北师大版模块7 Unit 20 Lesson 3

Unit 20 Lesson 3 Scientific BreakthroughsTeaching aims1.words and phrases：nguage points in the text3.reading strategies4.exercises about text5.vocabulary:phrasal verbs and compound wordsTeaching timeTwo periods(两课时连堂)Teaching processStep 1 RevisionReview the new words of lesson 2 and have a dictionStep 2 learn the new words of lesson 31.ask some students to read the new words first and correct their pronunciation2.play the tape and have them read after the tape3.give them a few m inutes to read the new words freely, tell them if they can’t read the words, encourage them to ask the teacher .step 3 reading1.discuss the pictures and talk about the scientists’ major discoveries.2.do exercise 2 by themselves.3.let the students look at Reading Strategies and check their answers to exercise 1 and 2.4.play the tape twice, and do exercise 4.step 4 language points1.think over v.仔细考虑, 重新考虑2.be aware of v.知道, 意识到eg: Everybody is aware of the importance of study.每个人都意识到了学习的重要性。

Period Three Lesson 3 Scientific BreakthroughsⅠ.单词自测1．procedure n．步骤；程序2．donate vt.捐赠；赠送3．correspond vi.通信；符合4．meanwhile adv.同时5．split vi.分离，分开6．premier adj.最重要的；n.总理7．outspoken adj.直言的，坦率的8．outcome n．后果，结果9．cure vt.治愈10．wrestle vi.努力解决；摔跤；搏斗11．patent n．专利Ⅱ.短语自测1．range_from...to...在某范围内变化2．replace...with...用……代替……3．figure_out计算出4．be_thought_to_be被认为是……5．turn_to_sb.向某人求助6．wrestle_with_sth.努力解决难以处理的事物7．be_dedicated_to献身于；专注于8．by_mistake错误地；由于差错9．be_grateful_for感谢……，对……心存感谢10．experiment_with试验……，试用……1．In the summer of 1905，this outspoken young man was_rocking his one－year－old baby when he was suddenly inspired.1905年的夏天，这位直率的年轻人正摇着他一岁大的孩子，这时他突然产生了灵感。

2．Einstein had already become world－famous when a young ex－lawyer，returning_from_the_First_World_War，started work in California.从一战中转战回来，曾经担任过律师的年轻人在加利福尼亚开始工作时，爱因斯坦已经举世闻名了。

北师大版第7模块第20单元第3课课文短语句型荟萃2014-4-121. PIONEERS OF SCIENCE科学先锋Paragraph 12. If you had to choose the single most important discovery of the 20th century, you would have a real dilemma on your hands.如果要选择20世纪最重要的发现，你将会面对一个真正的难题。

3. not to mention更不用提4. Medical advances ranged from discovering the causes of diseases under microscopes to surgical procedures replacing diseased organs with donated ones.医学的进步包括从在显微镜下发现疾病的起因到用捐赠器官替代病变器官这样的外科手术过程。

5. The way we correspond went from writing letters to emailing. 我们通信的方式从写信变成发电子邮件。

6. We started flying around the world and meanwhile, scientists figured out how to split the atom, previously thought to be the smallest particle of matter in the universe. 我们开始在世界各地飞行，同时，科学家们发现怎样分裂原子，而原子以前被认为是宇宙中最小的物质颗粒。

Paragraph 27. single out a few pioneers of the 20th century选出20世纪的一些科学先锋Paragraph 38. One of the 20th century's premier scientists was Albert Einstein. 20世纪最重要的科学家之一是阿尔伯特·爱因斯坦。

课时作业9Lesson 3Scientific BreakthroughsⅠ.单词拼写1．He was in a________(困境) where he couldn't decide whether to accept or refuse the gift.2．You'd better________(捐赠) some food and money to the poor children.3．I often________(通信) with my old friends.4．Mr Green is watering flowers.________(与此同时)，Mrs Green is cooking breakfast.5．The band________(分离) up in the 1970s.6．He is an________(坦率的) man.7．The________(薄雾) was floating over the mountain.8．The man was________(治愈) of his heart attack.9．He applied for a________(专利)．10．The________(结果) of the election was announced yesterday.★答案★1．dilemma 2.donate 3.correspond 4.Meanwhile5．split 6.outspoken7.mist8.cured9.patent10．outcomeⅡ.用适当的介、副词填空1．The audience ranged from adults________children.2．Mr white corresponded________his wife once in a while.3．Have you figured________this problem?4．The tough man wrestled________the snowstorm.5．Her father was dedicated________finding a way out.6．He took away my basket________mistake.7．The excellent players were singled________to compete in the game.8．There is no doubt________his honesty and kindness.9．He is fond of participating ________the voluntary work.10．He based his opinion________facts.★答案★与解析1．to range from...to 从……到……范围变化。

Unit 20 New Frontiers学习方针：By the end of this class, you will be able toTo use reading strategies for identifying accurate information.To learn about some scientific breakthroughs and the scientists.学习过程一、预习交流donate v. ____________ procedure n. ____________ microscope n. ____________correspond v. ____________ organ n. ___________ microwave n. ____________split v. ____________ telescope n. ___________ circuit n. ____________cure v ____________ mist n. ___________ patent n. ____________wrestle v. ____________ mould n. __________ outcome n. ____________dilemma n. ____________ penicillin n. ___________ circuit n. ____________navy n. ___________ outcome n. ___________ jet n. ___________二. 合作探究Fast reading: get the main idea1．The purpose of this article is _______.the introduction of Albert Einsteinthe introduction of the process of scientific breakthroughintrod uction of the major scientific discoveries in the 20th centurythe contributions scientists made to the worldWrite down the key words or sentences that you think are important._________________________________________________________________.三. 分层提高3. Careful reading: get specific informationTime Name Discovery How to discover Influence1905 Changeunderstanding ofuniverseFirst WorldWar1929 by accident1946Not mentioned_____with 120patents(2) Fill in the blanks1. One of the 20th century’s p_____ scientists was Einstein who was i____ to d____ E=mc2 w hich showed how an u_____ amount of energy was produced.2. Scientists f____ ___ how to split the atom and ch anged the way we c______ from writing letters to emailing.3. The o____ of penicillin is a_____, which helped to c____ people.4. It is a real d_____ on your hands to choose the most important discover y of the 20th century. Scientific b_____ improve the quality of human life on earth.Can you fin d some words in the text that express the same ideas? For examp le, discover and figure out.(4) Find words in the text with the following meanings:1. to give something e.g. money, to a person or an organization in order to help them2. a part of the body, such as heart or lungs3. to divide something into separate parts4. compar e two things that are happening at the same time5. expressing your opinions honestly6. one of the large groups of stars that make up the universe7. to make someone who is ill well again8.a type of oven that cooks food very quicklyWrite down the difference between False and IN.________________________.4. After reading四. 总结归纳Cloze test of the textAlbert Einstein was suddenly________ when he was rocking his baby. He then showed in his “_________________”that not even time, ______ or ______ are _______---they change according to _______________ of them.Edwin Hubble used the most _____________ telescope of the time and began the long, slow process of _________________. He discovered small areas of _____ which proved that the ________was larger than _________________________Alexander Fleming saw a strange blue mould in the dish around which____________________________. This blue mould was in fact the ____________________.In the 20th century, amazing discoveries were made in ____________________________________. Without the ____________ of these ___________________________, whether lucky or planned, the world as we know it today would _________________________________.(1) Retell the textNouns Verbs AdjsE=mc2,theory of relativity telescope, galaxy, Penicillin, bacteria, machine, missile, energy, microwave Inspire, explore, discover, notice, realize, destroy, save, cure, measure, dedicate, affect, breakthrough world-famous, outspoken, unbelievable, far-reaching, mass-produced, first, huge, grateful(2) Interview: Write down your dialogue and finish the following sentences. Preparation for the interview5. Compound Wordswarm-hearted …形容词+名词+-edearthshaking …名词+现在分词man-made …名词+过去分词homesick …名词+形容词breakthrough …动词+副词snowfall …名词+动词pickpocket …动词+名词upgrade …副词+名词highway …形容词+名词classroom …名词+名词四. 总结归纳7. Cloze test of the textAlbert Einstein was suddenly________ when he was rocking his baby. He then showed in his “_________________” that not even time, ______ or ______ are _______---they change according to _______________ of them.Edwin Hubble used the most _____________ telescope of the time and began the lo ng, slow process of _________________. He discovered small areas of _____ which proved that the ________was larger than _________________________Alexander Fle ming saw a strange blue mould in the dish around which____________________________. This blue mould was in fact the ____________________.In the 20th century, amazing discoveries were made in ____________________________________. Without the ____________ of these ___________________________, whether lucky or planned, the world as we know it today would _________________________________.。