九年级人教版第九单元第一课时SectionA1.pptVIP

Unit 9When was it invented?Section A Period 1 Language goal Talk about the history of inventions 被动语态(The Passive Voice) 英语中的动词有两种语态：主动语态(The Active Voice)和被动语态(The Passive Voice)。主动语态中，主语是谓语动作的执行者，被动语态中，主语是谓语动作的承受者。 被动语态的构成：be +及物动词的过去分词 被动语态(The Passive Voice) 一般现在时态的被动语态：am / is / are + p.p 一般过去时态的被动语态：was / were + p.p 一般将来时态的被动语态：will be + p.p 现在完成时态的被动语态：have / has been + p.p 现在进行时态的被动语态：am / is / are being + p.p 过去完成时态的被动语态：had been + p.p 含有情态动词的被动语态：can / may / must…be + p.p 被动语态(The Passive Voice) 主动句变被动句的方式： 主动句： 主语 + 及物动词谓语 + 宾语 被动句： 主语 + be + 过去分词 + by 宾语 Our teacher loves her students. Her students are loved by our teacher. Warming Verb past tense past participle use used used invent invented invented bring brought brought drink drank drunk build built built tell told told produce produced produced Look at the things. In what order do you think they were invented? Listening (1b: P68) The Passive Voice be invented in +time be invented by + sb Listening (2a, 2b: P69) Oral Practice (2c: P69) Sentence pattern: What is it / are they used for? Who was it / were they invented by? It is / They are used for doing... It was / They were invented by ... A: When was the _______ invented? B: I think it was invented in ______. Sample dialogues: A: What is this? B: This is a heated ice cream scoop. A: What is it used for? B: It is used for scooping really cold ice cream. A: Who was it invented by? B: It was invented by Chelsea Lanmon. A: What is the car used for? B: The car is used for traveling. A: What is the _______ used for? B: I think it is used for _________________. be used for 被动语态, “被用来做……”。介词 for 表目的用途, 可接名词或动名词形式。 e.g. The woolen sweater is use