中考英语专题复习：状语从句考点讲解

.精选文档中考英语专题复习六：状语从句的考点讲解【考点直击】时间状语从句when,as,while,before,after,since,till,not……until,assoonas等连词来引导。原因状语从句because,since,as,for,nowthat,etc.条件状语从句if,unless（除非）,目的状语从句inorderthat,sothat,结果状语从句so…that,sothat,such…that,让步状语从句though,although,evenif,eventhough,however,whatever,比较状语从句as…as,so…as,than,地点状语从句where,wherever【名师点睛】用来修饰主句中的动词，副词和形容词的从句叫状语从句。根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句，原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。状语从句可置主语之前，也可置于主语之后。前置时，从句后用逗号与主句隔开；后置时，与主句之间无标点符号。时间状语从句(1)时间状语从句常用when/as/while,before,after,since,till,until,assoonas等连词来引导。例如：ItwasraininghardwhenIgottoschoolyesterday.Whilehewasdoinghishomework,thetelephonerang.Ashewalkedalongthelake,hesanghappily.HehadlearnedalittleChinesebeforehecametoChina.Afterhefinishedmiddleschool,hewenttoworkinafactory.when、as和while的区别：1）when引导的从句的谓语动词可以是延续性的动词，又可以是瞬间动词。并且when有时表示“就在那时”。例如：Whenshecamein,Istoppedeating.她进来时，我停止吃饭。(瞬间动词)WhenIlivedinthecountryside,Iusedtocarrysomewaterforhim.当我住在农村时，我常常为他担水。（延续性的动词）Wewereabouttoleavewhenhecamein.我们就要离开，就在那时他进来了。(瞬间动词)2）While引导的从句的谓语动词必须是延续性的，并强调主句和从句的动作同时发生（或者相对应）。并且while有时还可以表示对比。例如：Whilemywifewasreadingthenewspaper,IwaswatchingTV.(wasreading是延续性的动词，wasreading和waswatching同时发生)Ilikeplayingfootballwhileyoulikeplayingbasketball.我喜欢踢足球，而你喜欢打篮球。（对比）3）As表示“一边……一边”，as引导的动作是延续性的动作，一般用于主句和从句动作同时发生；as也可以强调“一先一后。.精选文档例如：Wealwayssingaswewalk.我们总是边走边唱。（as表示“一边……一边”）Aswewasgoingout,itbegantosnow.当我们出门时，开始下雪了。（as强调句中两个动作紧接着先后发生，而不强调开始下雪的特定时间）(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。例如：I’llringyouupassoonasIgettoNewYork.Iwilltellhimeverythingwhenhecomesback.Hewon’tbelieveituntilheseesitwithhisowneyes.(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。如果主句用否定式，其含义是“直到……才……”,“在……以前不……”,谓语动词可用瞬间动词。例如：Theyoungmanreadtillthelightwentout.Let’swaituntiltherainstops.Wewon’tstartuntilBobcomes.Don’tgetoffuntilthebusstops.历年中考题：()1.It’squitecommoninBritaintosay“Thankyou”tothedrivers____peoplegetoffthebus.（2009·河南）A.afterB.sinceC.untilD.when()2.IwillcallyouassoonasI______thetickettothefootballmatch.（2009·陕西绥德）A.willgetB.getC.gotD.amgetting()3.---It’sraining,Daisy．Please________anumbrellawithyou.（2009·深圳）---Thanks.I’llreturnittoyouwhenI______nextweek．A.take,comeB.take,willcomeC.bring，comeD.bring,willcome()4.Peterlikesreadinganewspaper____heishavingbreakfast.(2010.河北省卷,42.1)A.untilB.whileC.becauseD.though()5.Manystudentsdidn’trealizetheimportanceofstudy___theyleftschool.(2010.江苏省盐城市12.1)A.whenB.untilC.asD.after()6.Youshouldgooveryourtestpaper_____youhanditin.(2010.浙江省衢州市23.1)A.beforeB.thoughC.becauseD.assoonas()7.Scientistssayitmaybeafewyears______itispossibletotestthenewmedicineonpatients.(2010.江苏省无锡市.12.1)A.becauseB.afterC.beforeD.since()8.Mr.Brownknewnothingaboutthegoodnews______hiswifetoldittohim.(2010广西南宁32.1）A.beforeB.afterC.sinceD.if()9.Wewon’tstartthemeeting______ourteacherarrives.(2010·天津市，41，1）A.thoughB.untilC.whileD.or条件状语从句(1)条件状语从句通常由if,unless=if…not引导。例如：Whatshallwedoifitsnowstomorrow?Don’tleavethebuildingunlessItellyouto.(2)在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态。例如：I’llhelpyouwithyourEnglishifamfreetomorrow.Hewon’tbelateunlessheisill.(3)“祈使句+and(or)+陈述句”在意思上相当于一个带有条件状语从句的复合句。例如：Hurryup,oryou’llbelate..精选文档=Ifyoudon’thurryup,you’llbelate.Studyhardandyouwillpasstheexam.=Ifyoustudyhard,youwillpasstheexam.If和when双面孔：区分if和when引导宾语从句和状语从句的不同：When引导时间状语从句的时候意为“当…的时候”，引导宾语从句的时候意为“什么时候”；If引导条件状语的时候意为“如果”，引导宾语从句意为“是否”。()1.—Mikewantstoknowif___apicnictomorrow．—Yes.Butifit___,we'llvisitthemuseuminsteadA.youhave;willrainB.youwillhave;willrainC.youwillhave;rainsD.willyouhave;rains()2.—Doyouknowwhenhe___backtomorrow？—Sorry,Idon't.Whenhe___back,I'lltellyouA.comes;comesB.comes;willcomeC.willcome;comesD.willcome;willcome历年中考题：()1.Tommy,doyouknowifFrank______tothezoothisSundayifit_______?（2009·湖北孝感）—Sorry,Ihavenoidea.A.willgo;isfineB.goes;isfineC.willgo;isgoingtobefineD.goes;willbefine()2.IfIfindhisphonenumber,I______you.（2009.北京）A.tellB.toldC.willtellD.havetold()3.IbetMrs.Blackwillcometohelpuswiththecelebrationifshe______toobusytomorrow.（2009·吉林通化）A.isB.willbeC.won’tbeD.isn’t()4.—David,turnofftheTV________nooneiswatchingit．（2009·深圳）—Butit_______offalready！Themusicisfromtheradio．A.sothat,hasbeenturnedB.when,hasturnedC.if,hasbeenturnedD.because,hasturned()5.Idon’tknowifit______tomorrow.Ifit______,wewon’tgoonapicnic.(2010.四川省内江市39.1)A.rains;;rainsB.willrain;rainsC.willrain;willrain()6.—Couldweplayfootballinyourplayground,Sir?(2010·江苏省扬州市，，41）--No,_____youhavetheprincipal’snote.A.ifB.unlessC.becauseD.since()7.--IhearJackChanwillcometoLaiwunextweek.(2010·山东省莱芜市，27，1）--Really?_______hecomes,myyoungersisterwillbeveryhappy,A．IfB．UntilC．UnlessD．Before原因状语从句(1)原因状语从句通常由because,since,as引导。例如：Hedidn’tcometoschoolbecausehewasill.Asitisraining,weshallnotgothezoo.Sinceyoucan’tanswerthequestion,I’llasksomeoneelse.(2)because表示直接原因，语气最强。Because引导的原因状语从句多放在主句之后。回答由why提出的问题，只能用because。As和since语气较弱，一般用来表示明显的原因。由as和since引导的原因状语从j句多放在句首。例如：.精选文档------Whyaren’tgoingthere?------BecauseIdon’twantto.Ashehasnocar,hecan’tgetthereeasily.Sincewehavenomoney,wecan’tbuyit.(3)beca