Keys: B A
2. 2b Listenagain and complete the sentences.
1) The air is badly polluted because there are ___________ on the road these days. 2) Factories that burn coalalso ________ the air with a lot of black smoke.
3) There 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 (丑陋) ones.
Keys: morecars pollute are throwing away public places 3. Listen and answer the questions. 1) Who is the interviewer talking to? 2) What are they talking?
3) What other problems do they see? Keys: Susanand 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 really polluted around here. I'm getting very worried. Susan: Yes, I used to be able to see stars inthe sky. Jason: The problem is that… VIII. Discussion
Ask 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.
IX. Reading
1. Read 2d and complete the chart.
2. Role-play the conversation.
Interviewer: Jason andSusan, what are your ideas for solving these problems?
Jason: Well, to cut down air pollution, weshould take the bus or subway instead of driving. Susan: 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 bringinga bag to go shopping can help. I started doing that a year ago.
Jason: Me, too. Also, I never take woodenchopsticks or plastic (塑料) forkswhen I buy takeaway (外卖食品) food. Iuse 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! X. Summaryand language points
1. This is turning beautiful places into ugly ones. turn… into… 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。
2. 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 shirt 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 & cost
take，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) some time / money (in) doing sth.两种句型。
e.g. David spent 2,000 yuan on the newmachine.
My father spends an hour (in) watchingthe 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.) 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 car________ them lots of money. 2) Mona __________ 50 yuanon the books just now. 3) It usually _______ mean hour to do my homework.
4) You should __________ sometime practising your pronunciation. 5) My brother_______ 6, 000 yuan for the new computer yesterday. Keys cost spent takes spend paid
3. 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? 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. Thishas made a big difference to 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 environmentto use _________ (wood) chopsticks. Keys: to save be fish fishermen wooden
XII. Think about
The earth is badly polluted.Please make a poster and think of what we can do. XIII. Homework
1. Copy the new words and remember them. 2. Read the listening materials of 1b, 2a.