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1、状语从句引导词 状语从句种类常用连接词特殊连接词时间状语从句When,while,as,before,aftersince,till,until,assoonas1.一些时间名词：themoment,theinstant,theminute,theday,nexttime,everytime2.一些副词：instantly,immediately,directly3.固定搭配的连词：nosooner---than,hardly---when,scarcely---when.地点状语从句WhereWherever,an
2、ywhere,everywhere原因状语从句Because,as,for,sinceSeeingthat,consideringthat,nowthat,giventhat,inthat,inasmuchas,insomuchas目的状语从句Sothat,inorderthat,that，Lest,forfearthat,incase,inthehopethat,onpurposethat,forthepurposethat,totheendthat结果状语从句So-that,sothat,such---thatS
3、uchthat,tothedegreethat,totheextentthat,tosuchadegreethat,tosuchanextentthat条件状语从句If,unlessSuppose,supposing,providing,provided(关注：supposed,provide不用作条件从句的连词）onconditionthat,as/solongas，onlyif让步状语从句Although,though,eventhough,evenifWhile(一般用在句首),as(用于倒装结构),inspi
4、teofthefactthat，whatever,whoever,whichever,however,whenever,wherever,whether---or---,asadj.as+主谓结构用在句首比较状语从句as(同级比较),than(不同程度的比较)Themore-,themore-;justas-,so-;AistoBwhat/asCistoD;nomore--than;notAsomuchasB/notsomuchAasB方式状语从句as,asif，how， theway状语从句的简化♠状语从句的省略状
5、语从句同时具备下列两个条件:①主句和从句的主语一致，或从句主语为it；②从句主要动词是be的某种形式。从句中的主语和be动词常可省略。例如：When(thelabis)completed,thelabwillbeopentothepublic.He’llgototheseasideforhisholidayif(itis)possible.另外，比较状语从句经常省略。例如：I’mtallerthanhe(istall).Thehigherthetemperature(is),thegreaterthepressure
6、(is).状语从句的"简化"现象常存在于以下五种状语从句中:①由if,unless等引导的条件状语从句;②由although,though,evenif/though等引导的让步状语从句;③由when,while,as,before,after,until/till等引导的时间状语从句;④由as,asif等引导的方式状语从句;⑤由as,than等引导的比较状语从句。(1)当状语从句的主语是it,且谓语动词是be时,it和be要完全简化掉。例如:If(itis)possible,hewillhelpyououtofth
7、edifficulty.Youmustattendthemeetingunless(itis)inconvenienttoyou.(2)当状语从句的主语和主句的主语一致时,从句可以将主语和be动词简化掉。a.连词+形容词As(hewas)young,helearnedhowtorideabike.Whenever(sheis)free,sheoftengoesshopping.Workhardwhen(youare)young,oryou'llregret.少壮不努力,老大徒伤悲。b.连词+名词While(hewas
8、)ayoungboy,hewasalwaysreadytohelpothers.Although(hewas)afarmer,nowheisafamousdirector.c.连词+现在分词As(shewas)walkingalongtheriverbank,shewassingingapopsong.Although(heis)doinghi
