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1、RevisionoftheAdverbialClauses状语从句复习时间状语从句地点状语从句原因状语从句条件状语从句让步状语从句结果状语从句目的状语从句方式状语从句比较状语从句九种常用的状语从句及其常用的连接词一、时间状语从句时间状语从句常用的从属连词when,while,as,before,after,assoonas,till,until,not…until,once等。Shedidn’tgotobeduntilhisfathercameback.Onceyouseehim,youwon’tforgethim.一、时间状语从句注意当
2、主句是一般将来时态时，时间状语从句中使用一般现在时表示将来的含义。IwillcallyouwhenIgetthere.I’lltellhimassoonashecomesback.二、地点状语从句地点状语从句常用的从属连词where,wherever.Stopwhereyouare,oryou’llbekilled.Whereverhegoes,healwayscarrieshisEnglishbook.三、原因状语从句原因状语从句常用的从属连词because,as,since等引导。Hedidn’tgotoschoolbecausehe
3、wasill.as,since,because这三个连接词都可以引导原因状语从句，如果“原因”构成主句含义的主要起因，通常用because.Hewaslateyesterdaybecausehegotuplate.如果“原因”不构成主句的主要起因，就用as或since.Asitwasgettinglate,hebegantothinkofgoinghome.Sincewearestudents,weshouldstudyhard.四、条件状语从句条件状语从句常用的从属连词if,unless,as(so)longas等引导Ifyouhave
4、anyquestions,youcancallmeup.Youwon’tsucceedunlessyouworkhard.Icanlendyoumybookaslongasyoukeepitclean.条件状语从句与时间状语从句一样，从句谓语动词用一般现在时表示将来。We’llgototheparkifitdoesn’train.五、让步状语从句though,although,evenif,eventhough,asAlthoughheisold,heisveryhealthy.Thoughhemetalotofdifficulties,
5、henevergaveup.Youngasheis,heknowalotofthings.六、方式状语从句as,justas,asifDoasyoulike.七、目的状语从句that,sothat,inorderthat等IgetupearlyinorderthatIcancatchthefirstbus.Shefinishedherworkearlysothatshecangohomeearly.八结果状语从句sothat,so…that,such..thatThebabywassofrightenedthathecouldn’tmov
6、eatall.Sheissuchagoodgirlthateveryonelikesher.九比较状语从句as…as,so…as,more…than,less..than.The比较级…,the比较级等HeisastallasTom.TomislesscleverthanMary.复习状语从句应注意1.时间状语从句和条件状语从句中用一般现在时代替本应使用的一般将来时，用一般过去时代替本应使用的过去将来时。I’lltellhimthenewswhenhecomesback.Hesaidthathewouldletmeknowassoonas
7、Tomcame.2.由though,although引出的从句，主句不能用but；由because引出的从句，主句不用so.
