状语从句\n状语从句是中考词汇和句法部分考查的重点内容之一。在复习状语从句时,主要任务是弄清楚引导各种状语从句的连词的用法。\n1.引导时间状语从句的连词主要有when,while,as,bythetime,before,after,since,till/until,assoonas等。其中when,while和as都可表示"当……时候",但用法有区别:①when意为"在……时;当……时",可表示"点时间"或"段时间",从句谓语可以是终止性动词,也可以是延续性动词。例如:WhenIgothome,hewashavingsupper.②as意为"边……边……"或"与……同时",重在表示两个动作同时发生。伴随进行。as从句是终止性动词时,主句通常也必须是终止性动词。例如:Theysangastheydanced.③while只可表示"段时间",从句谓语只限于延续性动词。例如:WhileIwassleeping,myfathercamein.注:从句谓语是持续性动词时,when、while和as可以互换,主、从句谓语都是终止性动词时,when与as可互换,从句谓语表示状态时,通常用while。注意：在时间状语从句中，如果主句是祈使句或是叙述还未发生的动作，从句应用一般现在时表示动作将要发生。（主将来，从现在）如：Don’tgetoffthebusuntilitstops.车停下来之前不要下车。I’llphoneyouafterIgethome.我到家后就给你打电话。\n单项选择()1.We’llgiveherthebookwhenwe___hertomorrow.A.seeB.willseeC.seeingD.isseeing()2.—TomorrowwillbeFather’sDay.Whatwillyoudoforyourfather?--I’llsay“Iloveyou,Daddy”assoonashe___up.A.willwakeB.wakesC.iswakingD.woke()3.Heslept___hewaslisteningtomusiclastnight.A.whenB.beforeC.afterD.whileABD\n2.引导原因状语从句的连词原因状语从句一般由because,since,as,for引导.注意as,because,since和for的区别:①如果原因是构成句子的最主要部分,一般用because。because引导的从句一般不放在句子的开头。例如:ImissedthetrainbecauseIgotuplate.注:对于以why开头的问句,一般只能用because引导的从句来回答。②如果原因已为人们所知,或不如句子的其余部分重要,就用as或since、since比as稍微正式一些。as和since引导的从句一般放在句子的开头。例如:Ashewasnotwell,Idecidedtogotherewithouthim.Sincethismethoddoesn'twork,let'stryanother.③for表示所说的理由是一种补充说明,因此,for引导的从句可以放在括号里,而且for引导的从句一般不放在句子的开头。例如:Idecidedtostopandhavelunch,forIwasfeelingquitehungry.\n3.引导结果状语从句的连词主要有so/such…that…,sothat等。1)so...that结构在某种情况下可以与enoughto和too...to结构相互转换。例如:Sheissoshortthatshecan'treachthebuttonsofthelift.=Sheistooshorttoreachthebuttonsofthelift.2)sothat也可以引导结果状语从句,意为"结果是;以致于"。例如:Theymissedthebussothattheywerelateforclass.注:sothat也可引导目的状语从句,此时可用to或inorderto替换,将其改为简单句。例如:Hegotupearlysothathecouldgettoschoolontime.=Hegotupearlytogettoschoolontime.=Inordertogettoschoolontime,hegotupearly.\n()1.Heis__young__hecan’tcarrythebox.A.very,thatB.so,thatC.too,toD.so,to()2.Hegotupveryearly____hecaughttheearlybus.A.inordertoB.toC.sothatD.suchthat()3.Thereis___littlewaterinthejar__thebirdcan’tdrink.A.so,thatB.such,thatC.a,thatD.very,that()4.Heis__littleboy__hecanhardlyspeak.A.so,thatB.such,thatC.a,thatD.very,thatBCAB\n4.引导条件状语从句的连词主要有if(如果）unless（除非）注意：在条件状语从句中，如果主句是祈使句或是叙述还未发生的动作，从句应用一般现在时表示动作将要发生。（主将来，从现在）如：Youmaygoouttoplayifyourhomeworkisdone.但是if作是否讲时，所用时态要根据句子意思(if表如果，主将来，从现在。if表是否，时态随句意）如:Idon’tknowifhewillcometotheparty.Ifhecomes,I’llphoneyou.\n()1.Don’teatthefoodonthetableunlessyou___veryhungry.A.areB.willbeC.aregoingtobeD.is()2.Whatwouldyoudoifit____tomorrow?A.rainB.rainsC.willrainD.israining()3.Couldyoutellmeifit___tomorrow.Ifit___rain,wewillgotothepark.A.israining,won’tB.rains,doesn’tC.willrain,won’tD.willrain,doesn’tABD\n比较状语从句：as…as…(和…一样）notas/so…as…（不如……）和than（比）如：Anelephantismuchbiggerthanahorse.Heisascleverashisbrother.Shedoesn’tstudysohardashersister.让步状语从句：Though/although（尽管，虽然）,but（但是）,evenif（即使，纵然）注意：though/although和but不能同时用在一句话中，二者只用其一。如：Thoughitisraininghard,allthestudentsgettoschoolontime.或Itisraininghard,butallthestudentsgettoschoolontime.\n()1.Idon’tlikebread.Iwon’teatit___Iamveryhungry.A.ifB.whenC.asD.unless()2.I’mgoingtolookforanotherjob__thecompanyoffersmemoremoney.A.afterB.whenC.unlessD.besides()3.—Didyouseewhothedriverwas?--No,thecarransofast___Icouldn’tgetagoodlookathisface.A.thatB.whichC.asD.after()4.--__doyouliketheCoolKids?--Becausetheylookcool.A.WhatB.HowC.Why()5.Peterwaslateforthemeeting___hemissedthetrain.A.thoughB.becauseC.whileD.ifDCACB\n()6.Ifyou___latetomorrowmorning,youwon’tcatchtheearlybus.A.getupB.don’tgetupC.willgetup()7.I’lldoitbetteriftheteacher___meanotherchance.A.giveB.givesC.gaveD.willgive()8.Theboxis__heavy__Ican’tcarryit.A.too,toB.so,thatC.very,thatD.too,that()9.Nowadayssciencefictionisn’tas__ascartoonsamongteenagers.A.popularB.lesspopularC.morepopularD.themostpopular()10.Doyouknowif__backnextweek?Ifhe___back,pleaseletmeknow.A.hecomes,willcomeB.willhecome,comestraveledC.hewillcome,comesD.willhecome,willcomeABBAC