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1、Unit 8 We re trying to save the earthI. PresentationShow the picture of the earth and tel 1 students the earth is polluted now.For example: (1) The factories that burn coal pollute the air with a lot of black smoke.(2) Factories put waste into the river.(3) People should thiow away litter in the bin
2、.(4)There are more cars on the road.II. LearningHere are some words related to different kinds of pollution. Write them in the boxbelow. Then add more words.loud music cars rubbish planes littering ships factoriessmoking building housesmobi1e phones noise pollution air pollution water pollutionKeys
3、: noise pollution loud music planesmobi1e phones building housesair pollution factories smoking cars building houses water pollution ships rubbish littering factoriesListening1. lb Listen and complete the sentences.What was the problem?The river was . Even the bottom(底部)of the river was full of. The
4、rewere no moreforfishermen (渔民)tocatch.What caused the problem?People are throwingFactories are putting _into the river.into the river.How should the problem be solved?We should write to the .them tothe_ and ask factories. Everyoneshould help tothe river.Keys: really dirty rubbish fish litter waste
5、governmentclose down clean upListen again and check (V) the sentences you hear.1) We could go fishing in the river.2) The river was really dirty.3) The river has always been the nicest river in this town.4) We should ask the teachers for help.Keys: 2 3IV. Practice1. Role-play the conversation in 1c.
6、Mark: The river was dirty. Even the bottom of the river was full of rubbish.Tony: But it used to be so clean!Mark: Yes, but people are throwing 1i tter into the river.Tony: Everyone in this town should play a part in cleaning it up!2. Make conversations using the pollution in la.A: The river has alw
7、ays been the nicest river in this town.B: Yes, it used to be so clean.A: But I was there last weekend and the river was really dirty.B: What caused the prob1em?A: People are throwing litter into the river.B: What should we do?A: Factories are also putting waste into the river.B: Yes, everyone in thi
8、s town should play a part.A: We should write to the government and ask them to close down the factories.B: What else can we do?A: Everyone should help to clean up the river.V. Language pointsWe re trying to save the earth!我们正在竭尽全力拯救地球！try to do =try one s best to do 努力去做某事。e. g. Every student should
9、 try to study hard in order to study in a university. 为了进入大学学习，每个学生都应该努力学习。1. Here are some words related to different kinds of pollution.be related to 与有关e. g. I am not related to him in any way.我和他无任何关系。2. Everyone in this town should play a part in cleaning it up!play a part in 在方面起作用e. g. A good
10、 diet plays a large part in helping people live longer.健康的饮食在帮助人们长寿方面起着非常大的作用。play a part在中扮演角色e. g. He was invited to play a part in this TV play.他被邀请参加这个电视剧的演出。3. Even the bottom of the river was full of rubbish.Yes, but people are throwing 1itter into the river.litter和rubbish都可指“垃圾”，用作不可数名词。rubbi
11、sh指“没用的东西（被扔或将要丢弃的无用的东西）”不可回收。litter指“（室内或公共场所）乱扔的废物（纸屑、不要的包装纸、废瓶等）”还可回收e. g. Throw the rubbish out. 把垃圾扔出去。The room is ful 1 of rubbish. 房间里堆满了垃圾。Pick up your litter after a picnic.野餐后将废弃物收拾好。VI. Listening2a Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.A. l
12、and pollutionB. air pollutionC. noise pollutionD. water pollutionKeys: B A2b Listen again and complete the sentences.1) The air is badly polluted because there are on the road these days.2) Factories that burn coal also the air with a lot of black smoke.3) There is also too much rubbish and waste. P
13、eople things every day.4) People are also 1 ittering in like parks. This is turning beautifulplaces into ugly (丑陋)ones.Keys: more cars pollute are throwing away public placesListen and answer the questions.1) Who is the interviewer talking to?2) What are they talking?3) What other problems do they s
14、ee?Keys: Susan and Jason.The environmental problems.There s too much rubbish and waste in the streets.VII. Practice (2c)Use the information in 2a and 2b to role-play conversations between Jason and Susan.Jason: The air has become rea11y polluted around here. I m getting very worried.Susan: Yes, I us
15、ed to be able to see stars in the sky.Jason: The problem is thatDiscussionAsk students what we should do to save the earth. Help students answer, turn off the lights when you leave a room; stop riding in cars; stop using paper towels or napkins; recycle books and paper.VIII. ReadingRead 2d and compl
16、ete the chart.ProblemsSolving problemsair pollutionwaste pollutionwooden （木头的）chopsticks or plastic forksrubbish1. Role-play the conversation.Interviewer: Jason and Susan, what are your ideas for solving these problems?Jason: Well, to cut down air pollution, we should take the bus or subway instead
17、of driving.Suscin: Yeah, or ride a bike. There are other advantages （优点）of bike riding. It s good for health and it doesn t cost （花费）anything!Interviewer: Great ideas! What about waste pollution?Susan: Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a yea
18、r ago.Jason: Me, too. A1 so, I never take wooden chopsticks or plastic （塑料）forks when I buy takeaway （外卖食品）food. I use the ones at home.Suscin: And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.Interviewer: So together, our actions can make a differenc
19、e and lead to a better future!IX. Summary and language pointsThis is turning beautiful places into ugly ones.turninto 把变成e.g. The icy rain seemed like to turn into snow.渐渐地冻雨又变成雪花的模样。1. It s good for health and it doesn, t cost anything!cost v.花费；使付出指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。e. g. The new shi
20、rt cost Mr Wang 200 yuan. 王先生花了 200 元买了新衬衫。How much does the new computer cost?新电脑花了 多少钱？take, spend, pay & costtake, spend, pay和cost都可以表示“花费”，但它们的用法各有不同。1) take多表示花费时间，常用于It takes sb. some time to do sth.这一句型中，其 中it作形式主语。e.g. It usually takes me 40 minutes to cook the dinner.2) spend多表示花费时间和金钱，主语通常
21、是人，常用于sb. spend (s) some time / money on sth.和 sb. spend(s) some time / money (in) doing sth.两种句型。e. g. David spent 2,000 yuan on the new machine.My father spends an hour (in) watching the news on TV every day.3) pay多表示花费金钱，主语通常是人，常用于sb. pay(s) some money for sth.句型。 c. g. Tommy paid 20 yuan for his
22、 breakfast yesterday.4) cost多表示花费金钱，主语通常是物，常用于sth. cost(s) (sb.) some money.句 型。e. g. The new dress cost Linda 88 yuan.根据句意用take, spend, pay或cost的适当形式填空。1) That new carthem lots of money.2) Mona 50 yuan on the books just now.3) It usually me an hour to do my homework.4) You should some time practisi
23、ng your pronunciation.5) My brother 6 000 yuan for the new computer yesterday.Keys cost spent takes spend paid3. So together, our actions can make a difference and lead to a better future!make a difference (to-)表示(对)产生影响或作用e. g. Do you think his words would make any difference to the final decision?
24、你认为他的话会对最后的决定产生影响吗？The new teacher always encourages Ii ttle Tom. This has made a big di fferenceto him.新来的老师总是鼓励小汤姆，这对他影响很大。XI. Exercises用动词的适当形式填空。1) We* re trying (save) the earth.2) There used to (be) clean and beautiful.3) There are too many for to catch (fish).4) It* s bad for environment to use (wood) chopsticks.Keys: to save be fish fishermen woodenThink aboutThe earth is bad1y polluted. Please make a poster and think of what we can do.XII. HomeworkCopy the new words and remember them.1. Read the listening materials of lb, 2a.