被动语态基本用法.doc

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1、被动语态基本用法定义：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。总的结构是：S+be+P.P（动词的过去分词）+by+人1.规则动词的过去分词的变化规则：1)一般情况在动词原形后加-ed2)以不发音e结尾的加-d3)以辅音加y结尾的，去y变i加-ed4)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-edwatch---watchedpractice---practicedstudy---studiedstop---stopped2.不规则动词的过去分词：Am/is/are----beenhave/has—had

2、do----done二各种时态的被动语态构成一般现在时：S+am/is/are+P.P一般过去时：S+was/were+P.P.现在进行时：S+am/is/are+being+P.P.过去进行时：S+was/were+being+P.P情态动词：S+can/may/must/should+be+P.P.一般将来时：S+will+be+P.P.现在完成时：S+have/has+been+P.P.把下列句子(变被动语态）1.Peopleuseknivesforcuttingthings.Knives____________forcuttingthings.2.Thestudentsclea

3、nthewindowsoftheirclassroomtwiceamonth.Thewindowsoftheirclassroom_____________twiceamonth.3.Ifoundtheticketonthefloor.________________________onthefloor.4.Itoldhertoreturnthebookintime.She_____________toreturnthebookintime.5.Hisdoctormadehimhaveonlytwomealsaday.He___________________________onlyt

4、womealsaday.6.Nowpeoplecanusecomputerstohelpthem.Nowcomputers___________________tohelpthem.7.Didyouplantmanytreesatthistimelastyear?___________________________atthistimelasttime?8.Mustwefinishourworktoday?_______ourwork_____________today?9.Theforeignfriendsgaveussomewonderfulstamps.1)___________

5、_________somewonderfulstamps.2)Somewonderfulstamps_____________________________.10.TheteacheraskedTomtoturnonthecomputer.Tom_______________toturnonthecomputer.11.Inthisfactorywomendomostofthework.Mostofthework_______________bywomeninthisfactory.12.Hecanmendthebikeintwodays.Thebike_______________

6、____intwodays.13.Youmusttakethismedicinethreetimesaday.Thismedicine______________________threetimesaday.14.ThestudentsstudyGermaninthisschool.German_______________bythestudentsinthisschool.选择()Theflowers____everyday,orthey’lldie.AmustwaterBcanbewateredCshouldwaterDmustbewatered()Manycomputerswil

7、l___toourschool.AbebringBbebroughtCbring