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1、Unit 4 Global warmingUsing languageWhat cause the Global Warming?It is too hot!smoke from carssmoke from factories目前面临的环境问题目前面临的环境问题Water pollutionDeforestationThe warSkim the letters and find who the writers are and what their purpose of writing the letters is. The first letter is written by a stud
2、ent who is asking for suggestions for his project global warming.The second letter is written by an editor of Earth Care magazine. He offers the student some suggestions on what to do about global warming. Read the second email, and answer the question:Does Earth Care agree with Ouyang Guangs opinio
3、n that individuals can have no effect?No, Earth Care does not agree.Earth CaressuggestionsCan you carry it out?ReasonsList Earth Cares suggestions and then in groups, discuss whether you think you can carry out each suggestion. If you are not using electrical appliances, turn them off.YesSave energy
4、YesSave energyYesSave energyYesSave energyIf youre cold, put on more clothes instead of turning up the heat.Motor vehicles use a lot of energy, so walk or ride a bike if you can.Recycle cans, bottles, plastics and newspapers and buy things made from recycled materials.YesSave energyYesPlants absorb
5、carbon dioxide from the air.Plant more trees.Get your parents or friends to buy products that are made to save energy.YesTogether, individuals can make a difference.Talk with your family and friends about global warming and tell them what youve learned.Read the text carefully and fill in the blanks.
6、What can we do about global warming? Turn a(n) _ off when youre not using it. Put on more clothes instead of turning up the _. Walk or _ instead of taking motor vehicles. _ cans, bottles, plastics and newspapers.electrical applianceheatride a bikeRecycle Buy things made from _ _. Buy products that a
7、re made to save _. _ in your garden or your school yard. Talk with your family and friends about _.materialsenergyPlant treesglobal warmingrecycledWritingMake a posterMake a poster for your school that tells students various ways they can reduce the amount of carbon dioxide in the air.The steps to w
8、rite the posteruUnderline the most important parts of earth cares suggestions.uList the ways to reduce carbon dioxide in the air.uUse imperative sentences (祈使句祈使句) in your poster.uGive your poster a large heading.uMake a slogan at the end like the one at the end of the letter from Earth Care.Sample
9、posterFight global warmingCut down on energy. Cut down on carbon dioxide.uIf not using an electrical item, turn it off.uIf you suddenly feel cold, dont turn the heat up, put on a jacket instead.uWalk or ride a bike and save fossil fuels.uRecycle paper, cardboard and newspapers.uBuy products made fro
10、m recycled materials.uBuy energy-saving products like low energy ulight bulbs.uPlant trees to absorb CO2.uTell your friends about global warming. Every effort counts!Further discussion:From your point of view, which of the following activities will harm our earth the most? Why? How to solve it?Anucl
11、ear bomb 核弹核弹gas bomb 毒气弹毒气弹radiation 辐射辐射chemical weapons化学武器化学武器ban the warpeaceBharmful gasacid rain 硫酸雨硫酸雨reduce air pollutionsolar energy太阳能太阳能 wind powerhydropower水力发电水力发电CCO2 floodsdraughtsonly-once chopsticks 一次性筷子一次性筷子paper handkerchief 纸巾纸巾polluteearth surfaceterrible smellreducereuserecyc
12、leD1. on behalf of sb. 表示表示“代表某人代表某人”, 通常在通常在 句中作状语句中作状语, 如：如： On behalf of my colleagues and myself I, thank you. 我代表我的同事和我本人向你表示感谢。我代表我的同事和我本人向你表示感谢。 用法归纳用法归纳: on behalf of sb. as the representative of on sbs behalf 联想拓展联想拓展: representative n. 代表代表 Mary is a workers representative on the Board. 玛丽
13、是理事会的工人代表。玛丽是理事会的工人代表。Language Points2. advocate 用作动词用作动词, 表示表示“拥护、提倡拥护、提倡”时时, 后接名词或动名词形式后接名词或动名词形式, 如如: He advocates reforming the prison system. 他主张改良监狱制度。他主张改良监狱制度。 用法归纳用法归纳: advocate sth. 提倡提倡, 拥护某事拥护某事 advocate doing sth. 提倡提倡, 拥护做某事拥护做某事 advocate that + 从句从句 主张主张, 提倡提倡 特别提示特别提示: advocate 后接从句时
14、后接从句时, 从句谓语需用从句谓语需用 “should do”表示虚拟表示虚拟, should可以省略。可以省略。3. commitment n. 表示表示“承诺承诺, 保证保证”, 常用在常用在短语短语make a commitment to sb. / sth.中中, 指指“对某人对某人/某事做出承诺某事做出承诺” 如：如：Our company has a commitment to quality and customer service.我们公司对质量和顾客服务有承诺。我们公司对质量和顾客服务有承诺。联想拓展联想拓展: commit v. 1) 使承担义务使承担义务; 使作出保证使作
15、出保证; 使表态使表态He didnt commit himself to anything.他没有作任何承诺。他没有作任何承诺。2) 做做 (不合法的、错的或愚蠢的事不合法的、错的或愚蠢的事); 犯犯commit murder, theft, a blunder, an unforgivable error, etc. 犯凶杀、自杀、偷窃、大错、不可原谅犯凶杀、自杀、偷窃、大错、不可原谅的错误等。的错误等。commit suicide 自杀自杀4. put up with 忍受忍受; 忍耐忍耐; 受苦受苦That woman, as a housewife, has a lot to put
16、 up with. 作为家庭主妇作为家庭主妇, 那女人得忍受很多烦恼。那女人得忍受很多烦恼。知识拓展知识拓展: put aside 节省节省(钱、时间钱、时间); 储蓄储蓄; 把把放在一边放在一边 put away 收拾起来收拾起来; 储存储存(钱钱); 喝掉喝掉 put back 放回原处放回原处; 拖延拖延 put down 写下写下; 记下记下; 控制控制 put forward 提出提出(意见、建议意见、建议); 推荐推荐put off 延期延期; 推迟推迟 put on 假装假装; 增加增加; 上演上演(戏剧戏剧) put out 熄灭熄灭; 使忧虑使忧虑; 扑灭扑灭; 出版出版pu
17、t up 举起举起; 张开张开(伞伞); 张贴张贴; 为为提供食宿提供食宿5. so long as =as long as 只要只要, 如果如果As long as there is life, there is hope. 留得生命在留得生命在, 不怕没希望不怕没希望. 在用在用as /so long as连接的从句中，当其谓语为连接的从句中，当其谓语为be,而主语和主句的主语相同时而主语和主句的主语相同时, 则从句的主语和则从句的主语和be可以省略。如可以省略。如: Im sure we are safe as long as (we are) in his care. 我深信只要在他的
18、保护下我深信只要在他的保护下, 我们就会平安无事。我们就会平安无事。You can go out on condition that you wear an overcoat. = You can go out _ you wear an overcoat. as long as只要你开心只要你开心, 你做什么都没关系。你做什么都没关系。As long as you are happy, it doesnt matter what you do.I. 根据句意及所给单词的首字母或汉语根据句意及所给单词的首字母或汉语提示提示, 写出各单词的正确形式。写出各单词的正确形式。1. Youll nee
19、d three large c_ of paint.3. I got out of the car but left the m_ running.4. They decided to set up a(n) _ (核的核的) power station.5. Ill heat it up in the _(微波炉微波炉).ansotor nuclearmicrowaveII. 用所给词的适当形式填空。用所给词的适当形式填空。1. There was _ (disagree) among doctors about the best way to treat the disease.2. _
20、(pollute) from cars is the main cause of global warming.disagreementPollutionIII. 根据提示将下列句子补充完整。根据提示将下列句子补充完整。1. If she could _ _ (忍受那里的条件忍受那里的条件), we would take her with us.2. I dont mind your knowing it _ (只要事情不进一步发展只要事情不进一步发展).3. If you want to save energy, youd better not use the air conditioner
21、, the heater _ (等等等等) when it is not necessary. put up with the conditions thereso long as it goes no furtherand so on4. I realized that she was right and it _ (有影响有影响).made a differenceIV. Choose the best answers.1. -I will not come here tomorrow. - _ to me, because I dont care. A. It doesnt make a
22、ny difference B. It makes much difference C. It doesnt make no difference D. It makes a differenceA 2. You can go out, _ you promiseto be back before 11 oclock. A. as far as B. so far as C. when D. as/so long as3. She will have to find some other work for she cant _ this loud noise any more.A. come
23、up with B. keep up with C. grow up with D. put up withDD4. _the department I would like to thank you all. A. Instead of B. In spite of C. On behalf of D. Due to5. He made a great _ to the success of the project. A. progress B. effect C. contribution D. attitudeCCListening and Speaking1 Listen to par
24、t 1 and decide which statements Professor Keeling does NOT agree with.1. We should stop depending on fossil fuels for our energy.2. 90% of our energy comes from fossil fuels.3. We can replace fossil fuels with cleaner sources of energy.4. Nuclear power is a good source of energy.2 Listen to Part 1 a
25、gain and tick the energy sources that are mentioned. Complete the notes on them.Sources of energyNotesFossil fuels Produce carbon dioxide cheap and concentrated form of energyWind powerEnergy from the sunNuclear power clean not very practical with present technology does not produce carbon dioxide d
26、angerous clean not practical: need huge areas of land to provide enough energy3 Listen to Part 2 and the list three things we can do to save energy.First we must try to find ways of using fossil fuels that does not put carbon dioxide into the air.Second we must produce products that are economical w
27、ith energy.Third we must ask people to cut down on the energy they use.4 Listen to part 2 again and fill in the blanks.LI BIN: What about _? They dont cut down on their use of _.energyfactoriesKEELING: No, they dont. However, that is a _ we must work on as a _ community. That means _ and _countries
28、will have to work together.problemglobaldevelopeddevelopingLI BIN: But its not the _ countries that put most of the carbon _ into the air. The developed countries are really the ones to _.developingdioxideblame FOSSIL FUELS AND OTHER FORMS OF ENERGY (L = Li Bin K = Keeling) Li Bin, a university stud
29、ent, is interviewing Professor Keeling on the local student radio station about the use of fossil fuels and other sources of energy.Part 1L: Professor Keeling, Ive read that we must stop using fossil fuels if we want to reduce the amount of carbon dioxide in the air.K: Yes, thats right, Li Bin. Howe
30、ver its difficult. Our modern industrial societies depend on the energy we get from fossil fuels. Its a very cheap and concentrated form of energy. L: Is it true that about 90% of the worlds energy comes from fossil fuels?K: Yes, thats correct. And there is enough to last for centuries.L: Could we r
31、eplace fossil fuels with clear sources of energy like sun or wind power?K: Im afraid not. We just cant produce enough. You need huge areas of land to produce enough wind energy. The technology we have at present cannot provide enough sun energy. L: So what about nuclear power? That doesnt produce ca
32、rbon dioxidea?K: True, but its very dangerous.Remember the accident at Chernobyl.People are still dying of the radiationthat was produced by THAT disaster! Part 2L: So what CAN we do?K: Well, there are three things. First we must find ways of using fossil fuels that wont put carbon dioxide into the
33、air. Second, we must produce products that are economical with energy. Third, we must ask people to cut down on the energy they use.L: But thats on a personal level. What about factories? They dont cut down cut down their use of energy. K: No, they dont. However, that is a problem we must work on as
34、 a global community. That means developed and developing countries will have to work together.L: But its not the developing countries that put most of the carbon dioxide into the air. The developed countries are really the ones to blame.K: Thats true. So we must work together because global warming
35、will affect everyone. If we want the future generations to have a good life, we must ALL look after the planet.Note: The USA is the largest energy user in the world and the largest producer of the greenhouse gas carbon dioxide. China comes second in both of these. China has been going through huge e
36、conomic development, and has had as much growth in one decade as the industrial world experienced in nearly a century. However, it has been at a high cost to the environment.AGREEMENT Exactly. Thats true. Youre right. Thats right. Thats correct. I agree. DISAGREEMENTIm afraid I disagree with you. Im
37、 afraid not. No, I dont agree. I dont think so. No way. I doubt . Discussion Professor Keeling: Whatever we do, we have to do it as a global community. That means developed and developing countries will have to work together.Li Bin: But its not the developing countries who put most of the carbon dio
38、xide into the air. The developed countries are really the ones to blame. S1: I agree with Li Bin. It is the developed countries that are really the ones to blame and to pay for that.S2: Well, I dont think so. I think Professor Keeling is right. Whateverwe do, we have to do it as a global community.
39、Developed and developing countries should work together to improve the environment.Sample DialogueS3: I hold the same viewpoint as Li Bin. In developed countries people are producing a large amount of carbon dioxide, which contributes to global warming. Isnt it their duty to do something to decrease
40、 the speed of global warming?S1: Exactly.S2: It is true that the developed countries are the ones to blame and they should do something. But is it right for developing countries to look on without doing anything? Remember we have only one earth, which is like a big family. All of us are family membe
41、rs. Think about this: in a family, if one child makes a mistake, what should his brothers or sisters doblame him without doing anything or help him correct the mistake?S1: I see. We should take part in the action instead of looking on and complaining. S3: I agree, too. Thank you. Ive got a better understanding about this.Homework Write short passage to give some advice on how we can do to solve the problem of global warming. Help me, help you, help everyone.Return GREEN to the earth!Help me, help you, help everyone.Return GREEN to the earth!windmillshydropowersolar energy