九年级英语unit13,Section A 2a-2dppt课件

1、Section A2a 2d Language GoalTalk about pollution and envirnmental protectionTo talk about air pollution, water pollution and sound pollution.To think about ways of protecting the environment.To learn the new words: advantage, scientificSection A 1b Tony: Hey, Mark, maybe we could go swimming in the

2、river later this afternoon.Mark: I dont think I want to go, Tony. Tony: Why not?Mark: I was there last weekend and the river was really dirty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch. Tony: No way! It used to be so clean. In fact, it has a

3、lways been the nicest river in this town.Mark: Not anymore. I think people are throwing litter into the river. Factories are also putting waste into the river.Tony: Thats terrible! We should write to the government. They should close down the factories.Mark: Good idea! But I think everyone in this t

4、own should help to clean up the river, too. Everyone should play a part, not just the government.基础预习基础预习写出下面单词的意思写出下面单词的意思ugly_cost_plastic_coal_advantage_wooden_takeaway_ bin_把下面的短语与汉语意思连起来。把下面的短语与汉语意思连起来。make a differencecut downlead to be full of play a part in 导致导致起作用起作用减少减少参与参与充满充满2a2a Listen

5、to the interview. Circle the kinds of pollution that Jason andSusan talk about. A. land pollution B. air pollution C. noise pollution D. water pollution1. 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

6、 is also too much rubbish and waste. People _things every day.4. People are also littering in_ like parks. This is turning beautiful places into ugly ones.more carspolluteare throwing awaypublic places2b2b Listen again and complete the sentences. Section A 2a 2bInterviewer: Today were talking to Jas

7、on and Susan about environmental problems. Jason and Susan, can you tell us about some of the problems youve seen? Jason: I think one problem is that the air is badly polluted. I hardly ever see blue skies anymore. Susan: Yes, and I used to see the stars clearly.Interviewer: What do you think has ca

8、used this problem? Susan: Well, there are more cars on the road these days. Jason: And factories that burn coal also pollute the air with a lot of black smoke.Interviewer: What other problems do you see? Susan: I guess theres too much rubbish and waste in the streets. Jason: Yes! Every day people ar

9、e throwing away things like wooden chopsticks, plastic bowls and plastic bags. Susan: Theyre also littering in public places, for example, during picnics in parks. This is turning beautiful places into ugly ones.Interviewer: Youre right. These are serious problems for our environment. Next, lets tal

10、k about the things we can do to help.Jason: The air has become really 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 . Use the information in 2a and 2b to role-play conversations between Jason and Susan.2c2c2dRead 2d and

11、 complete the chart.ProblemsSolving problemsair pollutionwaste pollutionwooden chopsticks or plastic forksrubbishtake the bus, subway or ride a bike instead of driving bring a bag to go shoppinguse chopsticks or forks at homethrow rubbish in the binsSection A 2dInterviewer: Jason and Susan, what are

12、 your ideas for solving these problems? Jason: Well, to cut down air pollution, we should take the bus or subway instead of driving. Susan: Yeah, or ride a bike. There are other advantages of bike riding. Its good for health and it doesnt cost anything!Interviewer: Great ideas! What about waste poll

13、ution?本句中本句中To cut down air pollution是动词不定式作目的状是动词不定式作目的状语。语。 cut down, 意为意为减少减少； 是是“动词动词+副词副词”结构的结构的短语，后面所带的宾语为名词时，宾语可以位于短语，后面所带的宾语为名词时，宾语可以位于down的前面或后面；为代词时只能位于的前面或后面；为代词时只能位于down前面。前面。 Youd better cut the article down to about 2000 words.cut 后接后接off, into, up, in 的不同：的不同：cut off切断；切除切断；切除cut into

14、把把.切成切成cut up切碎切碎cut in 插队插队 Its good for health and it doesnt cost anything! cost v. 花费；使付出花费；使付出 指花费金钱，主语通常是物。指花费金钱，主语通常是物。cost的过的过去式和过去分词均为去式和过去分词均为cost。 e.g. The new shirt cost Mr. Wang 200 yuan. 王先生花了王先生花了200元买了新衬衫。元买了新衬衫。 How much does the new computer cost? 新电脑花了多少钱？新电脑花了多少钱？take, spend, pay

15、& costtake，spend，pay和和cost都可以表示都可以表示“花花费费”，但它们的用法各有不同。，但它们的用法各有不同。1) take多表示花费时间多表示花费时间，常用于，常用于It takes sb. some time to do sth.这一句型中，其这一句型中，其中中it作形式主语作形式主语。 e.g. It usually takes me 40 minutes to cook the dinner.2) spend多表示花费时间和金钱，主语通多表示花费时间和金钱，主语通常是人常是人，常用于，常用于sb. spend(s) some time / money on

16、 sth.和和sb. spend(s) some time / money (in) doing sth.两种句型。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，主语通常是人多表示花费金钱，主语通常是人，常用于常用于sb. pay(s) some money for sth.句句型。型。 e.g. Tommy paid 20 yuan for his breakfast yest

17、erday.4) cost多表示花费金钱，主语通常是物多表示花费金钱，主语通常是物，常用于常用于sth. cost(s) (sb.) some money.句句型。型。 e.g. The new dress cost Linda 88 yuan.根据句意用根据句意用take, spend, pay或或cost的适当的适当形式填空。形式填空。1. That 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.cost sp

18、ent takes4. You should _ some time practising your pronunciation.5. My brother _ 6, 000 yuan for the new computer yesterday.spendpaid Susan: Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a year ago. Jason: Me, too. Also, I never take wooden chopsticks o

19、r plastic forks when I buy takeaway 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 together, our actions can make a difference and lead to a better future!make a difference (to) 表示表示(对对)产生影响或作用产生影

20、响或作用 e.g. Do you think his words would make any difference to the final decision? 你认为他的话会对最后的决定产生影响吗？你认为他的话会对最后的决定产生影响吗？The new teacher always encourages little Tom. This has made a big difference to him.新来的老师总是鼓励小汤姆，这对他影响新来的老师总是鼓励小汤姆，这对他影响很大。很大。. 用方框中所给词的适当形式填空。用方框中所给词的适当形式填空。1. Dont throw _(垃圾垃圾)

21、everywhere.2. In winter, many people burn _(煤煤) to keep warm.3. The police found a body at the _(底部底部) of the lake.4. The _(花费花费) of living in big cities is very high.5. He keeps a rabbit in a big _(木制的木制的) box.cost wooden, coal , bottom, littercost woodencoalbottomlitter1. He _ go out with his pare

22、nts, but nowhe _ staying at home alone. A. use to; is used to B. is used to; used to C.use to; used to D. is used to; is used to2. The interesting book _ me 10 yuan. A. took B. paid C. spend D. cost. Choose the best answer.AD3. We must do something useful to _ pollution. A. cut off B. cut up C. cut down D. cut in4. Smoking can _ lung cancer. youd better giv