初中状语从句讲解及练习题

初中状语从句全面讲解练习题及答案1、基本含义用来修饰主句中的动词，副词和形容词的从句叫状语从句。例句：IwillcallyouassoonasIarriveinBeijing.Ifhecomesback,pleaseletmeknow.IknowhowtolightacampfirebecauseIhaddoneitbefore.2、用法归纳1.时间状语从句(1)时间状语从句常用when,as,while,before,after,since,till,until,assoonas等引导。Itwasraininghardwhenwegottoschoolyesterday.Whilehewasdoinghishomework,thetelephonerang.Ashewalkedalongthelake,hesanghappily.HehadlearnedalittleChinesebeforehecametoChina.Afterhefinishedmiddleschool,hewenttoworkinafactory.(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。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。Theyoungmanreadtillthelightwentout.Let’swaituntiltherainstops.Wewon’tstartuntilBobcomes.Don’tgetoffuntilthebusstops.2.条件状语从句(1)条件状语从句通常由if,unless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。Hurryup,oryou’llbelate.=Ifyoudon’thurryup,you’llbelate.Studyhardandyouwillpasstheexam.=Ifyoustudyhard,youwillpasstheexam.3.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引导的原因状语从居多放在句首。例如：------Whyaren’tgoingthere?------BecauseIdon’twantto.Ashehasnocar,hecan’tgetthereeasily.Sincewehavenomoney,wecan’tbuyit.(3)because和so不能同用在一个句子里。4.结果状语从句(1)结果状语从句由so…that,such…that,sothat引导。例如：Heissopoorthathecan’tbuyabikeforhisson.Sheissuchagoodteacherthateverybodylikesher.Mypencilfellunderthedesk,sothatIcouldn’tseeit.(2)so…that语such...that可以互换。例如：在由so...that引导的结果状语从句中，so是副词，与形容词连用。其结构是:“...so+形容词（副词）+that+从句”。Hewassogladthathecouldn’tsayaword.Thehallissobigthatitcanhold2,000people.Motherlivessofarawaythatwehardlyeverseeher.在由such…that引导的结果状语从句中，such是形容词，它修饰的可以是单数或复数可数名词，也可以是不可数名词；名词前面可以带形容词，也可不带。如果是单数可数名词，前面需加不定冠词a或an。例如：Itwassuchahotdaythatnobodywantedtodoanything.Hehadsuchlongarmsthathecouldalmosttouchtheceiling.Hemadesuchrapidprogressthathedidverywellinthemid-term.有时上述两种结构是可以互换的。例如：Itwassuchawonderfulfilmthatallofuswantedtoseeitagain.=Thefilmwassowonderfulthatallofuswantedtoseeitagain.Itissuchanimportantmatchthatnobodywantstomissit.=Thematchissoimportantthatnobodywantstomissit.(3)如果名词前由many,much,little,few等词修饰时，只能用so,不用such。例如：Soonthereweresomanydeerthattheyateupallthewildroses.Hehassolittletimethathecan’tgotothecinemawithyou.5.比较状语从句比较状语从句通常由as…as,比较级+than…等连词引导。例如：TomrunsfasterthanJohndoes.Thisclassroomisasbigasthatone.7.让步状语从句(1)让步状语从句通常由although,though等连词引导。例如：Thoughheisyoung,heknowsalot.AlthoughIamtired,Imustgoonworking.(2)although(though)不能用在同一个句子中。例如：不能说：Thoughitwasraininghard,buthestillwentout.应该说：Thoughitwasraininghard,hestillwentout.或Itwasraininghard,buthestillwentout.8.地点状语从句地点状语从句常常由where来引导。例如：Gowhereyoulike.Wherethereisawill,thereisaway.练习：1.I’llletyouknow____hecomesback.A.beforeB.becauseC.assoonasD.although2.Shewillsingasong____sheisasked.A.ifB.unlessC.forD.since3.Wewillwork____weareneeded.A.wheneverB.becauseC.sinceD.wherever4.Readitaloud_____theclasscanhearyou.A.sothatB.ifC.whenD.although5._____yougo,don'tforgetyourpeople.A.WheneverB.HoweverC.Wherever6.Itisabouttenyears_____Imetyoulast.A.sinceB.forC.whenD.as7.Theywillneversucceed,_____hardtheytry.A.becauseB.howeverC.whenD.since8._____stillhalfdrunk,hemadehiswayhome.A.WhenB.BecauseC.ThoughD.As9.____shewasverytired,shewentonworking.A.AsB.AlthoughC.EvenD.Inspiteof10.Busy_____hewas,hetriedhisbesttohelpyou.A.asB.whenC.sinceD.for11.IlearnedalittleRussian_____Iwasatmiddleschool.A.thoughB.althoughD.when12.____wegottothestation,thetrainhadleftalready.A.IfB.UnlessC.SinceD.When13.___therainstops,we'11setoffforthestation.A.BeforeB.UnlessC.Assoonas14.Shewas___tired__shecouldnotmoveaninch.A.so,thatB.such,thatC.very,that15.Wedidn’tgohome_____wefinishedthework.A.sinceB.untilC.becauseD.though16.I'llstayhere_____everyoneelsecomesback.A.evenifB.asthoughC.becauseD.until17.Althoughit'sraining,_____arestillworkinginthefield.A.theyB.buttheyC.andtheyD.sothey18.Speaktohimslowly_____hemayunderstandyoubetter.A.sinceB.sothatC.forD.because19.You'llmissthetrain______youhurryup.A.unlessB.asC.ifD.until20.Whenyoureadthebook,you'dbettermakeamark_____youhaveanyquestions.A.atwhichB.atwhereC.theplaceD.where21.We'dbetterhurry______itisgettingdark.A.andB.butC.asD.unless22.Ididn'tmanagetodoit_____youhadexplainedhow.A.untilB.unlessC.whenD.before23._____hecomes,wewon'tbeabletogo.A.WithoutB.UnlessC.ExceptD.Even24.Ihurried_____Iwouldn'tbelateforclass.A.sinceB.sothatC.asifD.unless25._____Icatchacold,Ihavepaininmyback.A.EverytimeB.ThoughC.EvenD.Where26.What'sthematter_____theystillhaven'tansweredthetelegram?A.whenB.thatC.thoughD.however27.Bringitnearer_____Imayseeitbetter.A.althoughB.eventhoughC.sothatD.