初中被动语态复习

课件26张PPT。九年级上册英语总复习 被动语态
The passive Voice
Made by Liang Xiao Bing 本节课复习目标:
能够更好地掌握被动语态的构成和一般现在时 ，一般过去时 以及一般现在时带有情态动词的被动语态 的用法。

复习重点：被动语态的构成。
复习难点：被动语态的运用。My room ____ ________(by me) every day.
房间每天被（我）打扫。1. 一般现在时的被动语态I clean my room every day.
我每天打扫房间。is cleanedPeople in Australia speak English. English is spoken (by people) in Australia.Practice :构成：主语+be (am/ is / are ) +过去分词They play football on Sunday.
They often use computers in class.
We make these machines in Beijing.
Football is played by them on Sunday.Computers are often used by them in class.These machines are made in Beijing.
She washed her clothes yesterday.
她昨天洗了她的衣服。2.一般过去时的被动语态：Her clothes were washed (by her) yesterday.
她的衣服昨天被(她)洗了。 Mr. Henry heard a strange noise last night.A strange noise last night (by Mr. Henry).Practice :was heard 构成：主语+ was / were +过去分词1.They built the tall building last year.
2. We cleaned our classroom just now.
3.They used this room for resting.
The tall building was built by them last year.Our classroom was cleaned by us just now.This room was used for resting by them.3. 情态动词的被动语态：
You can pass the exam if you study hard.
如果你努力学习，你就能通过考试。The exam can be passed (by you) if you study hard.
如果你努力学习，考试就能被（你）通过。People may catch fish in the river.Practice :Fish may be caught in the river (by people).构成：主语+情态动词+ be +过去分词
1.He can take care of the baby.
2.Lucy may draw the pictures.
3.You must turn off the lights.
4.They should learn English well. The baby ______________ care of by him.The picture ______________by Lucy.The lights __________________by you.English ______________well by them
may be drawncan be takenmust be turned offshould be learned
Conclusion:一般现在时—— am／is ／ are + vt.p.p.
一般过去时—— was／were +vt.p.p. 情态动词—— aux.v. (must／can／could／may…+ be + vt.p.p.)被动语态的构成：be +vt.p.p.被动语态：主语是动作的承受者 。 当我们不知道谁是动作的执行者，或者没有必要指出谁是动作的执行者时，或者只需强调动作的承受者时，要用被动语态。
waterwatered watereduseused usedstudy studied studiedstop stopped stoppeddo did doneride rode riddenFor example
动词原形 过去式 过去分词规则动词过去分词的构成形式如下：smokeplantcarry find found found makemade made take took takenbuy bought boughtsing sang sungplanted plantedsmoked smokedcarried carriedstopstopped stopped动词原形 过去式 过去分词let's have a tryHe plays basketball every week. Basketball is played by him every week.Zhengzhou
Knives are used for cutting thingsknives
cutting thingsKnives are made in zhengzhou.The Great Wall was built by Chinese people many years ago.Chinese people built the Great Wall many years ago. He can carry the basket. The basket can be carried by him.1.People use knives for cutting things.
Knives ______ ______ for cutting things.
2.The students clean the windows of their classroom twice a month.
The windows of their classroom______ _______ twice a month. are usedarecleaned(变被动语态）七嘴八舌3.I found the ticket on the floor.
______ ______ ______ ______ on the floor.
4.I told her to return the book in time.
She ______ _______ to return the book in time.The ticket was found was told5. Last year we built a library in our
school.
A library _______ _______ in our school last year.
6.Now people can use computers to help them.
Now computers _______ ______ ______ to help them. was built can be used7. Did you plant many trees at this time last year?
_______ ______ _______ _______ at this time last time?
8.Must we finish our work today?
_______ our work______ _______ today?Were many trees plantedMust be finishedFill in the blanks:
Paper ( invent)_______________ in A.D.105 by Cai Lun in China. It is an important part of our everyday lives, but few people ever think about how it (make) ____________.Today most paper comes from trees. However, with the concern for the environment (考虑到环境) , more and more paper (produce) ____________from recycled paper products. Since paper products are of different qualities, they first(sort分类)____________before they (recycle)_____________.The sorted material (put) _____________into a huge machine. was invented is made is produced are sorted are recycled is putExercises：把下列句子变被动语态
1.Many people speak English.
2.People used knives for cutting things.
3.We can use the box as a table.
4.We should clean the classroom every day.
5.She will repair the bike tomorrow.
See you Thank you!