高中英语导学案与练习Unit 4 Global warming知识讲解 Unit 4 Global warming 语言点

Unit4 Global Warming【自主预习】一.(易词扫描)1.消费，耗尽_______________2.结果,后果_________________3.胡乱的_______________4.现象__________________5.燃料______________6. 趋向；易于________________7.每，每一________________ 8.资料，数据_______________ 9.趋势,走向n.________ 10.洪水________________ 11.温和的，淡的_______________▲短语必会:1.发生；造成_________2.同意；赞成；订购___________3.大量的____________2.4.上升；增长；升起____________ 5.导致______________ 6.反对_____________【问题探究】(根据例句，探究用法)e about 常用于疑问句或否定句中。

How did these differences come about?How did it come about that the sculptures appealed to you?比较：1) Tell me how the car accident came about. 2) Did you hear what happened to her?3) Great changes have taken place in our city in the last few years.4) A fire broke out during the night.总结：come about≈happen尤指未能预见的事情的偶然发生。

take place______________ break out 指____________的突然发生爆发。

这些短语的共同点：_______________ 练习：It’s already 10:00. I wonder how it ___ that she was two hours late on such a short trip.A. came overB. came aboutC. come aboutD. came up2. quantity Changing in quantity leads to changing in quality.1) Quantities of food /books were sent to the earthquake area.2) A large quantity of food/ books was/were sent to the earthquake area.总结：a quantity of 可接_____和_______，作主语时谓语动词的数以___________而定。

Unit 4 Global warmingKnowledge and skills1．To know the meanings of the following new words and phrases：2．To learn about some facts and views about global warming.3．To learn how the information is organized.4．To develop the students' reading ability by skimming and scanning the passage.5．To develop the students' speaking ability by talking about global warming.Process and methods1．While doing Warming Up the teacher can lead in the topic of this unit by showing students some pictures or videos about sources of energy，making the students recall their own knowledge about energy.2．During Pre－reading the teacher can go around the classroom and discuss the questions with several students.This discussion should be student－centered and lead them to the topic of global warming.The teacher should also ask the students to look at the graphs in the reading passage and try to find out the general idea of the text.3．While doing Reading and Comprehending，the teacher may first ask the students to read the text quickly to get the general idea of each paragraph.After reading the passage，students are encouraged to answer some questions and discuss the text structure.4．To consolidate the contents of the reading passage，the students should be required to retell the text in their own words at the end of the class.Emotion，attitude and value1．To make students realize the harm of global warming and the importance of environmental protection.2．To develop students' sense of cooperative learning.教学重、难点1．To enable the students to learn about global warming and to develop their reading ability.2．To enable the students to talk about what we should do to prevent global warming.教学过程Step 1 Lead-in1．Show some pictures to students and ask them what is to blame for these frequent disasters in 2011 .Step 2Reading and comprehending1．Fast readingAsk students to read the passage aloud to the tape so as to get the key words and general idea of each paragraph and answer the following questions：(1)What is the main topic of the article?________________________________________________________________________(2)Who wrote the magazine article？What is the name of the magazine?________________________________________________________________________(3)What are the names of the three scientists mentioned in the article？Do they agree with one another?________________________________________________________________________(4)What is global warming?Suggested answers：(1)Global warming/the warming of the earth.(2)Sophie Armstrong，Earth Care.(3)Dr Janice Foster，Charles Keeling，George Hambley.They don't agree with each other.(4)The earth is becoming warmer.2．Detailed reading(1)Read the passage carefully and judge whether the statements are true(T) or false(F)．①The temperature last century didn’t increase much.②Everyone believes that global warming is caused by the activities of humans.③Janice Foster believes that she can measure the future global rise in temperature.④The rise in carbon dioxide is causing a steady increase in global warming.⑤George Hambley believes scientists are just guessing about the effects of global warming.⑥It is clear what the effects of global warming will be.(Suggested answers：TTFTTF)3．Structure analyzingAsk students to read the text carefully and try to find out how many parts they can divide the4.Careful readingAsk students to read the text carefully and answer the questions:(1)What are the names of the three scientists mentioned in the article?(2)What do they think about global warming? Do they agree with one another?(3)What are the two graphs about?Step 3DiscussionAsk students to talk about global warming in their own words. Then let them try to answer the question what can we do to control the greenhouse effect.。

Book6 Unit4 Global warming 导学案（Period One: Reading）课前案Skim the text and finish the following information.1.What’s the main topic of the passage?The main topic of the passage is about .2.Who wrote the magazine article? What is the name of the magazine?wrote the magazine article; the name of the magazine is .3.What are the names of the three scientists mentioned in the article?The names of the three scientists mentioned in the article are , , and .Do they agree with one another? .4.The passage can be divided into three sections, match them with the main idea of each section.Part1.(1) A. How global warming comes aboutPart2. (2-5) B. List two different attitudes towards global warmingPart3. (6) C. Introduction of global warmingPart4. (7) D. Whether people should do something about global warming课中案学习目标:1.To learn some important words and phrases about global warming.2.To develop the reading skills by skimming and scanning the passage.3.To strengthen the awareness of environment protection .Step 1 Fast readingRead the text quickly and choose the best answers.1. How much did the temperature rise in the 1900s?A．One degree Fahrenheit. B．One Celsius.C．Two degrees. D．Thirty degrees Celsius.2.What causes the earth’s temperature increasing?A. Cutting treesB. Wasting the farmland.C. Running out of the river waterD. Burning fossil fuels.3.Which of the following is Dr. Janice F oster’s opinion?A. The result of the temperature increase will be serious.B. The amount of warming is nothing serious.C. We needn’t worry about high levels of carbon dioxide.D. Global warming is a natural phenomenon.4.According to George Hambley, .A. Global warming is a serious problem.B. There is no need to worry about global warming.C. The levels of CO2 in the air will become lower in the future.D. More animals will make greenhouse gases decrease.5. We can infer from the text that __________.A. the debate about the effects of global warming has not been settled.B. the greenhouse effect is the result of people’s actions.C. all scientists think it is important to reduce the amount of CO2 in the atmosphere.D. reducing greenhouse gases will immediately decrease the earth’s temperature. Step2 Careful reading Read Para.2 to Para.6 and fill in the blanks.(Para.2-Para.3)The reasons for global warminggreenhouse gases(Para.4-Para.5)The levels of carbon dioxide have increased greatly over the last . According to Dr.Charles Keeling, from to , the amount in the atmosphere wentup from around parts to around parts per millionDr.Janice Foster believes over the next century ,the amount of warming could be as lowas degrees Celsius, but it could also be as high as degrees.(Para.6)Different opinions about global warming.Dr. Foster(a catastrophe)George Hambley(a positive thing)1.a rise in2.severe storms, __________,__________, famines3.the spread of4.the disappearance of1.Plants will2.Crops will3.There will be a greater rangeofStep3 Further reading True or False（）1.The temperature in the last century seemed to increase much.（）2. Everyone believes that global warming is caused by the activities of humans.（）3. The rise in carbon dioxide is causing a steady increase in global warming.（）4. George Hambley believes that global warming will do good rather than harm to the earth.（）5. It is clear what the effects of global warming will be.Step 4 Fill in the blanks to retell the passage.The temperature of the earth 1 (rise) about one degree during the 20th century. How has this come 2 ? All scientists subscribe 3 the view that it is human activity 4 has caused the 5 (globe) warming rather 6 a random but natural phenomenon. Some scientists think we add large 7 (quantity) of carbon dioxide to the air. Some scientists believe the burning of more and more fossil fuels 8 (have) resulted in the increase of carbon dioxide. Greenhouse gases continue to build 9 . It may be a catastrophe but George 10 (state) that it is a positive thing.Step 5 Free talk — a short speech 能力提升Between the two opinions ,decide on one to have a discussion in you group and then choose a speaker to give a speech on behalf of your group. The following information may help you.Step 6 Summary课后案I.课外延伸阅读Further reading about global WarmingGlobal warming is the unusually rapid increase in Earth’s average surface temperature ove century primarily due to the greenhouse gases released as people burn fossil fuels. The global averagesurface temperature rose 0.6 to 0.9 degrees Celsius (1.1 to 1.6°F) between 1906 and 2005, and the rate of temperature increase has nearly doubled in the last 50 years. Temperatures are certain to go up further.Earth’s natural greenhouse effect Earth’s temperature begins with the Sun. Roughly 30 percent ofincoming sunlight is reflected back into space by bright surfaces like clouds and ice. Of the remaining 70percent, most is absorbed by the land and ocean, and the rest is absorbed by the atmosphere. The absorbedsolar energy heats our planet. As the rocks, the air, and the seas warm, they radiate “infrared radiation). From the surface, this energy travels into the atmosphere where much of it is absorbedby water vapor and long-lived greenhouse gases such as carbon dioxide and methane. When they absorbthe energy radiating from Earth’s surface, microscopic water or greenhouse gas molecules turn into tiny heaters— like the bricks in a fireplace, they radiate heat even after the fire goes out. They radiate in alldirections. The energy that radiates back toward Earth heats both the lower atmosphere and the surface,enhancing the heating they get from direct sunlight. This absorption and radiation of heat by the atmosphere—the natural greenhouse effect—is beneficial for life on Earth. If there were no greenhouseeffect, the Earth’saverage surface temperature would be a very chilly -18°C (0°F) instead of the comfortable 15°C (59°F) that it is today.What has scientists concerned now is that over the past 250 years, humans have been artificiallyraising the concentration of greenhouse gases in the atmosphere at an ever-increasing rate, mostly byburning fossil fuels, but also from cutting down carbon-absorbing forests. Since the Industrial Revolutionbegan in about 1750, carbon dioxide levels have increased nearly 38 percent as of 2009 and methanelevels have increased 148 percent.II.拓展提高书面表达如何解决全球变暖是我们全人类共同面临的一个难题。

Unit 4 Global warming1. 教材分析本单元以Global warming 为主线，旨在通过单元教学使学生经过思考、学习，认识到全球变暖的起因和它所带来的种种后果。

同时鼓励学生进一步阐述地球所面临的其它严重问题，激发学生的环保意识。

引导学生运用所学语言、句式表达自己对这些现象的看法，培养他们为自己的观点辩论的能力，并能运用所学知识写一篇有关环境问题的论文。

1.1 Warming Up通过直观的图片，使学生对能源的用途和种类有一个基本的了解。

让学生对当今人们开发和使用能源以及随之而来的种种影响有更深一步的思考和认识，从而为本单元主题Global warming 作了很好的铺垫。

1.2 Pre-reading是Reading的热身活动。

通过组织学生对这些问题的讨论、回答，激活他们头脑中相关的内容模式，为下一步阅读做好准备。

由于Global warming 是当今世界的一个热门话题，学生已从多种渠道对此有了很多的了解，因此教师可以在安排预习作业时让学生分组做 a project on global warming , 这样既符合了新课程的要求——体现学生的主体地位，激发学生自主学习的热情，又能得到很好的教学效果。

1.3 Reading是一篇从杂志节选的文章。

它讲述了全球加速变暖的原因——人为温室效应，后果以及人们对此的不同观点。

要求学生在理解文章大意的同时注意它的写作技巧：提出问题——分析现象——阐述各方面的不同观点——以疑问句作为总结引发读者深思，自行做出判断。

这为Comprehending 中Exercise 3的分组辩论活动留出了很大的空间，埋下了很好的伏笔。

1.4 Comprehending 包含了三大部分。

前两个部分中设计了诸多细节性的问题，旨在检测学生定位、理解细节及对文章大意的总结归纳的能力。

最后一项要求学生在读完整篇文章后，仔细思考并树立自己的观点：“We should do nothing about global warming”还是“We should do something to decrease the speed of global warming”，并利用所学知识进行分组辩论。

Unit 4 Global warming导学案4【学习目标】(1)掌握skimming和scanning两种阅读方法(2)通过学习,掌握和运用课文中的7种句型句式【重点难点】What are the effect of global warming?【学习内容】一．Fast reading:Part 1: Divide the passage into four parts and write down the main idea of each part? Paragraph ________: The background of this article.Paragraph ________: Explanation about how global warming comes about. Paragraph ________: Two different attitudes among scientists towards global warming. Paragraph ________: Two choices of dealing with this problem.Part 2: Read the text again and choose the best answer.1. How much did the temperature rise in the 1900s?A. One degree FahrenheitB. One CelsiusC. Two degreesD. Thirty degrees Celsius2. What causes the earth’s temperature increasing?A. Cutting treesB. Wasting the farmlandC. Running out of the river waterD. Burning fossil fuels3. According to George Hambley, ______________.A. Global warming is a serious problem.B. There is no need to worry about Global warmingC. The levels of carbon dioxide in the air will become lower in the futureD. More animals will make greenhouse gases decrease.Part 3: Read the text again and write down the best answer.1. Who wrote the article? What’s the name of the magazine?2. What are the names of the three scientists mentioned in the article?3. What are the attitudes of scientists about global warming?4. What are the two graphs about?二．Careful reading:Part 4:Three scientists and their ideas about global warmingName Ideas about global warmingDr. Janice Foster 1)Carbon dioxide has caused the global temperature to __________.2)An increase of five degrees would be a _________ and could be very _____________. Charles Keeling The carbon dioxide content of the atmosphere went up from 315 parts to around __________ parts per million.George Hambley More carbon dioxide is a ________________ thing, which makes crops __________more and will encourage a greater __________ of animalsPart 5:What are the effect of global warming?(1) negative effectthe sea level to rise _________________________floods _________________________faminesthe spread of disease __________________________(2) positive effectMake plants grow faster ___________________________________________________三．词组Read the text once again and write down important phrases._______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ ____________________________用上面短语填空：1. 他不赞同我的建议。

Unit4Globalwarming导学案Period 1 Vocabulary2012级英语组主编陈金审核薛向华【学习目标】知识与能力：利用构词法背诵单词，掌握重点单词的用法过程与方法：兴趣记忆法、形义联想法、利用词根词缀法、最佳时间记忆法等，师生互动情感态度价值观：在学习新单词的过程中,教育学生关注地球气候。

【词汇学习】▲Reading words查字典，了解词汇的词性变化，并写出正确形式。

1.消费；消耗；vt.________ n. 消费者___________2.现象______________ 复数形式(pl) ________________3.量；数量n __________ 大量的________________4.反对vt._________ 反对的adj ___________ 反对…（短语）_______________5.结果n.______________ adj. ____________ adv._______________6.陈述，说明vt._________ 情形n_____________ 陈述n._______________7.平稳的adj.____________ adv.____________8.趋向；vi._________ 照顾，护理vt.___________ 倾向；趋势n __________9.平均的adj._________10. 污染n. __________ vt.______________11. 增长n. ____________ vt._____________12. 教育工作者n._____________ 教育vt.____________13.贡献n. ________________ v. _______________14.显示；演出n._____________ 提出，介绍vt. ___________15. 分歧；不一致n.____________ 一致，同意n _________ 同意vi_________16. 生存；存在n.___________ v.___________【巩固运用】1. He prefers q_____________ （质量）to quality when food is concerned.2. The d _______（数据）we have collected are not enough to be convincing.3. Everything was in a s_______ of disorder.4. What is the a______________ （平均）rainfall for August in your country?5. We have been having a few a _____________ （一致）in the committee lately.6. They were p_________________ （现象）in the history of music.7. As a c_________________ （结果）of being in hospital, Shelly decided that she wanted to become a nurse.Period 2 Warming up and Reading2012级英语组主编陈金审核裴学铖【学习目标】知识与能力：学习本单元重点单词短语；过程与方法：阅读为主；增加词汇量；提前预习，小组讨论解决问题情感态度价值观：清醒认识“全球变暖”的事实，使其树立节约能源、保护环境的意识。

Unit 4 Global warming warming up and readin g导学案主备：孙方岩审核：甘忠清陶兰鲁宏杰Learning aims:1.Enable the students to talk about global warming.2.Help the students learn how to talk about the causes and effects of global warming and express ideas about what people should do about it.Teaching procedures:Step I warming upCan you tell what we use energy for?_______________________________________________________Step II Pre-reading1. What is it in the picture on P25?2. What is it used for?_______________________________________________________3. How does it work?Step III While- readingTask 1:skimmingGlance quickly at the magazine article and answer the questions.1. Who wrote the magazine article? What is the name of the magazine?_______________________________________________________2.What are the names of the three scientists mentioned in the article?_______________________________________________________3. What is the main topic of the article?Step IVRead the passage carefully and finish the exercises.Exercise I.True or false1. The temperature la st century didn’t increase much.2. Everyone believes that global warming is caused by the activities of humans.3. Janice Foster believes that global warming is caused by burning fossil fuels.4. Natural gas is a greenhouse gas.5. Carbon dioxide is a byproduct of burning fossil fuels.6 People accept Charles Keeling’s data becaus e he took accurate measurements.7 Flooding could be one of the effects of future global warming.8 George Hambley believes scientists are just guessing about the effects of globalwarming.9 George Hambley is worried about the effects of carbon dioxide on plant growth.10 It is clear what the effects of global warming will be.Exercise IIPost-readingDiscussion:The earth is becoming warmer, in your opinion, does it matter? If itdoes, as a student, what can you do about it?课文原句突破1．There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.[信息提取]there’s no doubt that...意为“……是毫无疑问的”。

Book6 Unit4 Global warming 词汇运用导学案【课标解读目标】：学习并掌握本单元所学词汇和短语，学会根据与全球变暖知识的词汇进行分类记忆，以便逐步扩大词汇量【教学目标1：1.扎实掌握重点词汇与省略的用法，提高自己的语言运用能力。

2.自主学习，合作探究，共同完成任务。

3.激情投入，运用所学词汇表达情感并激情投入，体验学习的快乐。

【重点和难点】：四个单词和四个短语的用法【教学漩】【巧设导语激发兴趣】一、核心单词1. range n.行列,范围；v.排列，归类于【基本用法】a wide range of...大范围的；许多各种不同的within the range of 在.... 的范围之内beyond the range of...超越... 的范围out of/ beyond one's range某人能力达不到的range from... to ... /between... and ...从.....至！J .. 不等练练吧：(1)The shop keeps goods.(商品品种多).(2)(年龄范围)is from six to twelve years old.(3)The temperature ___________________________(在15度到35度之间).(4)The houses are sold out _____________________在这个价格范围之内的房子己售完.2.average adj.平均的;普通的，中等的n.平均，平均数【基本用法】on average平均地；通常above/below the average在平均水平以上(下)an/the average of. ................的平均数练练吧：(1)His of this three subjects is 96.他三科的平均成绩是96。

Book 6 Unit 4 Global warming导学案ReadingLearning aims：1.To analyze how global warming has come about；2. To know different attitudes towards global warming and its effects;Before class（课前自主学习）1. mild _________2. trend _________3. catastrophe _________4. 随意的_________5. steady _________6. famine _________7. consequence _________ 8. graph _________ 9. v.陈述；说明_________II.重点短语1. come about _________2.keep on _________3. subscribe to _________4. be opposed to _________5. 大量的_________6. carbon dioxide _________7. fossil fuels _________ 8. 温室效应_________ 9 .导致_________III.分析并理解长难句。

1. It is human activity that has caused this global warming rather than a random but natural phenomenon. (Line 6)2. All scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. (Line 18)3. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth.(Line 26-29)Reading proceduresStep 1. Lead in and pre-reading1. What effects will global warming bring about?2. Is global warming beneficial or harmful?______________________________________ _______________________________________Step 2 While-readingThe whole class will be divided into 8 Groups for competitions in reading. A star is one point.1. Fast readingTask 2. Read para.1 in one min and answer the following questions.(1)Who wrote the magazine article？(★)(2) What questions does she explore in the article? (★)________________________________ ___________________________________________ Task 3. Read Part2 in 5 mins and choose the best answer.※(Please underline some useful sentences in the text and correct the statements if necessary.)(1). What do the scientists think has caused this global warming? (★★)A. Small amounts of gases in the atmosphere.B. Human activity.C. Natural phenomenon.D. Heat energy.(2). Which of the following statements is NOT true according to the two graphs? (★★★)A. Graph 1 shows the temperature of the earth increased about one degree during the 20th century.B. Graph 2 shows the CO2 content steadily increased over this forty-year period.C. Graph 2 shows the CO2 content in the air increased by 70 parts per million from 1957 to 1997.D. The more CO2, the higher temperature.(3). Which of the following statements is TRUE? (★★★)A. All scientists disagree that global warming mainly results from the burning of fossil fuels.B. When people burn fossil fuels, the most important “greenhouse” gases--methane (甲烷) will begiven out.C. Too much greenhouse gases trap heat from the sun and therefore the earth is warmer and warmer.D. Greenhouse effect does no good to the earth at all.Task 4．Read Part 3 in 2 mins and fill in the chart. (★★)__________________________________________________________________________________ Step 3 Post-readingTask 1．Interview (Pair work) (★★★★)Work in pairs to interview the people around about global warming in 4 mins.(1) Please use the sentences in the interview:1. Excuse me, could I get your name?2. Do you think global warming matters? Could you tell me why?3. Do you think we should do something about global warming? For example?(2) Please use the sentences in the report, like:1. Just now I interviewed ___________. He /She was from_________________.2. He/She thinks global warming _________________. Because______________________________________________________________________________________________________________3. In order to reduce greenhouse gases, he/she suggested that __________________________________________________________________________________________________________________ Task 2 Summary (Group work)Work in groups to retell the whole passage, based on the notes. (★★★★)1.How has global warming come about?↓human activity (burn fossil fuels) →extra greenhouse gases(CO2↑)↓warm the earth trap the heat2. Does it matter? differen t attitudes → unsure↙↘Dr. Foster George Hambleycatastrophe/ serious not worry / positiveWe learned that _________________________________________________________________________ ______________________________________________________________________________________ _______________________________________________________________________________________ Step 4 Assignment① Reread the passage and finish all the exercises on P28 in your textbook.② Search for some more materi als and think about what’s your attitude towards global warming.。

Unit 4 Global warming[单词拼写应用]核心单词vi.趋向；易于；照顾1．tendvt.照顾；护理n．量；数量quantity 2．vin．一瞥 .看一下；扫视3．glancevt.拥护；提倡；主张．advocate 4adj.温和的；温柔的；淡的．mild 5n．种类；范围6．rangen．环境；情况7．circumstancevt.使恢复；使振作refresh 8．adj.平均的average 9．n．现象．phenomenon 10[语境运用] 用所给词的适当形式填空。

1．She strongly advocates/advocated (advocate) that we should make joint effortsto contribute to the youth football progress.2．The water recreation centre provides a variety of activities，ranging(range)from swimming to diving.3．Quantities(quantity) of money have been spent in bringing up the children sincethey were married.4．The Qinghai-Tibet Plateau is the world's highest plateau，averaging (average)over 4，000 metres above sea level.5．Pleasant music is often played between classes to make studentsrefreshed(refresh) and relaxed for a while.6．An eclipse of the moon is one of the natural phenomena (phenomenon).拓展单词vtn．污染；弄脏pollution pollute .污染→1．vtadj.反对的；对立的opposed 较量→.反对；反抗；与(某人)．2opposenadv.因此；所以consequence ．结果；后果；影响→consequently ．3vtn．声明；陈述；表达statement 陈述；说明→state 4． .adjadv平稳地；持续地平稳的；持续的；稳固的→．5steady ..steadilyvin．生存；存在存在→．exist existence .6vn．贡献．贡献；撰稿→7．contribute contributionvtn．顾客consumer consume ． .消费；消耗；耗尽；吃完→8vn．增长；生长growth ．grow ．增长；生长→9vnn．教育工作者；教育家educator ．教育→education10．educate ．教育→vinvi.不同意；意见不合→同意→agree disagree .同意→agreement disagreement．11．n．分歧；不一致[语境运用] 用所给词的适当形式填空。