初中英语被动语态讲解及练习ppt

各种时态的被动语态构成
1）一般现在时：You are do this.
invited to
2）一般过去时：The story was told by her. 3）一般将来时：The problem will be discussed tomorrow.
4)情态动词：The rubbish can be put into the dustbin over there.
14.The students study German in this school. is studied by the German _______ ________ students in this school. 15.Do they often talk about this question?
宾(受动者)
in spring.
Trees
are planted byhim
in spring.
Tom will clean the room tomorrow.
主
谓
宾(受动者)
The room will be cleaned by Tom tomorrow.
His brother washes bowls every 宾(受动者) day. 主 谓
4.I told her to return the book in time.
was _______ told to return the book She ______ in time.
5. His doctor made him have only two meals a day. was _______ made _______ to have He ______ _______ only two meals a day. 6.Now people can use computers to help them. can ______ be Now computers _______ ______ used to help them.
talked Is ______ this question often _______ about _______ by them _______?
be allowed (allow) 1)Teenagers should _____ to go out at night.
was invented(invent) 2)The telephone _____ by Bell. spoken (speak) in China. 3) English is ____
Bowls are washed byhis brother every day.
(变被动语态）
1.People use knives for cutting things.
are ______ used for cutting Knives ______ things. 2.The students clean the windows of their classroom twice a month.
is made(make) in China. 4) The car ____
cleaned (clean) 5) The room must be _____ every day.
Most of the work _______ ________ is done by women in this factory.
12.He can mend the bike in two days. can be mended The bike ______ ______ _______ in two days. 13.You must take this medicine three times a day. must be This medicine _______ _______ taken three times a day. ________
am/is/are being done
现在进行时
现在完成时
have/has been done
情态动词的被动语态
情态动词+ be + done must be done/mustn’t be done should be done/ shouldn’t be done can be done/ can’t be done may be done/ might be done
在改写中应注意：
1.把原来的宾语提到前面作被动语态的 主语; 2.把动词变成“be + 过去分词”;
3.主动语态中的主语变为介词by的宾语。
Many people speak Chinese.
Chinese is spoken by many people.
改为被动语态
He
主
plants
谓
Hale Waihona Puke trees10.The teacher asked Tom to turn on the computer.
was ________ asked to turn on Tom _______ the computer.
11.In this factory women do most of the work.
The windows of their classroom______ are cleaned twice a month. _______
3.I found the ticket on the floor. The ______ ticket ______ was ______ found on the ______ floor.
Passive Voice
被动语态
英语动词有两种语态：主动语态和被动语态。 1.当我们不知道谁是动作的执行者, 2. 或者只需强调动作的承受者时，要用被动语态。 被动语态结构： be + 过去分词(PP) + (by …)
时态
被动语态结构
am/is/are done 一般现在时 表格：被动态基本结构 was/were done 一般过去时 一般将来时 (shall/will/be going to) be done