含情态动词的被动语态.doc

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1、含情态动词的被动语态【考点链接】1.—Someoftheplasticbagscan’tafterJune1.—Yes,peoplewilluseenvironmentalbagsinstead.A.useB.beuseC.beusedD.areused2.—ThereisalotofwindinNorthChina.—Well,moretreeseveryyeartostopthewind.A.mustbeplantedB.canplantedC.shouldplanted【结构】情态动词(should/can/must/may/could

2、等)+be+及物动词的过去分词【句式】1.否定句式：主语+情态动词+notbe+及物动词的过去分词。如：Thewordcouldn’tbeusedthisway.2.一般疑问句式：情态动词+主语+be+及物动词的过去分词。如：—Shouldtheletterbefinishedtoday?—Yes,itshould./No,itshouldn’t.【跟踪练习】根据要求完成句子。1.Teenagersshouldbeallowedtoplaywithfriendsatnight.(改为否定句)Teenagerstoplaywithfriends

3、atnight.2.Theflowersmustbewateredonceaday.(改为一般疑问句)theflowersonceaday?3.Shouldtheclassroombecleanedontime?(作肯定回答),.4.Parentsshouldallowchildrentochoosetheirclothes.(改为被动语态)Childrentochoosetheirclothes.5.Theyoungtreecanbeplantednow.(改为主动语态)Wetheyoungtreenow.各种时态的被动语态八大时态的被动语

4、态的构成： 1．一般现在时的被动语态构成：（am/is/are+done）如：  Iamaskedtostudyhard.我被请求努力学习。  Thisshirtiswashedonceaweek.这件T恤一周洗一次。  Thesesongsareusuallysungbyboys.这些歌曲通常是男生唱的。  2．一般过去时的被动语态构成：（was/weredone）如：  Thesoldierwaskilled,butthetrainwassaved.这位战士牺牲了，然而列车得救了。  Somenoteswerepasseduptothes

5、peaker.有人给讲演者递上来一些纸条。  3．一般将来时的被动语态构成：（shall/willbedone）如：  Weshallbeaskedalotofstrangequestions.我们将被问许多怪题。  MysonwillbesenttoschoolnextSeptember.来年九月我将送我儿子去读书。  4．过去将来时的被动语态构成：（should/wouldbedone）如：  Thenewswouldbesenttohimassoonasitarrived.消息一到就会转给他的。  Hetoldusthatthenewr

6、ailwaywouldbebuiltthenextyear.他告诉我新铁路将在明年修建。  5．现在完成时的被动语态构成：（has/havebeendone）如：  Theworkhasjustbeenfinished.工作刚刚结束。  The old rules have been done away with by us. 旧规章已经被我们废除了。  6．过去完成时的被动语态构成：（hadbeendone）如：  BylastDecemberthreeshipshadbeenbuiltbythem.到去年十二月底他们已建造了三艘船。  1

7、00tractorshadbeenproducedbytheendoflastyear.在去年年底前生产了100辆拖拉机。  7．现在进行时的被动语态构成：（am/is/arebeingdone）如：  The bridge is being repaired. 桥梁正在修复中。Thenewlibraryisbeingbuiltbytheworkers.新的图书馆正在被工人们建设中。  8．过去进行时的被动语态构成：（was/werebeingdone）如：  AmeetingwasbeingheldwhenIwasthere.我在时，会议在

8、开着。  Thecollegewasbeingbuiltatthistimelastyear.去年这个时候这所大学正在建设中。