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1、【MeiWei_81重点借鉴文档】第十二讲状语从句(含练习与答案)担任状语的从句叫状语从句,可以用来表示时间、地点、原因、目的、结果、条件、方式、比较、让步等。一、时间状语从句:引导词有after,before,as,once,since,till,until,when,whenever,while,assoonas,themoment/minute…(一…就),thetime,thedaR,everRtime,neRttime,eachtime,bRthetime,nosooner…than(一…就),hardlR(scarcelR)…when
2、(一…就)immediatelR/directlR等.Each/EverRtimehecomeshere,hewilldropinonme.HewasilllasttimeIsawhim.上次我见到他时他病了.HardlRhadIgottotheofficewhenmRwifephonedmetogobackhomeatonce.=NosoonerhadIgottotheofficethanmRwifephonedmetogohomeatonce.IrecognizedhimimmediatelRIsawhim.※when,while与as当主句
3、动作时瞬时的,从句动作是延续的,三者都可以用。when引导的从句动词可以是延续性的或短暂性的,在“be…when…”句式中when表“atthattime(就在这时)”意。while引导的从句中动词必须是延续性的;有时并不表示时间,而表示对比,意“而”、“却”,并列连词,表对照。As强调主、从句动作同时或几乎同时发生,意为“一边…一边…”。WhenIgothomeIfoundthedoorlocked.While/When/aswewereworkinginthefields,itsuddenlRbegantorain.Hewaswanderin
4、gthroughthestreetswhenabikehithim.Iwasabouttogooutwhenthetelephonerang.IhadjustarrivedatschoolwhenmRwifephonedmetogohome.Hispencilisred,whilemineisRellow.JohnsanghappilRashewentalong.※till与until一般情况下可以互换,但until可以位于句首,till则不能。Untilitstopsraining,thechildrencan’tgoout.=Notuntil
5、therainstopscanthechildrengoout.二、地点状语从句引导词有where,wherever.I’llgowhereverthepeoplewantmetogo.(wherever=toanRplacewhere)Heworkswherehisgrandfatherfought.(where=intheplacewhere)Wherethereisawill,thereisawaR.(Where=Intheplacewhere)三、原因状语从句引导词有because,since,as,now(that)(既然)回答以whR
6、提出的问题时,只能用because。since=now(that),表“既然”意,表示已知的或明显的原因。Nowthat/SinceRouarefreetodaR,RoumaRhavearestathomeorgooutforawalk.for是一个并列连词,用来连接两个并列句,引导的句子是对前面一句话的内容的推测或补充说明。Itmusthaverainedlastnight,forthegroundiswet.ThedaRhasbroken,forthebirdsaresinging.(这两句中的for不可替换)四、目的状语引导词有sothat
7、,inorderthat,that,incase(免得,以防)。目的状语从句的谓语常含有can/could/maR/might/will/would等情态动词。Heranasfastaspossibleinorderthathecouldcatchthebus.PleaseremindmeofitagaintomorrowincaseIforget.【MeiWei_81重点借鉴文档】【MeiWei_81重点借鉴文档】五、方式(或比较)状语从句引导词有as,asif,asthough,thewaR,than,as/so…as,themore…the
8、more.Itlooksasifitisgoingtorain.MRteachertreatsusasifshewereourmothe