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1、状语从句讲练用作状语的从句叫做状语从句。引导状语从句的关联词是一些从属连词。例：Whenyoucrosstheroad,youmustbecareful.当你过马路时要小心。（when是从属连词）IwaslatebecauseImissedthebus.我迟到了，因为我误了公共汽车。（because是从属连词）.Ifsheasksme,I’lltellher.她如果问我，我就告诉她。（if是从属连词）Youlookasifyouneedarest.你像是需要休息似的。（asif是从属连词）.状语从句状语从句的种
2、类1、时间状语从句when,while,assoonas,since,until,before,after2、条件状语从句if3、结果状语从句so…that4、比较状语从句than5、原因状语从句because6、让步状语从句although,though7、地点状语从句where1.时间状语从句引导时间状语从句的关联词常有：after,before,when,while,whenever,assoonas,as,since,until等。例：Theballgoesupveryhighafterithitsth
3、eground.这球着地后蹦得很高。Waituntilyou’recalled.你等着叫你吧！※when:持续性／非持续性动词都可以当…时Areyougoingtobeasailorwhenyouleaveschool?while/when辨析when/while+doingWhen/whilereading,hefellasleep.when+终止性、延续性动词while+延续性动词Whentheteachercamein,Iwassleeping.=While/WhenIwassleeping,thetea
4、chercamein.when(就在这时)Iwassleeping,whensomeoneknockedatthedoor.※while的其他含义：WhileIwaswalkingdownthestreet,Icameacrossanoldfriend.(while=_______)Helikespopmusic,whileIamfondoffolkmusic.(while=_______)WhileIreallydon’tlikeart,Ifindhisworkimpressive.(while=______
5、_____)Whilethereislifethereishope.(while=_______________)whenalthoughaslongasbut※as:当…时；一边…一边；随着……Asthedaywenton,theweathergotworse.★as的常见用法：1.Shesangassheworked.一边……一边……2.YoumusttrytodoasIdid.像…..一样3.Asshewaslateforclass,shehadtosaysorry.由于※beforeEg.Imustfi
6、nishalltheworkbeforegohome.①在……前Eg.ItwillbehalfayearbeforeIcomeback.Eg.Itwon’tbehalfayearbeforewemeetagain.Eg.Wesailedfourdaysandnightsbeforewesawtheland.Wehadn’trunamilebeforehefelttired.④肯定句“才”否定句“就”②itwillbe+一段时间before......多久之后才...③itwon’tbe+一段时间before..
7、....不久就....时间状语从句afterafter表示在一段时间之后。eg.Let'splayfootballafterschool.放学后我们踢足球吧。Thesuncameoutsoonafterthestormstopped.暴风雨过后不久，太阳出来了。时间状语从句Sincesince表示自……以来。表示动作从过去某一点时间一直延续到说话时间为止。主句中通常为延续性动词的现在完成时，since从句中一般用短暂性动词的一般过去时。eg.Ithasbeenjustaweeksincewearrivedher
8、e.我们到这儿刚刚一星期。WherehaveyoubeensinceIlastsawyou?自上次我见过你之后，你去了哪里？Sinceshewasyoung,shehasbeencollectingstamps.她自年轻时起就一直集邮至今。※till,until和not…until：1.until/till引导时间状语从句用于肯定句时，主句的动词是延续性动词，表示动作或状态一直持续到u
