英语人教版九年级全册Unit13 SectionA (1a-2c).pptx

1、初中英语人教版九年级上册,Unit13 Were trying to save the earth. SectionA（1a-2c）,Teaching aims,1、知识目标：现在进行时（Present progressive） 被动语态（Passive voice） used to的用法 现在完成时（Present perfect） 情态动词（can ,should,must.表示建议要求） 2、能力目标：通过语言的交流实现知识的运用。 3、情感目标：地球是我们的家园，每个人都有义不容辞的保护她的责任和义务。,Preview checking,1、现在进行时的构成及其使用环境。 2、现在完成

2、时的构成及其使用环境。 3、被动语态的构成及其使用环境。 4、used to(造句) 5、should（造句）,The earth is polluted.,Lead-in,air pollution,water pollution,mobile phone pollution,noise pollution,1a,Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.,noise pollution _ _ _ _,air po

3、llution _ _ _ _,water pollution _ _ _ _,loud music,planes,mobile phones,factories,cars,smoking,ships,factories,littering,rubbish,building houses,building houses,1b,Listen and complete the sentences.,really dirty,rubbish,fish,litter,waste,government,close down,clean up,Groupwork,1、分角色表演1c对话。 2、用现在进行时

4、描述地球家园正在遭受的污染。 3、用被动语态描述环境污染。 4、用现在完成时描述我们生活的环境。 5、用used to描述你眼中环境今昔的不同。,stop riding in cars,recycle books and paper,stop using paper towels or napkins,What should we do? What else?,Listening practice for parts 2a and 2b,Groupwork 小组活动，以Save the earth为题运用本课信息编一组对话，关于污染问题及要采取的行动。对话中应用到现在进行时，现在完成时，过去时

5、，被动语态，情态动词等的形式。（表演时声音洪亮，组内成员积极参加，最高5分）,Groupwork,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. C: People are throwing litter into the river. D: Factories are also putting waste into the river.

6、 A: What should we do? B: We should write to the government and ask them to close down the factories. C: Yes, everyone in this town should play a part. D: What else can we do? E: Everyone should help to clean up the river. F: And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.,Homework,1. Copy the new wor