英文各种从句详解(共5页).doc

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1、精选优质文档-倾情为你奉上今天起为大家介绍一下英语中几大从句的用法以及其相关内容，如果总结地不够详尽的，还请各位朋友补充说明，谢谢。1.主语从句1）主语从句可直接位于主语的位置，如果从句较长，谓语又较短，可用it作形式主语，而将从句放在句末。常见的句型有：*Itisafactapityaquestiongoodnewsthat.*Itseemsappearshappenedhasturnedoutthat.*Itisclearimportantlikelypossiblethat.*Itissaidreportedestimatedhasbeenprovedthat.Itissaidthatc

2、omicbookscreateaconnectionbetweenpeopleofthesamegeneration.Itseemsthattheperformanceisveryuseful.2)what引导的主语从句表示“.的东西时”，一般不用it作形式主语。Whatwelackisexperience.3)what,who,when,why,whether等词含有各自的疑问意义，但它们引导的主语从句，都用陈述语序。Howtheplanistobecarriedoutshouldbediscussedagain.IdidknowwhyIfeltlikecrying.Tobecontinue

3、d:宾语从2.宾语从句1）宾语从句可位于及物动词、介词和某些形容词后。连词that常可省略。介词后一般接疑问词引导的宾语从句。inthat(因为),exceptthat(除了),butthat(只是）已构成固定搭配，其他介词后一般不接that引导的宾语从句。*IpromisedthatIwouldchangethesituation.*AllthisisdifferentfromwhatAmericanyoungpeoplewouldsayaboutfriendship.*Heiscertainthatwatchingsomuchtelevisionisnotgoodforchildren.*

4、Thisarticleiswell-writtenexceptthatitisabittoolong.2)宾语从句后如有宾补，要用形式宾语it来代替，而把宾语从句移至宾补之后。Hehasmadeitclearthathewouldnotchangehismind.3)在think,believe,suppose,expect等动词后的宾语从句中，如果谓语是否定的，一般将否定词移至主句谓语上，宾语从句则变成肯定形式。Hedidntthinkthatthemoneywaswellspent.Tobecontinued:表语从句3.表语从句表语从句出现在结构为“主语+系动词+表语从句”的句子中。表语

5、从句除可用that,what,when,why,whether,how等引导外，还可由because,asif(though)等引导。that常可省略。如主句主语为reason,只能用that引导表语从句，不可用because.PerhapsthemostimportantthingtorememberisthatthereisnoonecommontypeoflifeinAmerica.Thereasonwhysomanypeoplediedthereisthattherewerenotenoughfoodsupplies.Itlooksasifsuccessfulinternational

6、culturalcommunicationwillmaketheworldsmaller.Tobecontinued:同位语从句4.同位语从句同位语从句用于对前面出现的名词作进一步说明，一般用连词that引导，由于先行名词的意义不同，也可用whether,who,when,where,what,why,how等引导。常见的先行名词有fact,idea,belief,news,hope,conclusion,evidence,suggestion,order,problem,report,decision.有时由于谓语较短，将同位语从句位于谓语之后。Shefinallymadethedecisi

7、onthatshewouldjointhefashionshow.IhadnoideahowmanybooksIcouldborrowatatime.Thenewscamethattheirteamhadwonthechampionship.Tobecontinued:定语从句5.定语从句定语从句所修饰的先行词可以是名词或代词，也可以是一个句子。定语从句通常位于先行词之后，由关系代词或关系副词引导。*限制性定语从句限制性定语从句修饰先行词，对先行词起修饰作用，紧接先行词之后，无逗号，若省去，原句意思不完整。引导定语从句的关系代词有who,whom,whose,which,that等。who,w

8、hom,whose用于指人，whose有时也可指物，相当于ofwhich；which用于指物；that既可指人也可指物，但只用于限制性定语从句中。关系代词除了引导定语从句，替代先行词外，还在从句中担任主语、宾语、定语等。ThecomputersandcableswhichmakeuptheInternetareownedbypeopleandorganizations.Thosewholivealoneorwhoaresickmayhavetroubleingettingclosetootherpeople.Thegirlwhoseparentsdiedinanaccidentisliving

9、withhergrandmother.1)当先行词是all,anything,everything,something,nothing等不定代词或先行词前有first,last,any,few,much,some,no,only以及形容词最高级修饰时，只能用关系代词that引导从句。ThatisallthatIveheardfromhim.HesthefirstpersonthatImgoingtointerviewthisafternoon.2)关系代词的省略在从句中作宾语的关系代词常可省略。关系代词紧跟介词，作介词宾语时不可用that，只可用which或whom引导从句，并且不可省略，但当

10、介词位于宾语从句句末时，作为介词宾语的关系代词仍可用that，也可省略。Thisisoneofthosethingswithwhichwehavetoputup.Thisisoneofthosethings(whichthat)wehavetoputupwith.3)引导定语从句的关系副词有when,where,why等。关系副词在从句中作状语，意义上相当于一个“介词+which”的结构。Evenincomicbookswhere(=inwhich)therearenowords,thestoriesarefullyexpressedthroughthedrawings.Nooneknowst

11、hereasonwhy(=forwhich)hewassoangrythatday.5.定语从句*非限制性定语从句非限制性定语从句既可修饰先行词，也可修饰整个主句，起补充说明作用，与主句之间有逗号隔开，若省去，原句意思不受影响。不可用that引导非限制性定语从句。关系词不可省略。Everyobjecthasagravitationalpull,whichisratherlikemagnetism.*“介词+whichwhomwhose”引导的定语从句“介词+whichwhomwhose”可引导限制性定语从句，也可引导非限制性定语从句，该结构中介词的选择取决于从句谓语动词的固定搭配，或先行词的习

12、惯搭配。ThisisthecomputeronwhichhespentallhissavingsItiswrittenbyapersonwithwhomweareallfamiliar.*as引导的定语从句as引导的定语从句主要用于“such.as”及“thesame.as”的结构中，代替先行词是人或物的名词。as引导非限制性定语从句时，代替整个主句，从句可位于主句之前、之后或中间。Thesearenotsuchproblemsascanbeeasilysolved.(as代替先行词problems)Asismentionedabove,nosinglecompanyorgroupcancon

13、trolwhathappensontheInternet.(as代替主语)Tobecontinued:状语从句6.状语从句*时间状语从句引导时间状语从句的从属连词和词组有：1）when,whenever,while,as,after,before,since,till,until,once等。Wehavelearntquitealotaboutitsincewecamehere.2)assoonas,hardly(scarcely).when,nosooner.than,each(every)time,themoment,immediately(that)等。AssoonasIsentane-

14、mailmessage,Ireceivedpositiveresponses.Themomentheheardthegoodnews,hejumpedwithjoy.*地点状语从句引导地点状语从句的连词是where,wherever.Wherevershewent,shetookherlittledaughterwithher.*原因、结果和目的状语从句1）引导原因状语从句的从属连词有：because,as,since,now(that),seeingthat,consideringthat,inthat等。Consideringthatheisafreshman,wemustsayheisd

15、oingwell.2)引导结果状语从句的连词有：so.that,such.that,sothat,that,so等。MickeyMouseissoattractivethatthechildrenarereluctanttoleave.3)引导目的状语从句的连词有：sothat,inorderthat,forfearthat,lest等，从句常使用may,might,can,could,would等情态动词。Wegotupearlythismorningsothatwecouldcatchthefirstbustotherailwaystation.*条件和让步状语从句1）引导条件状语从句的连

16、词和词组有if,unless,as(so)longas,onconditionthat,incase,provided(providing)that,supposing等。Aslongasyouhavetherightequipment,youcanuseatelephonelinetotransmitcomputerdata.2)引导让步状语从句的连词和词组有though,although,whether,eventhough,evenif,nomatterwhat(when,how.),whatever(whenever,wherever,however.)等。though,evenif等

17、引导状语从句可转换成含有as的部分倒装结构，具有强调意义。其结构为“形容词（副词、动词、名词）+as+主语+谓语”。Nomatterwhatyoumaysay,Iwouldnotchangemymind.Youngasheis,heisquiteexperiencedinthiswork.(=thoughheisyoung)Childasheis,hecanspeakEnglishfluently.(=thoughheisachild)*方式状语从句引导方式状语从句的连词有as,justas,asif,asthough等。asif,asthough引导的状语从句中，谓语动词常用虚拟语气，表示与事实相反。Theyoungmanmadetheexperimentjustastheteacherhadtaughthim.Everythingwentonasusualasifnothinghadhappened.专心-专注-专业