, an inventor.7. Leonardo da Vinci, Italian, an artist.8. Sir Humphry Davy, British, an inventor and chemist.9. Zhang Heng, ancient China, an inventor.10. Stepper Hawking, British, a physicist.II. Pre-reading 预读Step IGet the students to discuss the questions on page 1 with their partners. Then ask the students to report their work. Encourage the students to express their different opinions.1.What do you know about infectious diseases?Infectious diseases can be spread to other people. They have an unknown cause and need public health care to solve them. People may be exposed to infectious disease, so may animals, such as bird flu，AIDS, SARS are infectious diseases. Infectious diseases are difficult to cure.2.What do you know about cholera?Cholera is the illness caused by a bacterium called Vibrio cholerae. It infects people’s intestines(肠), causing diarrhea and leg cramps (抽筋).The most common cause of cholera is by someone eating food ordrinking water that has been contaminated(污染) with the bacteria. Cholera can be mild(不严重的) or even without immediate symptoms(症状), but a severe case can lead to death without immediately treatment.3. Do you know how to prove a new idea in scientific research?Anybody might come out with a new idea. But how do we prove it in scientific research? There are seven stages in examining a new idea in scientific research. And they can be put in the following order. What order would you put the seven in? Just guess.Find a problem→ Make up a question→ Think of a method→ Collect results→Analyse the results→ Draw a conclusion→ Repeat if necessaryUnit 1 Great scientistsPeriod 1 Warming up and reading 课时：课型Type of Lesson: Reading学习目标Learning aims:1. To help students learn to describe people2. To help students learn to read a narration about John Snow3. To help students better understand “Great scientists”教学重点Important Points:To help students learn to read a narration about John Snow教学难点Difficult Points:To help students learn to describe people教学反思Teaching Re-thinking:家庭作业Homework:教学过程Teaching Procedures:III. Reading 阅读Step I Pre-reading 预读1.Do you know John Snow?John Snow is a well-known doctor in the 19th centur y in London and he defeated “King Cholera”.2.Do you know what kind of disease is cholera?It is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat.Let’s get to know how Dr. John Snow defeated “King Cholera” in 1854 in London in this reading passage:Step II Skimming 扫读Read the passage and answer the questions.1.Who defeats “King Cholera“? (John Snow)2.What happened in 1854? (Cholera outbreak hit London.)3.How many people died in 10 days? (500)4.Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street?(These families had not drunk the water from the Broad Street pump.)(Optional)Skim the passage and find the information to complete the form below.Who When What How ResultJohn Snow 1854 helpingordinarypeopleexposed tocholeraExamining the source ofall water supplies andfinding new methods ofdealing with pollutedwaster“King Cholera”defeatedStep III Scanning 找读Read the passage and number these events in the order that they happened.2 John Snow began to test two theories.1 An outbreak of cholera hit London in 1854.4 John Snow marked the deaths on a map.7 He announced that the water carried the disease.3 John Snow investigated two streets where the outbreak was very severe.8 King Cholera was defeated.5 He found that most of the deaths were near a water pump.6 He had the handle removed from the water pump.Step IV Main idea and correct stage 精读Read the passage and put the correct stages into the reading about research into a disease.John Snow Defeats “King Cholera”Paragraph Stages General ideas 1Find a problem:What cause the cholera?The causes of cholera2Make up a question:Which is right?The correct or possible theory3Think of a method:Test two theory Collect data on where people were ill and died and where they got their water4Collect results:Mark the death Plot information on a map to find out where people died or did not die5Analyze the results:Find the resource of the water Look into the water to see if that is the cause of the illness6 Find supporting evidence Find other evidences to confirm his conclusion7Draw a conclusion The polluted dirty source of drinking water wasto blame for the cause of the London choleraStep V Group discussion 分组讨论Answer the questions (Finish exercise 2 on Page 3)1. John Snow believed Idea 2 was right. How did he finally prove it?(John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.)2. Do you think John Snow would have solved this problem without the map?(No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.)3. Cholera is a 19th century disease. What disease do you think is similar to cholera today?(Two diseases, which are similar today, are SARS and AIDS because they are both serious, have an unknown cause and need public health care to solve them.)Step VI 概括总结Using the stages for scientific research and write a summary.Unit 1 Great scientistsPeriod 2&3 Language focus 课时：课型Type of Lesson: Words & Expressions学习目标Learning aims: To help students learn to use some important words and expressions教学重点Important Points: To help students learn to remember some important words and expressions教学难点Difficult Points: To help students learn to use some important words and expressions教学反思Teaching Re-thinking:家庭作业Homework:教学过程Teaching Procedures:Step I Warming up 热身1.characteristic①n. a quality or feature of sth. or someone that is typical of them and easy to recongnize.特征；特性What characteristics distinguish the Americans from the Canadians.② a. very t ypical of a particular thing or of someone’s characer 典型性的，Such bluntness is characteristic of him.Windy days are characteristic of March.[辨析]characteristic与charactercharacteristic是可数名词，意为“与众不同的特征“character表示（个人、集体、民族特有的）“性格、品质”，还意为“人物；文字”What you know about him isn’t his real character.2. put forward: to state an idea or opinion, or to suggest a plan or person, for other people toconsider提出He put forward a new theory.The foreigners have put forward a proposal for a joint venture.An interesting suggestion for measuring the atmosphere around Mars has been put forward.☆ put on穿上;戴上;增加put out熄灭(灯);扑灭(火) put up with…忍受put down写下来;放下；put off 耽误; 延期put up建立; 建造,put up举起，搭建，粘贴3. analyze: to examine or think about something carefully in order to understand it vt.分析结果、检讨、细察A computer analyses the photographs sent by the satellite.The earthquake expert tried to analyze the cause of the earthquake occurred on May 12,2008.Let’s analyze the problem and see what went wrong.He analyzed the food and found that it contained poison.We must try to analyze the causes of the strike.☆ analysis n.分析，解析，分解4. conclude: decide that sth. is true after considering al the information you have 得出结论；推论出to end sth. such as a meeting or speech by doing or saying one final thing vt. & vi结束，终止；We concluded the meeting at 8 o’clock with a prayer.From his appearance we may safely conclude that he is a heavy smoker.What do you conclude from these facts?We conclude to go out / that we would go out.conclusion n.结论arrive at a conclusion; come to a conclusion; draw a conclusion; reach a conclusionWhat conclusion did you come to / reach / draw / arrive at?From these facts we can draw some conclusions about how the pyramids were built.Step 2 Reading1. defeat① vt. to win a victory over someone in a war, competition, game etc.打败，战胜，使受挫I’ve tried to solve the problem, but it defeats me!Our team defeated theirs in the game.② n.失败，输failure to win or succeedThis means admitting defeat.They have got six victories and two defeats.[辨析]win, beat与defeat①win “赢得”赛事、战事、某物；后接人时，意为“争取赢得…的好感或支持；说服”②beat “战胜”“击败”比赛中的对手，可与defeat互换We beat / defeated their team by 10 scores.They won the battle but lost many men.The local ball team won the state championship by beating / defeating all the other teams.I can easily beat /defeat him at golf.He is training hard to win the race and realize his dream of becoming a champion at the 2008 Olympic Games.2. expert①n. someone who has a special skill or special knowledge of a subject专家，能手an expert in psychology an agricultural expert② a. having special skill or special knowledge of a subject熟练的，有专门技术的an expert rider an expert job需专门知识的工作He is expert in / at cooking.3. attend vt. &vi 参加，注意，照料① be present at参加attend a ceremony / lecture / a movie / school / class / a meetingI shall be attending the meeting.Please let me know if you are unable to attend the conference.② attend to (on): to look after, care for, serve伺候, 照顾，看护The queen had a good doctor attending on her.Dr Smith attended her in hospital. 治疗Are you being attended to?接待Mother had to attend to her sick son.③ attend to处理，注意倾听attend to the matterA nurse attends to his needs.Can you attend to the matter immediately?I may be late – I have got one or two things to attend to.Excuse me, but I have an urgent matter to attend to.[辨析]attend, join, join in与take part in①attend指参加会议、上课、上学、听报告等②join 指加入某组织、团体，成为其中一员③join in指加入某种活动；表示与某人一起做某事join sb. in sth.④take part in指参加正式的、有组织的活动，切在活动中起积极作用Only 2 people attended the meeting.He joined the Communist Youth League in 2007.Will you join us in the game?We often tale part in the after-class activities.Unit 1 Great scientistsPeriod 2&3 Language focus 课时：课型Type of Lesson: Words & Expressions学习目标Learning aims: To help students learn to use some important words and expressions教学重点Important Points:To help students learn to remember some important words and expressions 教学难点Difficult Points:To help students learn to use some important words and expressions教学反思Teaching Re-thinking:家庭作业Homework:教学过程Teaching Procedures:4. expose : to show sth. that is usually covered暴露expose sth. to the light of day 把某事暴露于光天化日之下I threatened to expose him ( to the police). 我威胁要(向警察)揭发他.He exposed his skin to the sun.他把皮肤暴露在阳光下.The old man was left exposed to wind and rain.When he smiled he exposed a set of perfect white teeth.5. cure vt. & n. to make someone who is ill well agian治疗,痊愈When I left the hospital I was completely cured.①cure sb of a diseaseWhen you have a pain in your shoulders, you will go to see a doctor. The doctor will cure you.The only way to cure backache is to rest.He will cure the pain in your shouldersWhen I left the hospital I was completely cured.The illness cannot be cured easily.Although the boy was beyond cure, his parents tried to cure him of bad habits.②a cure for a diseaseAspirin is said to be a wonderful cure for the pain.There is still no cure for the common cold.Is there a certain cure for cancer yet?③a cure for sth.: to remove a problem, or improve a bad situation解决问题，改善困境The prices are going up every day, but there is no cure for rising prices.[辨析]cure与treat①cure主要指痊愈，强调的是结果②treat强调治疗过程，指通过药物、特别的食品或运动治疗病人或疾病，不强调结果。

高二英语必修五《Unit 1 Great scientists》教案【导语】增加内驱力，从思想上重视高二，从心理上强化高二，使战胜高考的这个关键环节过硬起来，是“志存高远”这四个字在高二年级的全部解释。

高二频道为正在拼搏的你整理了《高二英语必修五《Unit 1 Great scientists》教案》希望你喜欢！教案【一】教学准备教学目标1.Students learn some new words and expressions to describe people ,especially famous persons;2.Students are encouraged to give more information about famous persons who they are familiar:3. Students can realize that it is scientific spirit that makes those scientists successful.教学重难点1. Words and expressions in this unit2. Previous knowledge of some of the famous scientists3. Comprehending the text教学过程【导入】Words learning(Students are assigned to learn the new words of this unit and find out the English explainations of the new words ) Definitions or explanationsA.examine 1.general principles of an art or scienceB.repeat 2.say or do againC.theory 3.at once; without delayD.immediate 4.look at...carefully in order to learn about or from...plete 5.of great value, worth or useF.valuable 6.having all its parts; whole; finishedG.announce 7.make knownH.control e or bring to an endI.positive 9.power to order or directJ.conclude 10.quite certain or sure【讲授】useful sentences learning(The sentences are picked from the text.)1.“All roads lead to Rome, ”he encouraged me after I failed the entrance examination.2.This sentence doesn’t make any sense.3.Our English teacher is not only strict with us but also friendly to us.4.He is good-looking, apart from his nose.5.It is announced that the spacecraft, Shenzhou Ⅵ, landed on the earth successfully.6.It is not Tom but you who are to blame.7.In 1995, the Chinese government put forward a plan for“rejuvenating the nation by relying on science and education”.And it has helped Chinese scientists make many breakthroughs.8.Have you drawn any conclusion after you read this passage?9.Well done.So much for the learning of the new words and expressions.【讲授】Introduction of a classic articleTeacher introduce a famous person --Qian Xuesen and students learn to write an article about the famous scientis using the words and expressions they just learn in class.【活动】Share the outcomeStudents share their article orally and discuss whether they have used some good and advanced expressions.【练习】Consolidation完成句子(1)爱因斯坦被认为是二十世纪最伟大的科学家之一。

教学设计1 ．通过观看视屏和情感铺垫导入，激发学生对于科学家的尊重并了解他们的工作的意义。

2 ．反复品读课文，并提取重要信息是学生逐步深入理解课文，教师在点拨时授以学法指导。

3 ．设置具体情境，使学生们将所学知识应用于实践。

教学过程教学环节（注明每个环节预设的时间）教师活动学生活动设计意图情境导入3 分钟导入：教师播放视频并提醒学生注意两个问题：1. What is the news about? ( 新闻的主题是什么)2. How many people are reported tohave died in the news? ( 多少人死亡？)视频结束学生回答问题并想象如果埃博拉没有被有效地控制，现在将会怎样。

观看视频，回答问题并想象会发生什么事情。

通过学生们熟悉的就发生在现在的疾病为下文学生了解霍乱奠定基础；通过想象疾病的可怕后果从而进一步让学生体会科学家及其工作的重要性。

初步了解霍乱1 分钟介绍霍乱基本信息：症状、致命性。

阅读基本信息。

为学生阅读下面的文章做准备。

浏览课文8 分钟一、学生迅速浏览课文并选出课文的主旨大意二、将事件按照发生的顺序重新排列阅读课文并回答问题，在第一个问题当中还要思考为什么其他选项不能概括初步了解文章并学会概括文章的主题。

文章的主旨大意。

细读课文15 分钟就文章的细节进行提问： 1. Why didcholera cause so many deaths?( 为什么霍乱是很多人丧生？)2. What were the two theoriesexplaining the disease? ( 关于霍乱的两个理论是什么？)3. What did he do to defeat thedisease? （John Snow 为打败霍乱所做的事情是什么？）在回答问题过程中概括出John Snow 所使用的科学分析法的具体步骤。

详细阅读课文并找出相关答案，通过John Snow 所做的事情概括他所使用的科学分析法。