初中英语_We are trying to save the earth教学课件设计.ppt

* 学科： 英语 年级：初四 版本： 主讲教师： 工作单位： 课程名称Unit8 We are trying to save the earth * Language points 标题二 标题三 标题四 Revision aims Language points Language goal: talk about pollution and environmental protection Read: Make an outline and enjoy the article Write Watch the video and say sth freely Complete sentences in the paragraph 过去有许多森林。河流过去是那么的干净。But now世界人口变得越来越多。What’s more，车辆越来越多。As a result, 地球被严重污染。As we all know，好的环境对我们很重要，因此我们应当尽力帮助拯救地球。 transitional words 连接词 There used to be many forests. The river used to be so clean. But now the world’s population is growing larger and larger. What’s more, there are more and more cars. As a result, the earth is badly polluted. As we all know, good environment is very important to us, so we should help to save the earth. Pollution and environmental protection Talk about pollution and environmental protection Kinds of pollution What caused the pollution? How can we cut down the pollution? What else can we do to help save the earth? Call on people to do sth for the earth. * List the kinds of pollution air pollution water pollution waste pollution noise pollution land pollution mobile phone pollution What caused the pollution? had better do sth had better not do sth Ways to give suggestions should/shouldn’t do can/can’t do could do must/mustn’t do Why don’t you do Why not do What about doing How about doing Shall we do Do sth Don’t do sth How can we cut down the pollution? How can we cut down the pollution? Discuss: What else can we do to help save the earth? Live a low-carbon life and save energy 好好利用废物 Express your own opinions and call on people to do sth for the earth What if there are no trees? Trees benefit us in countless ways. Without trees, the whole world will suffer. Without trees, forests will disappear. Since more than 70% of animals and plants live in forests, they will die out sooner or later. Without trees, the land will dry out and then become desert. And as a