1. Unit 13 We are trying to save the earth.

2. Language Goal Talk about pollution and envirnmental protection

3. To talk about air pollution, water pollution and sound pollution. To think about ways of protecting the environment. To learn the new words: advantage, scientific

4. serious pollution We are harming our planet in so many ways. 伤害 air pollution soil pollution water pollution the earth song by Michael Jackson !!!

5. Factories pour dangerous gases into the air.

6. Cars also pour dangerous gases into the air. tail gas

7. air pollution! The weather is always foggy. We can’t see the blue sky. We can’t breathe the fresh air. Do you know why?

8.  Factories produce too much dangerous smoke.  The traffic produces too many fumes.  Some people smoke in public places.

9. Dad, what’s the acid rain?

10. Natural resources are disappearing at a dangerous rate. 以危险的速度

11. Group One Group Two Group Three

12. desert

13. 灭绝 extinct

14. Help save the earth We must think of better way to treat our planet in future.

15. What do you usually do ? Are you a friend of the Earth? Take this quiz. START

16. You drink a can of cola. What do you do? I throw away cans. I throw away cans. I recycle cans. I recycle cans.

17. You throw away the cans. That’s bad for the Earth.

18. You recycle the cans. That’s good for the Earth.

19. There are a lot of old newspapers at your home. What do you do? I throw the old newspapers away. I recycle the old newspapers.

20. You throw old newspapers away. You waste paper. That’s bad for the Earth.

21. You recycle old newspapers. You save paper. That’s good for the Earth.

22. You go shopping. What do you do? I use a lot of new plastic bags. I use my own bag.

23. You use a lot of new plastic bags. That’s bad for the Earth.

24. You use your own bag. That’s good for the Earth.

25. When you write on a piece of paper, what do you do? I write on one side only. I write on both sides.

26. You use paper on one side only. That’s bad for the Earth.

27. You use paper on both sides. That’s good for the Earth.

28. close down the factories; help to clean up the river; take the bus or subway; ride a bike; bring a bag to go shopping,throw rubbish in the cans; turn off the lights when you leave a room; use paper or resusable bags; recycle books and paper; turn off the shower when you wash your hair; don't use napkins; rethink,reuse, recycle......

29. industry harmful cost wooden plastic affort n. 工业 adj. 有害的 v. 花费 adj. 木制的 adj. 塑料的 v. 支付的起 Words and expressions

30. make a difference take part in turn off pay for cut down lead to 起作用；有影响 参加 关掉 付费；付出代价 减少 导致 Words and expressions

31.  We ’ re trying to save the earth. 我们在努力拯救地球。  The rive used to be so clean. 这河流过去是如此的清澈。  The air is badly polluted. 空气被严重污染。  The method is not only cruel, but also harmful to the environment. 这种方法不仅残酷，而且对环境也有害。

32. 基础预习 写出下面单词的意思 litter________ bottom________ fisherman_________ ugly__________ cost________ plastic________ coal_______ advantage_______ wooden_______

33. 把下面的短语与汉语意思连起来。 make a diffenence cut down lead to be full of play a part in 导致 起作用 减少 参与 充满

34. Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. 1a loud musiccarsrubbishplanes litteringshipsfactoriessmoking bulding housesmobile phones

35. noise pullotionair pollution water pollution cars, factories, smoking, building houses(burning, power plants, nuclear waste disposal) Loud music, planes, building houses, mobile phones(machines, crowds, vihicles) rubbish, littering, ships, factories(sewage, industrial waste, pesticides)

36. Listen and complete the sentences. 1b what was the problem? The river was _________. even the bottom of the river was full of ________. there were no more _____ for fishmen to catch. really dirty rubbish fish

37. 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 them to ___________ the factories. everyone should help ________to the river. litter waste government close down clean up

38. 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 littering in the river. Tony: Everyone in this town should play a part in cleaning it up! Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a. 1c