2. Save the Earth!

3. Endangered animals Pollution

4. air pollution Factories produce too much black smoke. Factories pour dangerous gases into the air. The traffic produces too many fumes. Some people smoke in public places. air pollution

5. Factories put waste into the river. People are throwing litter into the river. There are no more fish for fisherman to catch. water pollution

6. There are more cars on the road. noise pollution

7. 1a Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. loud music carsrubbish planes littering shipsfactoriessmoking building housesmobile phones 与 … 有关

8. noise pollution ______________ air pollution ______________ water pollution ______________ loud music; planes; ships; building houses; mobile phones smoking; factories; factories; rubbish; littering; ships cars building houses

10. Polluted Daxia River What was the problem of Daxia River? What caused the problem? How should the problem be solved?

11. This is Daxia River,it used to be very clean in the past. It has always been the most beautiful river in our city. People can drink and wash in Daxia River.

12. But now the river was really dirty. Even the bottom ( 底部 ) of the river was full of rubbish. There were no more fish for fishermen ( 渔民 ) to catch.

13. Factories are putting waste into the river.

14. People are throwing litter into the river.

15. I think we should write a letter to our government and ask them to close down the factories.

16. Everyone should help to clean up the Daxia River and play a part in cleaning it up!

17. What was the problem? The river was __________. Even the bottom ( 底部 ) of the river was full of ________. These 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 them to __________ the factories. Everyone should help to ________ the river. Listen and complete the sentences. 1b really dirty rubbish fish litter waste government close down clean up 充满 把垃圾扔到河里 关闭工厂

18. The river was dirty. Even the bottom of the river was full of rubbish. But it used to be so clean! 1c1c 1c1c Role-play the conversation. Then make your own conversations about the kinds of pollution in 1a. Yes, but people are throwing litter into the river. Everyone in this town should play a part in cleaning it up!

19. The earth is badly polluted. Please make a poster and think of what we can do.

20. help to clean up the river; take the bus ; ride a bike or walk to school; bring a bag to go shopping, throw rubbish in the cans; turn off the lights when you leave a room; use paper or reusable bags; recycle books and paper; turn off the shower when you wash your hair;

21. 15 help to clean up the river; take the bus ; ride a bike or walk to school; bring a bag to go shopping, throw rubbish in the cans; turn off the lights when you leave a room; use paper or reusable bags; recycle books and paper; turn off the shower when you wash your hair;

22. help to clean up the river; take the bus ; ride a bike or walk to school; bring a bag to go shopping, throw rubbish in the cans; turn off the lights when you leave a room; use paper or reusable bags; recycle books and paper; turn off the shower when you wash your hair;

23. 23 help to clean up the river; take the bus ; ride a bike or walk to school; bring a bag to go shopping, throw rubbish in the cans; turn off the lights when you leave a room; use paper or reusable bags; recycle books and paper; turn off the shower when you wash your hair;

24. help to clean up the river; take the bus ; ride a bike or walk to school; bring a bag to go shopping, throw rubbish in the cans; turn off the lights when you leave a room; use paper or reusable bags; recycle books and paper; turn off the shower when you wash your hair;

25. 7 help to clean up the river; take the bus ; ride a bike or walk to school; bring a bag to go shopping, throw rubbish in the cans; turn off the lights when you leave a room; use paper or reusable bags; recycle books and paper; turn off the shower when you wash your hair;

26. help to clean up the river; take the bus ; ride a bike or walk to school; bring a bag to go shopping, throw rubbish in the cans; turn off the lights when you leave a room; use paper or reusable bags; recycle books and paper; turn off the shower when you wash your hair;

27. 30 help to clean up the river; take the bus ; ride a bike or walk to school; bring a bag to go shopping, throw rubbish in the cans; turn off the lights when you leave a room; use paper or reusable bags; recycle books and paper; turn off the shower when you wash your hair;

28. Check if you know these phrases. 努力做某事 与 … 有关 河底 充满 把垃圾扔到河里 关闭 打扫 过去常常 在 …… 中扮演角色 参与 try to do =try one’s best to do be related to the bottom of the river be full of throw litter into the river close down clean up used to play a part in

29. 1. The city _________ _______ ( 过去 ) be so clean. 2. We should play a part in _________ (clean). 3. __________ (litter) causes pollution. used to cleaning Littering

30. 1.Review the new words and expressions. 2.Practice the conversation in 1c.