状语从句讲解及练习-(2)VIP免费

状语从句考点导航1．掌握九种状语从句的用法（即时间状语从句、地点状语从句、原因状语从句、条件状语从句、目的状语从句、结果状语从句、比较状语从句、方式状语从句和让步状语从句）2．状语从句中的紧缩形式重点扫描种类连接词注意点时间状语when,whenever,while,as,before,after,since,until,till,bythetime,assoonas,hardly…when,nosooner…than,themoment,theminute,theinstant,immediately,directly,instantly主句表示将来意义时，从句须用一般现在时；while引导的从句中动词一般是延续性的；until用在肯定句中主句动词是延续性的，而否定句中主句动词为短暂性的。地点状语where,wherever原因状语because,as,since,nowthatbecause语气最强，since较弱，表示大家都明了的原因，as又次之。条件状语if,unless,once,incase,aslongas,onconditionthat,suppose/supposing,provided/providing从句中动词时态不可用将来时，常用一般时代替。目的状语sothat,inorderthat,forfearthatsothat和inorderthat后常接may,should,could,would等情态动词。结果状语so…that,such…that在非正式文体中有时that可以省略。比较状语than,as…as,notso/as…as,themore…themore方式状语asif,asthough,asasif和asthough引导的从句一般用虚拟语气。让步状语as,though,although,evenif,eventhough,nomatterwhat,whatever,nomatterwho,whoever,nomatterwhich,whichever,nomatterhow,however,nomatterwhen,wheneveras在让步状语从句中常用倒装形式；although和though用正常语序，可和yet连用，但不可和but连用。关于状语从句的几点注意：1．when可用作并列连词，意为“在那时，在这时”，相当于andatthis/thattime。常用于下列句式：1)Somebodywasdoing…when…2)Somebodywasabouttodo/goingtodo/onthepointofdoing…when…3)Somebodyhadjustdone…when…2．when还可表示原因，意为“既然”。如：Itwasfoolishofyoutotakeataxiwhenyoucouldeasilywalkthereinfiveminutes.3．while可作为并列连词，意为“而，却”，表示对比转折。4．while还可引导让步状语从句，相当于though/although引导的让步状语从句。5．nosooner…than…和hardly/scarcely…when…表示“一……就……”，在此结构中主句常用过去完成时，than和when引导的句子谓语动词用一般过去时。当nosooner和hardly/scarcely提到句首时，应用倒装语序。6．everytime,eachtime,nexttime,thefirsttime,theinstant等名词短语用来引导时间状语从句时前不可加介词。同时，immediately,directly,instantly等副词也可以引导时间状语从句。7．在时间状语从句、条件状语从句和让步状语从句中，当从句的主语和主句的主语一致并且含有be动词时，常把从句的主语和be动词省略。While(Iwas)walkingdownthestreet,Icameacrossanoldfriendofmine.Helookedeverywhereasif(hewas)insearchofsomething.8．几个相似句式的区别：1)Itwas/willbe+一段时间+before从句.(多久之后…将…)2)Itis/hasbeen+一段时间+since从句.（表示的时间从since从句的动作完成或状态结束时算起）3)Itwas/willbe+点时间+when从句(此句中when引导时间状语从句，表示“当……时候”)走进高考20101.Timisingoodshapephysicallyhedoesn'tgetmuchexercise.（湖南）A.ifB.eventhoughC.unlessD.aslongas2.Theschoolrulesstatethatnochildshallbeallowedoutoftheschoolduringtheday,______accompaniedbyanadult.（山东）A.onceB.whenC.ifD.unless3.youmayhave,youshouldgatheryourcouragetofacethechallenge.（上海）A.HoweveraseriousproblemB.WhataseriousproblemC.HoweverseriousaproblemD.Whatseriousaproblem4.Becauseoftheheavytraffic，itwasalreadytimeforlunchbreakshegottoheroffice.（四川）A.sinceB.thatC.whenD.until5.Johnthinksitwon’tbelongheisreadyforhisnewjob.（陕西）A.whenB.afterC.beforeD.since6.Today,wewillbegin________westoppedyesterdaysothatnopointwillbeleftout.（重庆）A.whenB.whereC.howD.what7Thegirlhadhardlyrungthebellthedoorwasopenedsuddenly,andherfr...