Unit 13 We’re trying to save the earth! Section A 【教案+课件】

Unit 13 We’re trying to save the earth! Section A Period 1 Section A 1a-2d 本单元带领学生了解一些有关地球污染，动物濒危等问题。并且教会大家如何保护濒危动物，如何通过回收再利用等方式来保护地球。本单元主要复习语法内容为：情态动词和动词形式变化，主要带领学生进行语法复习，巩固语法知识。 【知识与能力目标】 1.掌握重点单词及短语。 2.复习语法：能正确区分和使用以下语法结构：现在进行时，现在完成时，被动语态，情态动词和used to 句型。 【过程与方法目标】 本课主要采用任务型教学法，情景教学法以及多媒体辅助教学，充分发挥教师的主导作用和学生的主体地位。利用现代化教育技术优化教学过程，通过课件为学生创设更多生动活泼的语言环境，把学生吸引到活动中去，并激发他们主动参与学习的欲望，努力培养学生自主学习的能力。 【情感态度价值观目标】 通过学习具有环境危机意识，学会关注环境保护环境。 【教学重点】 （1）能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。 （2）保护环境的措施方法。 【教学难点】 能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。 教学过程 Step 1. Presentation Show the picture of the earth and tell students the earth is polluted now. 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. Learn some new words. Step 2. Work on 1a 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 _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ Step 3. Listening 1. Work on1b. 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. 2. Listen again and answer the following questions. What does Tony want to do later this afternoon? He wants to go swimming with Mark in the river later this afternoon. 2) Why doesn’t Mark want to go with Tony? Because the river was really dirty. Even the bottom of the river was full of rubbish, and there were no more fish for fishermen to catch. 3) How was the river in the past? It used to be so clean. It has been the nicest river in this town. Step 4. 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 clea ... ...