初中英语被动语态复习PPT课件

.,1,被动语态,Passivevoice,.,2,被动语态基本用法当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。,.,3,be+Vp.p(动词的过去分词）1)be动词可以随时态人称的变化而变化am/is/are+V(过去分词）was/were+V(过去分词）willbe+V(过去分词）情态动词+be+V(过去分词）,.,4,1.规则动词的过去分词：,1)一般情况在动词原形后加-ed,watch-watched,2)以不发音e结尾的加-d,practice-practiced,3)以辅音加y结尾的，去y变i加-ed,study-studied,4)以重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加-ed,stop-stopped,2.不规则动词的过去分词：,am,is,are,been,have,has,had,do,done,write,written,go,gone,.,5,Heplantstreesinspring.,主,谓,宾(受动者),Trees,areplanted,by,him,改为被动语态,inspring.,.,6,主动语态变被动语态口诀：宾语提前主语变，原主变宾by后见，时态人称be关键。,.,7,Tomwillcleantheroomtomorrow.,主,谓,宾(受动者),Theroom,willbecleaned,by,Tom,tomorrow.,.,8,Hisbrotherwashesbowlseveryday.,主,谓,宾(受动者),Bowls,arewashed,by,hisbrother,everyday.,.,9,1.Theymakeshoesinthatfactory.主语+及物动词+宾语,Shoesaremade(bythem)inthatfactory.一般现在时：S(主语）+am/is/are+过去分词,变为被动语态,.,10,2.Theyboughttencomputerslastterm,Tencomputerswerebought(bythem)lastterm.一般过去时：S+was/were+过去分词,.,11,3AmycantakegoodcareofGina,GinacanbetakengoodcareofbyAmy.情态动词：S+can/may/must/should+be+过去分词,.,12,各种时态的被动语态构成1）一般现在时：Youareinvitedtodothis.2）一般过去时：Thestorywastoldbyher.3）一般将来时：Theproblemwillbediscussedtomorrow.,看一看想一想,.,13,4)情态动词：Therubbishcanbeputintothedustbinoverthere.,.,14,.,15,各种时态的被动语态构成,一般现在时：一般过去时：情态动词：一般将来时：现在进行时：现在完成时：过去进行时：,S+am/is/are+P.PS+was/were+P.P.S+can/may/must/should+be+P.P.S+will+be+P.P.S+am/is/are+being+P.P.S+have/has+been+P.P.S+was/were+being+P.P.,.,16,何时使用被动语态呢？一、行为主体不明确，不必说出或者无法说出动作的执行者时。例如：Footballisplayedallovertheworld二、不易找到或根本就不可能找到动作的执行者时。例如：Mybikewasstolen我的自行车被盗了。,.,17,三、汉语中含有“据说”、“据悉”、“有人说”、“大家说”等时。例如：ItissaidthatonedayheclimbedtothetopofahouseandItwasreportedthathermotherdiedofSARS.众所周知Itiswellknownthat据推测说Itissupposedthat,.,18,四、汉语中含有“被”、“由”等词时。例如：TinaisaskedtocomebyPaulTina是被Paul叫来的。五、某些句子习惯上用被动语态。例如：HewasborninOctober，1989,.,19,1.Peopleuseknivesforcuttingthings.Knives_forcuttingthings.2.Thestudentscleanthewindowsoftheirclassroomtwiceamonth.Thewindowsoftheirclassroom_twiceamonth.,EXERCISES,areused,are,cleaned,(变被动语态）,.,20,3.Ifoundtheticketonthefloor._onthefloor.4.Itoldhertoreturnthebookintime.She_toreturnthebookintime.,Theticketwasfound,wastold,.,21,5.Hisdoctormadehimhaveonlytwomealsaday.He_onlytwomealsaday.6.Nowpeoplecanusecomputerstohelpthem.Nowcomputers_tohelpthem.,wasmadetohave,canbe,used,.,22,7.Didyouplantmanytreesatthistimelastyear?_atthistimelasttime?8.Mustwefinishourworktoday?_ourwork_today?,Weremanytreesplanted,Mustbefinished,.,23,9.Theforeignfriendsgaveussomewonderfulstamps.1)_somewonderfulstamps.2)Somewonderfulstamps_.,weweregiven,were,giventous,.,24,10.TheteacheraskedTomtoturnonthecomputer.Tom_toturnonthecomputer.11.Inthisfactorywomendomostofthework.Mostofthework_bywomeninthisfactory.,wasasked,isdone,.,25,12.Hecanmendthebikeintwodays.Thebike_intwodays.13.Youmusttakethismedicinethreetimesaday.Thismedicine_threetimesaday.,canbemended,mustbe,taken,.,26,14.ThestudentsstudyGermaninthisschool.German_bythestudentsinthisschool.15.Dotheyoftentalkaboutthisquestion?_thisquestionoften_about_?,isstudied,Is,talked,bythem,.,27,1)Teenagersshould_(allow)togooutatnight.2)Thetelephone_(invent)byBell.3)English_(speak)inChina.4)Thecar_(make)inChina.5)Theroommust_(clean)everyday.,beallowed,wasinvented,isspoken,ismade,becleaned,.,28,()Theflowers_everyday,ortheylldie.AmustwaterBcanbewateredCshouldwaterDmustbewatered()Manycomputerswill_toourschool.AbebringBbebroughtCbring,.,29,4.Theywillfinishtheworkintendays.,Theworkwillbefinished(bythem)intendays.一般将来时：S+will+be+过去分词,.,30,5.Someworkersarepaintingtheroomsnow,Theroomsarebeingpaintedbysomeworkersnow.现在进行时：S+am/is/are+being+过去分词,.,31,6Wehavemadetwentymorekeys,Twentymorekeyshavebeenmadebyus.现在完成时：S+have/has+been+过去分词,.,32,7Iwasdoingmyhomeworkat8:00lastnight,Myhomeworkwasbeingdone(byme)at8:00lastnight.过去进行时：S+wa