1、The passive voice,被动语态,A recorder is used in our English class every day.,use for,play,often,Football is played all over the world.,A camera is used for taking photos.,rob yesterday,A man-made satellite was sent up into space last year.,A bank was robbed yesterday.,must plant,The tree must be plante
2、d on the ground.,The ground will be covered with trees in a few years time.,send to,right now,a talk give soon,They will be sent to the hospital right now.,A talk will be given soon.,dig,The earth is being dug now.,The food has been eaten up already.,Football is played all over the world.,A camera i
3、s 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
4、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 amis are + vt.p.p.,一般过去时 waswere +vt.p.p.,一般将来时 will bebe going to be + vt.p.p.,情态动词 aux.v. (mustcancouldmay+ be + vt.p.p.),现在进行时 be(am、is、are)+being +vt.p.p.,现在完成时 havehas +been+ vt.p.p.,被动语
5、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 spoken,
6、by many people.,was bought,a new bike yesterday.,was bought,yesterday.,was made,the heavy work in the old days.,for me,to do,The 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。do,3. 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
7、适当的介词: to for.,如：give,be given to,此类动词还有：,pass show send,再如：,buy,be 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.,happened,2. 连系动词（Link.v.)不用被动语态。如
8、：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.,writes,This kind of sweater _(sell) well.,sells,Multiple Choice:,1. ( ) If the work _,you can go and play games.A. finished B. has finish
9、ed 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. neednt be thrown B. mustnt be thrownC. cant throw D. may not throw,5. ( ) I like my bike. It _ very well.A. rides
10、 B. is riding C. is ridden D. has ridden,D,B,B,A,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. stayed,C,6. ( ) I wont come to the party unless Tom _, too.You mean if Tom comes ,youll come.
11、,8. ( ) The children must _.,9. ( ) The woman still doesnt know what _ in her hometown,D,D,B,A. will invite B. invites C. invited D. is invited,7. ( ) Everyone who heard Mr. Greens story _ it.,A. laughed at B. was laughed C. laughed D. was laughed at,A,A. happens B. happened C. will happen D. was ha
12、ppened,while he was away.,A. look after B. be taken good care,C. look the same D. be taken good care of,10. ( ) I saw you were on foot this morning.,Yes. My bike _.,A. is mending B. is being mended,C. is mended D. is being mending,B,Fill in the blanks using right forms:,1. All the students _(ask) to
13、 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. Im often _(警告）not to copy others hom
14、ework.,7. He couldnt explain why dinosaurs _ (消失).,8. Ill 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,tried,taken,washes,be spoken,warned,disappeared,mendedrepaired,stolen,founded,Make dialogues or short passages accr
15、oding to the following information(using the passive voice as much as possible)：,Topic:,1.,what when where,dialogue,2.,passage,To make our school more beautiful, what things,mustmustnt be done?,must:,pick up throw collect plant grow,mustnt: throw draw use spit cut down,Reading comprehension:,Now sci
16、entists 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 reasonsland and wood. In many places the trees have been cut down becaus
17、e the land was needed for people. In other parts, the trees are cut down because their wood is wanted. But many people dont know that in most places the trees wont 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
18、 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 worlds population is now six billion. You might say: We dont cut down trees. Yes, but j
19、ust look around. Youre 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
20、 can grow again B. they will disappear foreverC. 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 foodB. wood is needed for building housesC. there are too many rich people on the land D. there are too many people
21、on the earth,C,B,B,D,Complete 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
22、 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 from,flowing away. Then a new lake is formed. The city knows how much,water will be n_ and allows the extra(额外的) water to
23、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.,et,earby,rought,ound,ent,uilt,eeded,n,uilding,one,Fill in the blanks with the verbs using right t
24、enses 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
25、, but the Chinese _,(speak) their own language.,6. Three quarters of the worlds books_(write) in English.,7. This kind of sweater _(sell) well.,8. _ Lesson 50 _(teach) next week?,are used,Did,send,be spoken,was taken,is spoken,speak,are written,sells,Will,be taught,Writing:,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6080词左右的短文。,
