Unit 13 We’re trying to save the earth. Section A 教学课件PPT 共2课时（含课本听力）

课件40张PPT。Section A (1a-2d)Unit 13 We're trying to save the earth!学习目标 Key words & phrases: litter, bottom, fisherman, coal, ugly, advantage, cost, wooden, plastic, make a difference Key sentences: 1. The river was dirty. Even the bottom of the river was full of rubbish. 2. But it used to be so clean! 3. Yes, but people are throwing litter into the river.Read and learnWords and expressionsLead inThe earth is polluted.air pollutionThe factories that burn coal pollute the air with a lot of black smoke. water pollutionFactories put waste into the river.litter v. 乱扔 n. 垃圾 rubbish waste 垃圾 废弃物mobile phone pollutionnoise pollutionThere are more cars on the road.Presentation1aHere are some words related to different kinds of pollution. Write them in the box below. Then add more words.loud music cars rubbish planes littering ships factories smoking building houses mobile phonesnoise pollution _____ _____ _____ _____air pollution _____ _____ _____ _____water pollution _____ _____ _____ _____loud musicplanesmobile phonesfactoriescarssmokingshipsfactorieslitteringrubbishbuilding housesbuilding houses1bListen and complete the sentences.really dirtyrubbishfishlitterwastegovernmentclose downclean up1cThe river was dirty. Even the bottom of the river was full of rubbish.But it used to be so clean!Role-play the conversation. Yes, but people are throwing litter into the river.Everyone in this town should play a part in cleaning it up!PracticeMake conversations using the pollution in 1a.......Language points1. We’re trying to save the earth! 我们正在竭尽全力拯救地球! try to do sth.=try one’s best to do sth. 努力去做某事。 e.g. Every student should try to study hard in order to study in a good university. 为了进入一所好大学学习，每个学生 都应该努力学习。2. Here are some words related to different kinds of pollution. be related to 与……有关 e.g.?I am not?related?to?him in any way. 我和他无任何关系。 3. Everyone in this town should play a part in cleaning it up! play a part in 在……方面起作用 e.g. A good diet plays a large part in helping people live longer. 健康的饮食在帮助人们长寿方面起着 非常大的作用。 play a part 在……中扮演角色 e.g. He was invited to play a part in this TV play. 他被邀请参加这个电视剧的演出。4. Even the bottom of the river was full of rubbish. Yes, but people are throwing litter into the river.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。litter指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收。 e.g. Throw the rubbish out. 把垃圾扔出去。　　The room is full of rubbish. 房间里堆满了垃圾。　　Pick up your litter after a picnic. 野餐后将废弃物收拾好。 2aListen to the interview. Circle the kinds of pollution that Jason and Susan talk about. land pollution B. air pollution C. noise pollution D. water pollution2bListen again and complete the sentences.1. The air is badly polluted because there are _____ on the road these days. 2. Factories that burn ... ...