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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类1、时间状语从句wh
2、en,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：Theballgoesupveryhighafterithitstheground.这球着地后蹦得很高。Wait
3、untilyou’recalled.你等着叫你吧！Whenhecame,Iwascooking.他来时，我在做饭。I’llcallyouassoonasIcomeback.我一回来就给你打电话。Beforetheycameback,wehadfinishedthework.他们回来前，我们已经完成工作了。Wehaven’tseeneachothersinceheleft.从他离开后我们没见过面。※when:持续性／非持续性动词都可以当…时Areyougoingtobeasailorwhenyouleaveschool?while/w
4、hen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,theteachercamein.when(就在这时)Iwassleeping,whensomeoneknockedatthedoor.※while的其他含义：WhileIwaswalkingdownthestreet,Icameacrossanoldfriend.(
5、while=_______)Helikespopmusic,whileIamfondoffolkmusic.(while=_______)WhileIreallydon’tlikeart,Ifindhisworkimpressive.(while=___________)Whilethereislifethereishope.(while=_______________)whenalthoughaslongasbut※as:当…时；一边…一边；随着……＊某事一发生，另一事立即发生＊两个动作同时发生Asthedaywenton,the
6、weathergotworse.Asthecaptainpassedme,Iaskedhimwhethertherewasanyhopeofsavingtheship.★as的常见用法：1.Shesangassheworked.一边……一边……2.YoumusttrytodoasIdid.像…..一样3.Asshewaslateforclass,shehadtosaysorry.由于※before①在……前ItwillbehalfayearbeforeIcomeback.Itwon’tbehalfayearbeforewemeeta
7、gain.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......不久就....※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until/till所表示的时间，意为“某动作一直延续到某时间点
8、才停止”。如：Wewaiteduntilhecame.2．用于否定句时，主句谓语动词是非延续性动词，从句为肯定，意为“某动作直到某时间才开始”。如Hewon’tgotobedtill/untilshereturns.3．till不可以
