人教版九年级Unit 13 We're trying to save the earth!-Section A 2a—2d-ppt课件-(含教案)-公开课-(编号：10560).zip

Unit 13 Were trying to save the earth! Section A 1 (1a-1c) 一、教学目标：一、教学目标： 1. 语言知识目标语言知识目标 基本词汇基本词汇：litter, advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic, takeaway, bin 基本词组基本词组：be harmful to, at the top(of sth.), take part in 基本句型基本句型：Were trying to save the earth! The river used to be so clean. The air is badly polluted. 2. 技能目标技能目标: 能正确运用现在进行时，被动语态，情态动词和 used to 句型。 3. 情感目标情感目标: 有环境危机意识，学会关注环境保护环境。 二、教学重难点：二、教学重难点： 1. 教学重点：（1）能正确运用现在进行时，被动语态，情态动词和 used to 句 型。 （2）保护环境的措施方法。 2. 教学难点：能正确运用现在进行时，被动语态，情态动词和 used to 句型。 三、教学步骤三、教学步骤: I. Presentation Show the picture of the earth and tell students the earth is polluted now. Play a songabout the earth. For example: (1) The factories that burn coal pollute the air with a lot of black smoke. (2) Factories put waste into the river. (3) People should throw away litter in the bin. (4)There are more cars on the road. II. Learning Here 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 phones noise pollution air pollution water pollution _ _ _ _ _ _ _ _ _ _ _ _ Keys : noise pollution loud music planes mobile phones building houses air pollution factories smoking cars building houses water pollution ships rubbish littering factories III. Listening 1. 1b Listen 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 (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. Keys: really dirty rubbish fish litter waste government close down clean up IV. Practice 1. Role-play the conversation in 1c. 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 throwing litter into the river. Tony: Everyone in this town should play a part in cleaning it up! 2. Make conversations using the pollution in 1a. A: The river has always been the nicest river in this town. B: Yes, it used to be so clean. A: But I was there last weekend and the river was really dirty. B: What caused the problem? A: People are throwing litter into the river. B: What should we do? A: Factories are also putting waste into the river. B: Yes, everyone in this town should play a part. A: We should write to the government and ask them to close down the factories. B: What else can we do? A: Everyone should help to clean up the river. V. Language points 1. 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。 VI. Discussion Ask students what we should do to save the earth. Help students answer, turn off the lights when you leave a room; stop riding in cars; stop using paper towels or napkins; recycle books and paper. VII.Summary T:What should we do to save the earth? Help students answer, A:Yeah, or ride a bike. There are other advantages (优点) of bike riding. Its good for health and it doesnt cost (花费) anything! B:Well, to cut down air pollution, we should take the bus or subway instead of driving. T:Great ideas! What about waste pollution? C:Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a year ago. D:Me, too. Also, I never take wooden chopsticks or plastic (塑料) forks when I buy takeaway (外卖食品) food. I use the ones at home. E:And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone. T:So together, our actions can make a difference and lead to a better future! VIII.Emotion Watch a vedio Green Mountain And Clean Water to have the sense of protecting the environment. VIIII.Practice.根据句意用 take, spend, pay 或 cost 的适当形式填空。 1) That new car _ them lots of money. 2) Mona _ 50 yuan on the books just now. 3) It usually _ me an hour to do my homework. 4) You should _ some time practising your pronunciation. 5) My brother _ 6, 000 yuan for the new computer yesterday. Keys: cost spent takes spend paid X. Homework 1.Try to memorize the news words and language points. 2.The earth is badly polluted.Please think of what we can do to save the earth and make a poster to tell more people to save the earth. XI.Blackboard design Reflection: 通过本课学习，学生们了解了污染以及污染带来的危害，以及保 护地球环境的必要性。学完本课后，同学们要积极行动起来，为保 护环境，为实现国家青山绿水作贡献。 Unit 13Were trying to save the earth! Section A 1a-1c noise pollution air pollution water pollution .