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状语从句【考点1】时间状语从句时间状语从句的常见连词连词用法例句when1.意为“当…时”,从句的动词可用延续性动词，也可用非延续性动词2.意为“这时”或“在那时”WhenIcameintotheroom,hewaswritingaletter.IwaswalkingalongthestreetwhensuddenlyTompattedmeontheshoulder.while1.意为“在某一段时间里”，“在…期间”；while引导的动作必须是持续性的2.意为“然而”Whileitwasraining,theywentout.Istayedwhilehewasaway.Allofusareworkinghardwhileheissleeping.as1.意为“一边...一边”，引导持续性动作，强调主句和从句的动作同时发生2.意为“随着”Hehurriedhome,lookingbehindashewent.Astimegoesby,IlikeChinabetter.before意为“在…之前,才,就”Beapupilbeforeyoubecomeateacher.IfinishedmytaskbeforeIwenthome.after意为“在…之后”Hearrivedafterthegamestarted.tilluntil1.若主句动词是持续性动作，常用肯定式，表示“直到…为止”2.若主句动词是瞬间动词，要用否定式not…until表示“直…才”Wewaitedtill(until)hecameback.Shedidn’tstopworkinguntileleveno’clock.Notuntileleveno’clockdidshestopworking.since1.意为“自从…以来”，主句常用现在完成时，从句用一般过去时2.it’s+时间+since从句GreatchangeshavetakenplaceinChinasince1978.Shehastaughtinthisschoolsinceshecametothiscityin1989.It’sthreeyearssinceshecametothiscity.assoonas意为“一…就”AssoonasIarriveinShanghai,I’llwritetoyou.时间状语从句的时态1.主句一般将来时，从句用一般现在时(主将从现)Theboywillbewriterwhenhegrowsup.2.主语含有情态动词，从句用一般现在时(主情从Whenthelightsarered,thetrafficmust现)stop.3.主句为祈使句，从句用一般现在时(主祈从现)Pleasedon’tgotobedbeforeyoufinishyourhomework.4.主句为一般过去时，从句也用过去时态(主过从过)IlikedreadingwhenIwasyoung.例题1.Themanagerofthehotelwaswaitingatthegatetheguestsarrived.A.whileB.whenC.unlessD.after例题2：Bob,dinnerisready.Pleasewashyourhandsyoueat.A.untilB.afterC.whileD.before例题3：Mr.Blackwalkedaroundandofferedhelpweweredoinganexperiment.A.whileB.althoughC.untilD.unless例题4：Mygrandparentswroteletterstokeepintouchwithotherstheywereyoung.A.whenB.sinceC.afterD.before例题5：—Andy,whencanwestarttodiscussthecasegiventoyoulastweek?—I'llbereadytodiscussitwithyouyouhavetime.A.whateverB.wheneverC.howeverD.wherever参考答案：BDAAB【考点2】条件状语从句条件状语从句的常见连词连词用法例句if意为“如果”Difficultiesarenothingifwearenotafraidofthem.unless意为“如果不；除非”，unless和if…not同义，通常二者可以换用。Weshallgotheretomorrowunlessitrains.=Weshallgotheretomorrowifitdoesn’train.aslongas意为“只要”Solongasyouworkhard,youwillsucceed.if引导条件状语从句和宾语从句的区别1.if引导条件状语从句，表示“如果”，主句Ifitdoesn'train,Iwillgotothecinematomorrow.用一般将来时态，从句用一般现在时表示将来2.if引导宾语从句，表示“是否”，如果主句是一般现在时，从句可用各种对应的时态;如果主句是一般过去时，从句用过去的某种时态Ididn'tknowifhewouldcometomorrow.例题1：Youwillneverachievesuccessyoudevoteyourselftoyourwork.A.afterB.ifC.becauseD.unless例题2：Youwillbeabletoseesomethingyouclimbontothoserocks.A.ifB.thoughC.untilD.unless例题3：—Doyouthinkhehastakenthebag?—I'mmistaken.A.that;UntilB.whether;IfC.that;UnlessD.whether;Unless例题4：—Didyouwinthegameyesterday?—Notreally.________wealltriedourbest,welostit.A.IfB.ThoughC.Unless例题5：Wedon’tknowifourfriend_____.Ifhe_____,we’llletyouknow.A.comes;comesB.comes;willcomeC.willcome;comes参考答案：DACBC【考点3】原因状语从句原因状语从句常见连词连词用法例句becausebecause用来回答why的问题，语气最强一般放在主句之后IwaslateyesterdaybecauseIwasill.sincesince表示既然或全已知的理由，稍加分析即可表明的原因，多放句首Sinceeveryoneishere,let’sbeginourmeeting.as从句常放在句首，说明次要的原因，主句说明结果，常用于口语中Ashedidn’tknowmuchEnglish,helookedupthewordinthedictionary.forfor连接的是并列句Itmusthaverainedlastnight,forthegroundisstillwet.【注】because,as,since,for不能与so同时使用。例题1.Hestayedupverylatethatnight.hewokeupinthemorning,thesunwasalreadyhighupinthesky.A.UntilB.AfterC.WhileD.As例题2：youknowlittleabouttheQingandMingdynasties,you'dbetterreadmorebooksaboutthem.A.UnlessB.SinceC.AlthoughD.Whether例题3：Couldyouhelpmewithhousework________youarefreetoday?A.sinceB.thoughC.unlessD.until参考答案：DBA【考点4】结果状语从句结果状语从句常见连词连词用法例句sothat意为“因此，所以，结果”，sothat前有逗号Weturneduptheradio,sothateveryoneheardthenews.so…that意为“如此…以至于…”，常见结构如下：so+adj./adv.+that…so+many/few(+可数名词复数)+that…so+much/little(+不可数名词)+that…so+adj.+a/an+可数名词单数Hewassogladthathecouldn’tsayaword.Motherlivessofarawaythatwehardlyeverseeher.Soonthereweresomanydeerthattheyateupallthewildroses.Hehassolittletimethathecan’tgotothecinemawithyou.Itissointerestinganovelthatallofuswanttoreadit.such…that意为“如此…以至于…”，常见结构如下：such+a/an+adj.+可数名词单数+thatsuch+adj.+可数名词复数+thatsuch+adj.+不可数名词+thatItissuchaninterestingnovelthatallofuswanttoreadit.Hegavesuchimportantreasonsthathewasexcused.Hemadesuchrapidprogressthathedidverywellinthemid-term.such…that与so…that的区别：名用such，形、副so，多多少少也用so。例题1：ItisaninterestingbookIwanttoreaditoncemore.A.so;thatB.such;thatC./;sothatD.such;as例题2：Myfamilyalwaysgosomewhereinteresting________theholidaybegins.A.assoonasB.soC.sothatD.eventhough例题3：—HowdoyoulikethemovieKongfuPanda3?—Itis_________exciting_________I’dliketoseeitagain.A.so,thatB.such,thatC.enough,toD.too,to例题4：TheyspokequietlyIcouldhardlyhearthem.A.such;thatB.so;thatC.neither;norD.both;and参考答案：BAAB【考点5】目的状语从句目的状语从句常见连词连词用法例句sothatinorderthat意为“以便；为了”，目的状语从句中常用情态动词may/might/can/could/would/should等放在动词之前，从句往往放在主句之后，主从句之间不用任何标点符号。注意sothat和inorderthat的转换。IshallwritedownyourtelephonenumbersothatImaynotforget.Theyworkedharderthanusualinorderthattheycouldfinishtheworkaheadoftime.【注】如果目的状语从句的主语与主句的主语相同，可用inorderto转化为简单句。I’llwritedownyourphonenumbersothatImaynotforget.=I’llwritedownyourphonenumberinordernottoforget.例题1：Ilookedthroughmytestpaperagainandagain_______Iwouldn’tmakeanymistakes.A.soB.becauseC.sothat例题2：Mr.Greenspeaksve