unit13pubicclass.ppt

* The earth is polluted. pollution（n.) 污染 We’re trying to save the earth! 我们正在竭尽全力拯救地球! try to do =try one’s best to do 努力去做某事。 e.g. Every student should try to work hard in order to study in a university. 为了进入大学学习，每个学生都应该 努力学习。 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. mobile phone pollution 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 litter和rubbish都可指“垃圾”，用作不可数名词。 rubbish指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。 1a Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. 与…相关 noise pollution ____________ ____________ ____________ ____________ 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 and complete the sentences. The river was _____________. Even the bottom (底部) of the river was full of _________. There were no more ______ for fishermen (渔民) to catch. What was the problem? really dirty rubbish fish What caused the problem? People are throwing _______ into the river. Factories are putting ______ into the river. We should write to the ____________ and ask them to ___________ the factories. Everyone should help to __________ the river. How should the problem be solved? litter waste government close down clean up Listen again and check (√) the sentences you hear. 1. We could go fishing in the river. 2. The river was really dirty. 3. The river has always been the nicest river in this town. 4