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1、Unit9 When was it invented? Section A主动语态与被动语态：英语动词有两种语态,即主动语态(The Active Voice)与被动语态（The Passive Voice)。主动语态表示主语是动作的执行者/ 被动语态表示主语是动作的承受者e.g. 1. They make trains in Zhuzhou . 主动语态Trains are made in Zhuzhou. 被动语态 2.The farmers grow cotton every year. 主动语态Cotton is grown by the farmers every year. 被动语
2、态一：被动语态的构成:助动词be+ (及物动词的) 过去分词am (is, are) + done 一般现在时was (were) + done 一般过去时二: 主动语态变为被动语态的步骤:1.把原主动句中的宾语转换为被动语态的主语.2.把动词改为被动形式,即 “be + 过去分词” . 注意 be动词要按新的主语的人称和数进行变化,时态要和原来的主动语态的时态保持一致.3. 原来主动语态句中的主语,如果需要,就放在by后面以它的宾格形式出现. 如果没有必要就可以省略.其他的成分 (定语,状语) 不变, 句式也不能变.主动语态变被动语态的结构图:Bell invented the teleph
3、one in 1876.主语 谓语动词过去时宾语 时间状语The telephone was invented by Bell in 1876主语谓语动词的过去分词 宾语 时间状语三：被动语态的特殊用法:（一）：双宾语 buy/make sb sth=buy/make sth for sb give sb sth=give sth to sb1.My father bought me a computer.A computer was bought for me by my father.I was bought a computer by my father.2. He gives me a
4、 book. A book is given to me by him. I am given a book by him（二）、无to不定式变为被动时加上to一感feel 二听listen to.hear三让let.have.make四看watch. see. look at. noticeeg. We often see him play basketball. He is often seen to play basketball by us.（三）、注意动词短语的完整性The baby is taken good care of by the nurse（四）、无被动语态的动词。tak
5、e place happen come out come true die belong to课堂练习;一：用所给的词的适当形式填空。1.What do you think is the most _(help) invention?2.Edison was a great _(invent). He had 1,093 _(invent) in his life.3. Light are used for _(see) things in the dark.4.Personal computers _(invent) in 1976.5.Which language _the most wi
6、dely _(speak) in the world?6.When was the c_ invented?7.Please put the used b_ into the box.8.Here are the shoes with a_ heels.二：用所给动词的正确形式填空：1) The bike _(fix) up by Xiao Ming yesterday.2) Sunglasses _ (use) for protecting peoples eyes.3) A picture _(put) up on the blackboard.4) French_ (speak) in
7、France.5) Teenagers should _(allow) to choose their own clothes.三：句型转换1.People all over the world enjoy surfing .(同义句转换) Surfing _ _ by people all over the world.2.When he was thirty , Tom decided to move to London .(同义句转换） At the _ of thirty ,Tom made a _ to move to London .3.Kate took good care of
8、 the baby yesterday evening .(改为被动句） The baby _ _ _ _ _ by Kate yesterday evening .4.She was seen to come out of the library by him .(改为主动句) He _ _ _ out of the library .5.The League was founded in Guangzhou in 1922 .(对画线部分提问) _ _ _ _ the League _ ?6.He didnt go to bed before he finished his work .(同义句转换) He _ go to bed _ he finished his work .7.They are used for seeing in the dark .(对画线部分提问) _ are they used _ ?8. It was invented in 1888 .(对画线部分提问) _ was it _ ?反思与收获：
