九年级英语13单元课件.ppt

Factories produce too much dangerous smoke. The traffic produces too many gases. Some people smoke in public places. Unit13 We’re trying to save the earth! Section A 1a -2c（第1课时） air pollution The factories that burn coal pollute the air with a lot of black smoke. n. 煤炭 Factories put waste into the river. water pollution noise pollution There are more cars on the road. litter v. 乱扔 n. 垃圾 rubbish， waste 垃圾，废弃物 People should throw away litter in the bin. n. 垃圾箱 land pollution 1a Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. noise pollution ____________ ____________ ____________ ____________ cars air pollution ___________ ___________ ___________ ___________ water pollution ____________ ____________ ____________ ____________ loud music planes mobile phones factories cars smoking ships factories littering rubbish building houses building houses loud music cars rubbish planes littering ships factories smoking building houses mobile phones 1b. Listen to the tape and complete the sentences. What was the problem? The river was ___________.Even the bottom(底部）of the river was full of _________. There were no more _____ for fishermen 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. really dirty rubbish fish litter waste government close down clean up 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 po