初中英语被动语态讲解及练习.ppt

PassiveVoice被动语态 英语动词有两种语态 主动语态和被动语态 1 当我们不知道谁是动作的执行者 2 或者只需强调动作的承受者时 要用被动语态 被动语态结构 be 过去分词 PP by 表格 被动态基本结构 am is aredone was weredone shall will begoingto bedone have hasbeendone 情态动词的被动语态 情态动词 be donemustbedone mustn tbedoneshouldbedone shouldn tbedonecanbedone can tbedonemaybedone mightbedone 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 4 情态动词 Therubbishcanbeputintothedustbinoverthere 在改写中应注意 1 把原来的宾语提到前面作被动语态的主语 2 把动词变成 be 过去分词 3 主动语态中的主语变为介词by的宾语 ManypeoplespeakChinese Chineseisspokenbymanypeople Heplantstreesinspring 主 谓 宾 受动者 Trees areplanted by him 改为被动语态 inspring Tomwillcleantheroomtomorrow 主 谓 宾 受动者 Theroom willbecleaned by Tom tomorrow Hisbrotherwashesbowlseveryday 主 谓 宾 受动者 Bowls arewashed by hisbrother everyday 1 Peopleuseknivesforcuttingthings Knives forcuttingthings 2 Thestudentscleanthewindowsoftheirclassroomtwiceamonth Thewindowsoftheirclassroom twiceamonth EXERCISES areused are cleaned 变被动语态 3 Ifoundtheticketonthefloor onthefloor 4 Itoldhertoreturnthebookintime She toreturnthebookintime Theticketwasfound wastold 5 Hisdoctormadehimhaveonlytwomealsaday He onlytwomealsaday 6 Nowpeoplecanusecomputerstohelpthem Nowcomputers tohelpthem wasmadetohave canbe used 10 TheteacheraskedTomtoturnonthecomputer Tom toturnonthecomputer 11 Inthisfactorywomendomostofthework Mostofthework bywomeninthisfactory wasasked isdone 12 Hecanmendthebikeintwodays Thebike intwodays 13 Youmusttakethismedicinethreetimesaday Thismedicine threetimesaday canbemended mustbe taken 14 ThestudentsstudyGermaninthisschool German bythestudentsinthisschool 15 Dotheyoftentalkaboutthisquestion thisquestionoften about isstudied Is talked bythem 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 Oralpractice 主动句改被动句 Oralpractice 1 Changeeachsentenceintopassivevoice Acarknockedhimdownyesterday Thesetwokidsplanttreeseveryyear 3 Weshouldprotecttheearth 4 We llputontheplaynextSunday Hewasknockeddownbyacaryesterday Treesareplantedbythesetwokidseveryyear Theearthshouldbeprotectedbyus TheplaywillbeputonbyusnextSunday 几种特殊结构1 Myunclegavemeagiftonmybirthday 2 Weoftenhearhimplaytheguitar Agiftwasgiventomeonmybirthday Heisoftenheardtoplaytheguitar注意1 see watch hear notice feel make listento lookat等动词 短语后作宾语补语的不定式都不带to 但改成被动语态后必须带to Beseentodo bemadetodo beheardtodo bewatchedtodo Weshouldlookaftertheoldpeople Theoldpeopleshouldbelookedafterbyus 注意2 有些不及物动词加介词构成及物动词短语 如果变被动语态 不能把动词后的介词丢掉 注意3 主语 连系动词 表语的句子没有被动语态 Thefoodtastesdelicious 注意4 therebe结构没有被动语态 1 动词 表示主语的属性特征 副词 well badly easily smoothly 用主动式表被动义 read write sell wash clean wear lock open cook shut dry eat drink Thebooks well A weresoldB sellC havesoldD arebeingsoldThiskindofcloth easily A haswashedB waswashedC washesD iswashed B C 主动式表被动义 7 Didyouplantmanytreesatthistimelastyear atthistimelasttime 8 Mustwefinishourworktoday ourwork today Weremanytreesplanted Mustbefinished 9 Theforeignfriendsgaveussomewonderfulstamps 1 somewonderfulstamps 2 Somewonderfulstamps weweregiven were giventous 1 Themonkeywasseen offthetree A jumpB jumpsC jumpedD tojump 2 Ifsmalltrees theywillgrowupquickly A takegoodcareofB takegoodcareC aretakengoodcareofD aretakengoodcare