Unit 13 We are trying to save the earth教案.docx

1、Unit 13 We are trying to save the earth教案Unit 13 Were trying to save the earth!一、教学目标：1. 语言知识目标基本词汇：litter, advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic, takeaway, bin, shark, fin, method, cruel. Harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportatio

2、n, recycle, napkin, upside, gate, bottle, president, inspiration, iron, work, metal, creativity, 基本词组：be harmful to, at the top(of sth.), take part in, turn off, take action, throw away, put sth. to good use, pull down, bring back基本句型：Were trying to save the earth! The river used to be so clean. The

3、 air is badly polluted. No scientific studies have showed that shark fins are good for health. We should help save the sharks. 2. 技能目标: 能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。3. 情感目标: 有环境危机意识，学会关注环境保护环境。二、教学重难点： 1. 教学重点：（1）能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。 （2）保护环境的措施方法。2. 教学难点：能正确运用现在进行时，现在完成时，被

4、动语态，情态动词和used to 句型。三、教学步骤:Section A 1 (1a-2d)Learning objectives:1. To listen for specific information.2. To talk about pollution and environmental protection.3. To learn to use the sentence patterns. used to.but now should do sth.I. PresentationShow the picture of the earth and tell students the e

5、arth 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 throw away litter in the bin. (4)There are more cars on the road.Learn some new words.II. Work on 1aHere are some words related to di

6、fferent kinds of pollution. Write them in the box below. Then add more words.loud music cars rubbish planes littering ships factories smoking building houses mobile phonesnoise pollution air pollution water pollution _ _ _ _ _ _ _ _ _III. Listening1. Work on1b. Listen and complete the sentences.What

7、 was the problem?The river was _. Even the bottom (底部) of the river was full of _. There were no more _ for fishermen (渔民) to catch.What caused the problem?People are throwing _ into the river. Factories are putting _ into the river.How should the problem be solved?We should write to the _ and ask t

8、hem to _ the factories. Everyone should help to _ the river.2. Listen again and answer the following questions.1) What does Tony want to do later this afternoon?He wants to go swimming with Mark in the river later this afternoon.2) Why doesnt Mark want to go with Tony? Because the river was really d

9、irty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch. 3) How was the river in the past? It used to be so clean. It has been the nicest river in this town.3. 原文 used to do sth. “过去常常” 表示过去习惯性的动作但如今已不存在。 play a part in doing sth. “参与做某事; 在做某事上起作用”。

10、IV. Practice1. Role-play the conversation in 1c.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 litter into the river.Tony: Everyone in this town should play a part in cleaning it up!2. Make conversations

11、 using the pollution in 1a.A: The river has always 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 problem?A: People are throwing litter into the river.B: What should we do?A: Factories are also putti

12、ng waste into the river.B: Yes, everyone in this 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 points1. Were trying to save the earth! 我们正在竭尽全力拯救地球! try to do =try

13、 ones best to do 尽力去做某事 【运用】 我会尽力做好这项工作。_Welltryto finish the work in a week. try短语 try doing sth. 试着做某事 try on 试穿try out 尝试；试验；试试用try短语的适当形式填空。1) I went to the tailors to _ my new suit.2) Lets _ your method. It seems very good.3) I think you should _ to improve your English.4) Let me _ the story. 让

14、我试着讲一讲这个故事吧。2. Here are some words related to different kinds of pollution. be related to 与有关 e.g. Is the driver relate to the accident? 司机和这起事故有关吗？VI. Listening1. Work on 2a. Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.A. land pollution B. air pollutionC.

15、noise pollution D. water pollution2. Work on 2b. 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. People _ things every day

16、.4) People are also littering in _ like parks. This is turning beautiful places into ugly (丑陋) ones. Complete the sentences according to the dialogue.1. I _ _ _ able to see stars in the sky, but now I cant see them clearly. used to be2. The air _ _ really _ around there. has becomepolluted3. People

17、are also _ in the public places. littering4. The factories that burn _ also _ the air with a lot of black smoke. coalpolluted 3. 原文 Pay attention to the sentences.VII. Practice (Work on 2c)Use the information in 2a and 2b to role-play conversations between Jason and Susan.Jason: The air has become r

18、eally polluted around here. Im getting very worried.Susan: Yes, I used to be able to see stars in the sky.Jason: The problem is that VIII. DiscussionAsk students what we should do to save the earth. Help students answer, turn off thelights when you leave a room; stop riding in cars; stop using paper

19、 towels or napkins; recycle books and paper.IX. Reading1. Read 2d and complete the chart.ProblemsSolving problemsair pollutionwaste pollutionwooden (木头的) chopsticks or plastic forksrubbish2. Complete the sentences.What should we do?1. We should take _ or _ instead of driving.2. We should also _ _ _.

20、 Its good for health!3. Bring _ to go shopping.4. Never take _ or _ when buying takeaway food.5. _ in the bins and keep public places clean and beautiful.3. Role-play the conversation.Interviewer: Jason and Susan, what are your ideas for solving these problems?Jason: Well, to cut down air pollution,

21、 we should take the bus or subway instead of driving.Susan: Yeah, or ride a bike. There are other advantages (优点) of bike riding. Its good for health and it doesnt cost (花费) anything!Interviewer: Great ideas! What about waste pollution?Susan: Mmm, I think simple things like bringing a bag to go shop

22、ping can help. I started doing that a year ago.Jason: Me, too. Also, 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.Susan: And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.Interviewer: So t

23、ogether, our actions can make a difference and lead to a better future!4. Pay attention to the sentences.X. Language points1. Its good for health and it doesnt 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 shirt cost Mr Wang 200 yuan. 王先生花了200元买了新衬衫。 How much does the

24、new computer cost? 新电脑花了多少钱？辨析 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，主语通常是人，常用于sb. spend(s) some time / money on sth.和sb. spend(s) so

25、me 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。 e.g. Tommy paid 20 yuan for his breakfast yesterday.4) cost多表示花费金钱，主语通常是物，常用于sth. cost(s) (sb

26、.) some money. 句型。 e.g. The new dress cost Linda 80 yuan.(1) It takes sb. some time to do sth. (主语为it)(2) sb. spend(s) time/money on sth. (主语为sb.) sb. spend(s) time/money (in) doing sth.(3) sb. pay(s) money for sth. (主语为sb.)(4) sth. cost(s) sb. money (主语为sth.)根据句意用take, spend, pay或cost的适当形式填空。1) Tha

27、t new car _them 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 practising your pronunciation.5) My brother _6, 000 yuan for the new computer yesterday.2. So together, our actions can make a difference and lead to a better fu

28、ture! make a difference (to) 表示(对)产生影响或作用 make no difference to 对没有影响 e.g. Learning English well can make a difference to your future. 学好英语会对你的前途有影响。XI. Summary. Exercises.根据句意及所给首字母提示，补全句中所缺单词。1.Ccan be used to produce electricity.2. The new carca lot of money, but it was certainly worth it.3. Ther

29、e is awbed, a table and two chairs in this small room.4. It is a very clean city. You will hardly findlwhen you walk along the street.5. My uncle is a greatfand he caught four fish this morning.6. Some cups in the shop are nice and expensive and the others areuand cheap.7. Living in this street has a lot of a . The only drawback (弊端) is noise.根据句意，从方框中选择恰当的短语填空，有的需要变换形式。write to, lead to, clean up, cut down, play a part in1. What a mess! You should _ your room now.2. Every farmer knows that weather _ farming.3. As we all know