被动语态（一）语态：英语的语态是通过动词形式的变化表现出来的。
主动语态表示主语是动作的执行者。
例如：Many people speak Chinese. 谓语：speak的动作是由主语many people来执行的。
被动语态表示主语是动作的承受者，即行为动作的对象。
例如：Chinese is spoken by many people. 主语English是动词speak的承受者。
（二）被动语态的构成人称、数和时态的变化是通过be的变化表现出来的。
现以speak为例说明被动语态在各种时态中的构成。
一般现在时：am／is／are＋spoken一般过去时：was／were＋spoken一般将来时：will／shall be＋spoken 现在进行时：am／is／are being＋spoken过去进行时：was/were being＋spoken现在完成时：have／has been＋spoken过去完成时：had been + spoken（三）主动语态变被动语态的方法（1）把主动语态的宾语变为被动语态的主语。
（2）把谓语变成被动结构（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。
例如：All the people laughed at him. →He was laughed at by all people.They make the bikes in the factory. →The bikes are made by them in the factory.He cut down a tree. → A tree was cut down by him.（四）含有情态动词的被动语态We can repair this watch in two days.→This watch can be repaired in two days.They should do it at once.→It should be done at once.（五）特殊情况（一感二听三让四看）1.He made the boy work for two hours yesterday.→The boy was made to work by him for two hours yesterday.2.Mother never lets me watch TV .→I am never let to watch TV by mother.常见的句型结构：It is(was)agreed(believed/decided/hoped/thought......）that......大家同意（相信、决定、希望、认为）...... It is(was)well known that......众所周知It is(was)said(reported，heard，told，suggested)that......据说(报道、听说、告知、建议......) 二、典型例题（）1．—Susan, why are you still here? They are all ready to start.–I’m sorry, but I _____ when to meet.A. don’t tellB. didn’t tellC. haven’t toldD. wasn’t told（）2．Many old houses around our school ____ next year and a large green area will appear.A. pull downB. will be pulled downC. will pull downD. are pulled down （）3．--- My watch ______. --- Don’t worry. Let’s go to the Lost & Found.A. is lostB. is brokenC. has foundD. has stopped （）4．---Did you go to Sam’s weekend party? ---No, I___________.A. am not invitedB. wasn’t invitedC. haven’t invitedD. didn’t invite（）5．-- How often ______ your school sports meeting ______?-- Once a year.A. does; holdB. was; holdC. is; heldD. did; hold（）6．The Olympic Games ___________every four years.A are heldB were held C．are holding D．will ho1d（）7．.Twelve-year-olds should not to drive in China.A. allowB. be allowC. allowedD. be allowed（）8．—Those eggs of different colors are very beautiful. —Yes, they ______ in Hangzhou.A. paintedB. were paintingC. were paintedD. had painted （）9．---Don’t litter the ground, boy ,Look at the sign:: ―Rubbish into the dustbin.‖ ---Sorry.A, has throw B, was throw C, must throw D, must be thrown （）10．He is made ______work for12 hours every day.A．work B working C．to work D. worked（）11. The girl was often heard happily in her room.A. singB. to singC. singingD. sings（）12. Usually computers _________to search the Internet.A. useB. are usingC. are usedD. used（）13. It is reported that more new teaching buildings _________ in our school in the next term.A. will be builtB. was builtC. has builtD. will build（）14. The sick boy _________ to hospital by the police yesterday.A. is takenB. was takenC. takesD. took（）15. --It’s difficult for the village children to cross the river for school.--I think a bridge _________ over the river.A. was builtB. is being builtC. has been builtD. should be built（）16. --David, turn off the TV________ no one is watching it.--But it ________ off already! The music is from the radio.A. so that, has been turnedB. when, has turnedC. if, has been turnedD. because, has turned（）17. Usually John to school in his father’s beautiful car.A. has takenB. is takingC. is takenD. has been taken（）18. Don’t put off today’s work for tomorrow. I mean, today’s work _________ today.A. may doB. must doC. may be doneD. must be done（）19.--Look, what an old palace! It looks so great!--Yeah, it ________ nearly 800 years ago.A. was buildingB. was builtC. has builtD. is built（）20. Don’t discuss the problems with your partner unless you _________ to do so.A. askB. are askedC. will askD. will be asked。