被动语态2

课件21张PPT。The passive voice被动语态A recorder is used in our English class every day. playoftenFootball is played all over the world.A camera is used for taking photos.rob yesterdayA man-made satellite was sent up into space last year.A bank was robbed yesterday.must
plantThe tree must be planted
on the ground.The ground will be covered with trees in a few years’ time. send to right nowThey will be sent to the hospital right now.A talk will be given soon.digThe earth is being dug now.The food has been eaten up already.Football is played all over the world.A camera is used for taking photos. A bank was robbed yesterday.A man-made satellite was sent up into space last year.The tree must be planted on the ground.
The ground will be covered with trees in a few years’ time. They will be sent to the hospital right now.A talk will be given soon.The earth is being dug now.The food has been eaten up already.Look and find out the similarities (相同点):Conclusion:（一）一般现在时—— am／is ／ are + vt.p.p.
一般过去时—— was／were +vt.p.p. 一般将来时—— will be／be going to be + vt.p.p. 情态动词—— aux.v. (must／can／could／may…+ be + vt.p.p.)现在进行时—— be(am、is、are)+being +vt.p.p.现在完成时—— have／has +been+ 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。
Turn the following sentences into the passive voice: 1. Many people speak English. English 2. He bought me a new bike yesterday. I A new bike 3. The boss made him do the heavy work in the old days. He is spokenby many people.was boughta new bike yesterday.was bought yesterday.was made the heavy work in the old days.for meto doThe composition must be handed in after class.
Conclusion:主动语态如何改成被动语态？1. 主动语态的宾语改成被动语态的主语。2. 主动语态的谓语动词改成被动语态的谓语动词。do3. 注意保持时态和人称的一致。 4. 带双宾的谓语动词有两种改法。当把直接宾语改成主语时，谓语动词后必须加适当的介词: to for.如：givebe given to 此类动词还有：pass show send… 再如：buybe bought for此类动词还有：make draw cook mend…5. 一些动词不定式在主动语态中省略to作宾语补足语，改成被动语态时，to必须还原。（二）be done注:1. 不及物动词（vi.)不用被动语态。如:happen、take place 、appear、disappear…e.g. A traffic accident ____________(happen) just now.happened2. 连系动词（Link.v.)不用被动语态。如：be、look、seem、 feel、
sound、smell、taste、get、turn、become… e.g. Peking Opera _________ (sound) beautiful.sounds 3. 当此动词表示事物的自然属性的时候，不用被动语态 。e.g. The pen __________(write) very fast.writesThis kind of sweater _______(sell) well. sellsMultiple Choice:1. ( ) If the work ________,you can go and play games.
A. finished B. has finished C. will be finished D. is finished 2. ( ) It was raining heavily outside, the children were made ______
in the classroom.
4. ( ) To make our city more beautiful, rubbish ______ into the river.
A. needn’t be thrown B. mustn’t be thrown
C. can’t throw D. may not throw5. ( ) I like my bike. It ________ very well.
A. rides B. is riding C. is ridden D. has riddenDBBA 3. ( ) Kate _______ the letter before her mother came into her bedroom.A. has written B. was written C. had written D. is writing A. stay B. to stay C. staying D. stayedC6. ( ) —I won’t come to the party unless Tom ______, too.
—You mean if Tom comes ,you’ll come.
8. ( ) The children must _______.
9. ( ) The woman still doesn’t know what _______ in her hometown

DDBA. will invite B. invites C. invited D. is invited7. ( ) Everyone who heard Mr. Green’s story _____________ it.A. laughed at B. was laughed C. laughed D. was laughed atAA. happens B. happened C. will happen D. was happened while he was away.A. look after B. be taken good care C. look the same D. be taken good care of10. ( ) — I saw you were on foot this morning.
—Yes. My bike ___________. A. is mending B. is being mended C. is mended D. is being mendingB Fill in the blanks using right forms:1. All the students __________(ask) to bring a kite with them last Sunday.2. Are many ways _______(try) to stop people from cutting down so many trees?3. —What are on show in the museum? —Some photos _________(take) by American children.4. This coat _________(wash) well.9. Have you found your necklace ________(偷) last week?6. I’m often _________(警告）not to copy others’ homework.7. He couldn’t explain why dinosaurs ___________ (消失).8. I’ll have my bike __________________(修理) tomorrow.5. Must the old people ____________(speak) to politely?10. The PRC was _________(成立) on October 1, 1949.were asked triedtakenwashesbe spokenwarneddisappearedmended／repairedstolenfoundedMake dialogues or short passages accroding to the following information(using the passive voice as much as possible)：
Topic:1. what when where dialogue2.passage
To make our school more beautiful, what things must∕mustn’t be done?must: pick up throw collect plant growmustn’t: throw draw use spit cut down………Reading comprehension: Now scientists are trying to turn deserts into good land again. They want to bring water to the deserts, so people can live and grow food there. However, more and more land is becoming the deserts. Why is this happening? There are two reasons—land and wood. In many places the trees have been cut down because the land was needed for people. In other parts, the trees are cut down because their wood is wanted. But many people don’t know that in most places the trees won’t be replaced（取代）. The soil in the forests is very thin, but it is protected by the trees. When the trees are cut down, the soil is washed away by the rain or blown away by the wind. Soon nothing can grow on it. The land becomes a desert.
Who is to blame（应负责、责备）for this? The answer is easy: all of us. There are just too many people in the world. The world’s population is now six billion. You might say: We don’t cut down trees. Yes, but just look around. You’re probably using its products（产品）right now. ( ) 1. Scientists are trying to bring __________ to the deserts.
A. food B. planes C. water D. animals( ) 2. The _________ are important to protect the soil.
A. rain B. trees C. land D. wood( ) 3. In most places after the trees are cut down, ____________.
A. they can grow again B. they will disappear forever
C. new trees can grow better D. new forests will appear( ) 4. The reason for the bad cycle（循环）is that _________.
A. people need more land to grow food
B. wood is needed for building houses
C. there are too many rich people on the land
D. there are too many people on the earthCBBDComplete the passage: A great deal of water is needed in large cities. Some cities pump(抽水）water from wells. Some cities g____ water from lakes or rivers n______.But some cities have to bring water from lakes or rivers many miles away.Water is usually b_________ to a city from a place higher than the city itself. When water is f________ only in the lower place, it must be pumped up to the city. Then it is s________ to each home. Dams(水坝) are often b_______ in a river to keep the water fromflowing away. Then a new lake is formed. The city knows how muchwater will be n________ and allows the extra(额外的) water to flow below the dam. I ___ this way, the city stores water for its use.There is usually a b_________ near the dam. Much important work is d_______ there. For example, the water is tasted before it is piped to the city.etearbyroughtoundentuilteedednuildingone Fill in the blanks with the verbs using right tenses and voices:1. Large numbers of plastic bags ___________(use) in the supermarkets every day.2. _____ our country ____(send) up another man-made satellite last year? 3. Must the old people ____________(speak) to politely?4. Her grandma was still alive when he _________(take) to the hospital.5. English __________(speak) in many counties, but the Chinese ______ (speak) their own language.6. Three quarters of the world’s books______________(write) in English.7. This kind of sweater ___________(sell) well.8. _________ Lesson 50 ___________(teach) next week?are usedDidsendbe spokenwas takenis spokenspeakare writtensellsWillbe taughtWriting:你们学校附近有一个大图书馆，馆内有各种各样的书，请你将这个图书馆的要求向你的同学作一介绍，以便他们去那儿看书时能遵守规则。不要把包带进图书馆。
2. 看书时保持安静。一次可借四本书，不能将书转借给别人，
4. 图书馆每天早晨8:00开门，必须在下午6:00前要按时还书。离开图书馆。要求：用英文写一篇60—80词左右的短文。