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被动语态一、语态概述英语的语态是通过动词形式的变化表现出来的。英语中有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者。巧记为：主动、主动、主去动。例如：ManypeoplespeakEnglish.谓语：speak的动作是由主语manypeople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。巧记为：被动、被动、主被动。例如：Englishisspokenbymanypeople.主语English是动词speak的承受者。WeVisitedthatfactorylastsummer主动语态主语谓语宾语状语Thatfactorywasvisitedbyuslastsummer被动语态主语谓语宾语状语二、被动语态的构成被动语态由“助动词be＋及物动词的过去分词”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teach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＋taught一般过去时：was／were＋taught一般将来时：will／shallbe＋taught现在进行时：am／is／arebeing＋taught过去进行时：have／hasbeen＋taught现在完成时：have／hasbeen＋taught歌诀是：被动语态be字变，过去分词跟后面。三、被动语态的用法(1)不知道或没有必要说明动作的执行者是谁。例如：Somenewcomputerswerestolenlastnight.一些新电脑在昨晚被盗了。(不知道电脑是谁偷的)Thisbookwaspublishedin1981.这本书出版于1981年。(2)强调动作的承受者，而不强调动作的执行者。例如：thewindowwasbrokenbyMike.窗户是迈克打破的。Thisbookwaswrittenbyhim.这本书是他写的。Eighthoursperdayforsleepmustbeguaranteed.每天8小时睡眠必须得到保证。歌诀：谁做的动作不知道，说出谁做的没有必要；动作承受者需强调，被动语态运用到。四、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：WeVisitedthatfactorylastsummer主动语态主语谓语宾语状语Thatfactorywasvisitedbyuslastsummer被动语态主语谓语宾语状语歌诀是：宾变主，主变宾，by字短语后面跟。谓语动词变被动，be后“过分”来使用。五、被动语态的特殊结构：1、含有情态动词的主动句变成被动句时，由“情态动词＋be＋过去分词”构成，原来带to的情态动词变成被动语态后“to”仍要保留。歌诀是：情态动词变动，情态加be加“过分”，原来带to要保留。例如：Wecanrepairthiswatchintwodays.Thiswatchcanberepairedintwodays.2、有些动词可以有两个宾语，在用于被动结构时，可以把主动结构中的一个宾语变为主语，另一宾语仍然保留在谓语后面。通常变为主语的是间接宾语。例Hismothergavehimapresentforhisbirthday.可改为Hewasgivenapresentbyhismotherforhisbirthday.口诀：如遇双宾语，最好变间宾。如若变直宾，bedone后加to(或for)3、在使役动词have,make,get以及感官动词see,watch,notice,hear,feel,observe等后面不定式作宾语补语时，在主动结构中不定式to要省略，但变为被动结构时，要加to。例Someonesawastrangerwalkintothebuilding.可改为Astrangerwasseentowalkintothebuilding.口诀：感使动词真叫怪，to来to去记心怀，主动语态to离去，被动语态to回来。4、有些相当于及物动词的动词词组，如“动词＋介词”，“动词＋副词”等，也可以用于被动结构，但要把它们看作一个整体，不能分开。其中的介词或副词也不能省略。例ThemeetingistobeputofftillFriday.5、在need，want，require,bear等词的后面，动名词用主动形式表示被动意义，其含义相当于动词不定式的被动形式。例Thehouseneedsrepairing（toberepaired）．这房子需要修理。被动语态练习题()1ThePeople'sRepublicofChina___onOctober1,1949.A.foundB.wasfoundedC.isfoundedD.wasfound()2English____inCanada.A.speaksB.arespokenC.isspeakingD.isspoken()3ThisEnglishsong___bythegirlsafterclass.A.oftensingsB.oftensangC.isoftensangD.isoftensung()4Thiskindofcar___inJapan.A,makesB.madeC.ismakingD.ismade()5Newcomputers___allovertheworld.A.isusedB.areusingC.areusedD.haveused()6Ourroommust___clean.A.keepB.bekeptC.tobekeptD.tokeep()7-I'dliketobuythatcoat.-I'msorry.___.A.itsoldB.it'ssellingC.It'sbeensoldD.ithadbeensold()8Anewhouse___atthecorneroftheroad.A.isbuildingB.isbeingbuiltC.beenbuiltD.bebuilding()9Thekey___onthetablewhenIleave.A.wasleftB.willbeleftC.isleftD.hasbeenleft()10Doctors___ineverypartoftheworld.A.needB.areneedingC.areneededD.willneed()11Hisnewbook___nextmonth.A.willbepublishedB.ispublishingC.isbeingpublishedD.hasbeenpublished()12Japanese___ineverycountry.A.isnotspokenB.arespokenC.isspeakingD.isnotspeaking()13Thesepapers___yet.A.havenotwrittenB.havenotbeenwrittenC.hasnotwrittenD.hasnotbeenwritten()14Thesportsmeet___behelduntilnextweek.A.didn'tB.won'tC.isn'tD.doesn't()15-Myshoesarewornout.A.Can'ttheybemended?B.Letmehavealookatit.C.Howmuchdotheycost?D.Can'ttheymended?()16___thewatchbeenrepairedyet?Ibadlyneedit.A.DoesB.HasC.IsD.Are()17___thesedesksbeneeded?A.WillB.AreC.HasD.Do()18Why___totalkaboutityesterday?A.didn'tameetingholdB.wasn'tameetingheldC.wasn'theldameetingD.ameetingwasn'theld()19Whowasthebook___?A.writeB.wroteC.writtenD.writtenby()20Where___theseboxesA.wasB.wereC.isD.am()21Theflowers___often.A.mustbewaterB.mustbewateredC.mustwateredD.mustwater()22Thebooksmay___fortwoweeks.A.bekeptB.beborrowedC.keepD.borrow()23Thebrokenbike____herebyMrSmith.A.canmendB.canmendedC.canbemendD.canbemended()24Theoldbridgeinmyhometown___nextmonth.A.isgoingtoberebuiltB.willrebuiltC.aregoingtoberebuiltD.aregoingtorebuilt()25Theplay___atthetheatrenextSunday.A.isgoingtobeshownB.willshownC.willshowD.isshown()26Theoldstonebridge___nextweek.A.isgoingtoberebuiltB.willberebuildC.aregoingtoberebuiltD.willrebuild()27Nowthesemagazines___inthelibraryforalongtime.A.havekeptB.arekeepingC.havebeenkeepingD.havebeenkept()28Thepot___for___hotwater.A.used;keepingB.wasused;keepingC.isused;tokeepD.areused;keep()29Tea___inthesouthofChina.A.growsB.isgrownC.weregrownD.willgrow()30Thebridges___twoyearsago.A.isbuiltB.builtC.werebuiltD.wasbuilt()31Wetclothesareoften___upnearafireinrainyweather.A.hangB.hangedC.hangingD.hung()32Theriversmellsterrible.Peoplemust___dirtythingsintoit.A.bestoppedtothrowB.bestoppedfromthrowingC.stoptothrowD.stopfromthrowing()33Theteapot___water.A.isfilledwithB.filledofC.fullingofD.filled()34Oldpeoplemustbelookedafterwelland___politely.A.speaktoB.spokenC.speakD.spokento()35Oldpeoplemust___.A.lookafterwellB.belookedwellafterC.lookedwellafterD.belookedafterwell()36Newly-bornbabies___inhospital.A.aretakengoodcareB.aretakengoodcareofC.takegoodcareofD.takegoodcare()37Theywere___atthesuddennoise.A.frighteningB.frightenedC.frightenD.frightens()38Thesewalls___stone.A.aremadeofB.madeofC.aremadeintoD.