新目标九年级英语unit3被动语态课件.ppt

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1、被动语态被动语态ZhangheSchoolYangYongguangThePassiveVoice1.Teenagersshouldbeallowedtochoosetheirownclothes.2.Annaisallowedtowearherownclothes.4.Iamnotallowedtogooutonschoolnights.3.Sixteen-year-oldsshouldbeallowedtodrive5.RiceisplantedinSouthChina.语态：表示主语和谓语动词之间的关系。英语有两种语态

2、，即主动语态和被动语态。主动语态：表示主语是动作的执行者。被动语态：表示主语是动作的承受者。如：ManystudentsstudyEnglish.(主动语态)Englishisstudiedbymanystudents.(被动语态)语态助动词be有人称、数的变化,其变化规则与be作为连系动词时一样。如：Thedeskismadeofwood.Thedesksaremadeofwood.Heisaskedaquestionbytheteacher.被动语态的结构助动词be+及物动词的过去分词不同的时态有不同的被动语态结构1.一

3、般现在时的被动语态结构：waterwateredwatereduseusedusedstudystudiedstudiedstopstoppedstoppeddodiddonerideroderiddenForexamplebymanystudents.主动语态变被动语态的方法1.ManystudentsstudyEnglish.Englishisstudied2.Theymakeshoesinthatfactory.Shoesaremadebytheminthatfactory.主动语态变被动语态的方法1.把主动语态的宾语

4、变为被动语态的主语。2.把主动语态的谓语变为被动语态的谓语。3.把主动语态的主语变为被动语态的by短语。（①by短语可以省。②by短语后跟代词的宾格。）bytheteacher.3.Theteacheroftenaskshimquestions.Heisaskedquestions1.找宾语----即动作的承受者Theymakeshoesinthatfactory.Shoes2.判断宾语的单复数----即be动词的单复数.aremade3.判断动词的时态----即be动词的时态.4.修改谓语的形式----即原句动词改为过去分

5、词5.修改原句的主语----即by+宾语（原主语）.bythem.主变被解题步骤主变宾,宾变主,谓动bedone时不变,人称、数、格随着变Shewaterstheflowerseveryday.TheflowersWhatdoesshedoeveryday?everyday.arewateredbyherTheydotheirhomeworkafterschool.Theirhomeworkisdonebythemafterschool.Heplaysbasketballeveryweek.Basketballisplaye

6、dbyhimeveryweek.TheyplayfootballonSunday.Lucydoesthehomeworkintheevening.Theyoftenusecomputersinclass.WemakethesemachinesinBeijing.FootballisplayedbythemonSunday.ThehomeworkisdonebyLucyintheevening.Computersareoftenusedbytheminclass.ThesemachinesaremadeinBeijing.Pr

7、actice1.Theyboughttencomputerslastterm．bythemlastterm.2.一般过去时的被动语态结构：was/were+过去分词lastyear.2.Weplantedmanytreeslastyear.ManytreeswereplantedTencomputerswerebought3.Iboughtacomputerlastterm．Acomputerwasbought(byme)lastterm.Thestudentsplantedmanytreesyesterday.Manytr

8、eeswereplantedbythestudentsyesterday.Theybuiltthetallbuildinglastyear.Hetookgoodcareofhislittlebrotheryesterday.Wecleanedourclassroomjustnow.They