【正文】 ir has bee really polluted around here. I’m getting very worried. Susan: Yes, I used to be able to see stars in the 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 plete the chart. Problems Solving problems air pollution waste pollution wooden (木頭的 ) chopsticks or plastic forks rubbish 2. Roleplay 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 of driving. Susan: Yeah, or ride a bike. There are other advantages (優(yōu)點 ) of bike riding. It’s good for health and it doesn’t cost (花費 ) 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 year ago. Jason: Me, too. Also, I never take wooden chopsticks or plastic (塑料 ) forks when I buy takeaway (外賣食品 ) 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 together, our actions can make a difference and lead to a better future! X. Summary and language points 1. This is turning beautiful places into ugly ones. turn… into… 把 …… 變成 …… . The icy rain seemed like to turn into snow. 漸漸地凍雨又變成雪花的模樣。 2. It’s good for health and it doesn’t cost anything! cost v. 花費；使付出 指花費金錢，主語通常是物。 cost 的過去式和過去分詞均為 cost。 . The new shirt cost Mr Wang 200 yuan. 王先生花了 200 元買了新襯衫。 How much does the new puter cost? 新電腦花了多少錢？ take, spend, pay amp。 cost take， spend， pay 和 cost 都可以表示 “花費 ”，但它們的用法各有不同。 1) take 多表示花費時間，常用于 It takes sb. some time to do ，其中 it 作形式主語。 . It usually takes me 40 minutes to cook the dinner. 2) spend 多表示花費時間和金錢，主語通常是人，常用于 sb. spend(s) some time / money on sb. spend(s) some time / money (in) doing 。 . David spent 2,000 yuan on the new machine. My father spends an hour (in) watching the news on TV every day. 3) pay 多表示花費金錢，主語通常是人，常用于 sb. pay(s) some money for 。 . Tommy paid 20 yuan for his breakfast yesterday. 4) cost 多表示花費金錢，主語通常是物，常用于 sth. cost(s) (sb.) some money. 句型 。 . The new dress cost Linda 88 yuan. 根據(jù)句意用 take, spend, pay 或 cost 的適當(dāng)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. 4) You should __________ some time practising your pronunciation. 5) My brother _______ 6, 000 yuan for the new puter 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 (對 ……) 產(chǎn)生影響或作用 . Do you think his words would make any difference to the final decision? 你認(rèn)為他的話會對最后的決定產(chǎn)生影響嗎？ The new teacher always encourages little Tom. This has made a big difference to him. 新來的老師總是鼓勵小湯姆，這對他影響很大。 XI. Exercises 用動詞的適當(dāng)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 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. Section A 2 (3a3c) I. Revision (1) Roleplay 2d. (2) Translate these sentences into English. ① 甚至是河底都滿是垃圾。 ② 這個小鎮(zhèn)上的每個人都應(yīng)該參加打掃。 ③ 騎自行車有其它的優(yōu)點。 ④ 我買外賣食品從來不拿木筷子和塑料叉子。 II. Lead in (1) Teacher tells students the earth is badly polluted. What should we do to save the earth? Let’s take action. For example: ① Turn off the lights when you leave a room。 ② Take buses instead of driving cars ③ Recycle books and paper. (2) There are some animals are endangered. We should do something to protect the animals and the environment! III. Discussion (1) Have you ever seen a shark? (2) What do you know about sharks? IV. Reading (1) Sharks are endangered, read the passage and judge the sentences. ① Shark’s fin（魚鰭） soup is famous and expensive all around the world. ② We have to kill a whole shark to get a bowl of shark’s fin soup. ③ People cut off sharks’ fins and throw the sharks back into the ocean. ④ Sharks are in the bottom of the food chain in the ocean’s ecosystem. ⑤ WildAid and the WWF are environmental protection groups in China. ⑥ Shark’s fin s are good for health. (2) Complete the fact sheet in 3a. Where shark fin soup is popular Number of sharks caught and traded every year How much the numbers of some kinds of sharks have fallen in the last 20 to 30 years Two environmental groups which are against “finning” V. Practice (3b) (1) Read the passage and dill in the blanks with the words in the box. 1. Many people do not realize they are killing a whole shark ______ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, ____ if their numbers drop, the ocean’s ecosystem will be in danger. 3. Many think that sharks are too strong to be endangered, _____ they are wrong. 4. _________ there are no scientific studies to support this, a lot of people believe that shark fins are good for health. 5. Sharks may disappear one day ___ we do not do something to stop the sale of shark fins. (2) Retell the passage according to the words below. shark’s fin soup, in southern China each time cut off no longer not only…but also… at the top d