被动句3-获奖课件

1、被动语态The Passive Voice 英语动词有两种语态： 主动语态 (the Active Voice) 被动语态 (the Passive Voice)A. 主动语态表示主语是动作的执行者。B. 被动语态表示主语是动作的承受者。We planted the tree.The tree was planted by us.We speak English.主语谓语宾语English is spoken by us.主语谓语宾语主动语态被动语态They cleaned the classroom yesterday. 昨天他们打扫了教室。The classroom was cleaned

2、 by them yesterday.昨天教室被他们打扫了。(一)被动语态基本用法:当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。be + PP(二)被动语态的基本结构:有各种时态的变化1. Now English _ by more and more people all over the word. A. speaks B. is spoken C. was spoken一般现在时的被动语态：主语+am / is / are + PP3. More man-made satell

3、ites _ in the future. A. will send up B. will be sent up C. are sent up一般将来时的被动语态：主语+will/ shall+ be + PP2. The lost boy _ at the street corner last night. A. was found B. is found C. was looked for一般过去时的被动语态：主语+was / were + PP4. Three bridges _ since last year. A. have built B. were built C. have b

4、een built现在完成时的被动语态：主语+have/ has+ been + PP5. Flowers _ every day. A. has been watered B. should be watered C. should water含有情态动词的被动语态：情态动词 + be + PP现在进行时被动语态：am/is/are +being +PP过去进行时态呢?was were+being +PP(四)主动语态变被动语态: (1)把原来的宾语提到前面作被动语态的主语;(2)把谓语动词变成被动结构(be过去分词) (根据被动语态句子里的主语的人称和数，以及原来主动语态句子中动词的时态来

5、决定be的形式)。 (3)把主动语态中的主语放在介词by之后作宾语，将主格改为宾格。如： They make the bikes in the factory. The bikesin the factory.are madethemby主变被步骤:1.找宾语: 即动作的承受者(改为主语)He washed his car yesterday. His car3. 判断新主语的单复数:确定be动词的单复数. be4. 判断动词的时态 : 即be动词的时态.2. 修改谓语的语态:即be+原V.过去分词 washed5. 修改原句的主语 :即by +主语(变宾格). (by him) yester

6、day.iswas was1. Amy can take good care of the cat 2. They should sing some beautiful songs.2. He bought his friend some fruits yesterday.His friend was bought some fruits (by him) yesterday.Some fruits were bought for his friend (by him) yesterday.1. He bought her a watch. A watch was bought for her

7、 (by him). She was bought a watch (by him).Practice:1 Must I pay for it at once?_ it _ _ _ at once?2 We will build a new lab.A new lab _ _ _.3 They arent stopping the traffic now.The traffic _ _ _ now.4 How long have you kept the book?How long _ the book _ _? Mustbepaidforwillbebuiltisntbeingstopped

8、hasbeenkept5. If your homework _(do) well, you may go to play.6. The ship model _ be _ (make) in two days.is donewillmade4). Well put on the play next Sunday5). Workers are building a new teaching building in our school6). They had completed the railway by the end of last year The play will be put o

9、n next SundayA new teaching building is being built by workers in our schoolThe railway had been completed by the end of last year 7). We should protect the earth8). You need to paint the wall The earth should be protected The wall needs to be paintedCorrecting mistake2.Correct the mistake(s) in each sentence if any:1)Two boys hurt while playing a ball2)The singer lived in London until he was sending to university3)How long do you think the meeting will be lasted?