各类从句的构成及其用法

从句状语从句同位语从句名词从句定语从句主语从句宾语从句表语从句1.时间状语从句2.地点状语从句3.条件状语从句4.原因状语从句5.结果状语从句6.目的状语从句7.方式状语从句8.让步状语从句9.比较状语从句1.时间状语从句时间状语从句由连词when/while/assoonas/before/after/since/till/until等引导，用来回答“When”。Aftershebuysthiscar,CocowillbeabletodrivefromSichuantoBeijing.2.地点状语从句地点状语从句由where/wherever引导，用来回答“Where”。Whereveryougo,Iwillbewithyou.3.条件状语从句条件状语从句指出某事发生的条件或环境，通常由if/unless引导。Makesuretogetenoughsleepifyouwanttobehealthyandwealthy.4.原因状语从句原因状语从句说明时间发生的原因，一般由because/as/since引导，通常用来回答“Why”。UncleBuzzfiredDaisybecauseshewasoftenangryandlazy.5.结果状语从句结果状语从句由so...that/such...that引导，意味“如此...以至于”。Andrewwassotiredthathefellasleepwhilegoingtothemoon.6.目的状语从句目的状语从句说明主句的目的，通常由sothat/inorlderthat/so引导。Dadquiclyputthemilkinthefridgeso(that)itwouldn'tgosour.7.方式状语从句方式状语从句说明事件发生的方式，通常由as/exactlyas/justas/asif/asthough/theway来引导，用来回答“How”。Pleasejustdoasyouaretold,andyouwillfindsomethingbetterthangold.8.让步状语从句让步状语从句是表示“虽然，尽管”的意思，通常由although/though/eventhough/evenif/whether引导。WhetherIwinorlose,Iwillfight.9.比较状语从句比较状语从句是用来作比较的从句，通常由than/as/as...as引导。TherainendedsonnerthanIexpected.由that引导1.“thereisevidencethat…”→“有证据表明……”ThereisevidencethatOhm’slawappliesonlytometallicconductors.有证据表明欧姆定律只适用于金属导体。2.“thereisnodoubtthat…”→“毫无疑问……”Thereisnodoubtthatmercury（水银）isametal.毫无疑问,汞(水银)是一种金属。3.“thereiseverypossibilitythat…”→“完全有可能……”Thereiseverypossibilitythatsatisfactoryresultswillbeobtained.完全有可能取得令人满意的结果。1.that引导：ThatTomlovedKatecameasagreatsurprisetous.ItcameasagreatsurprisetousthatTomlovedKate.2.why/when等引导WhyAmyloveshernoisydogpuzzlesme.1.that引导的宾语从句（that可省略）DoyouthinkthatSamcheatedonthemathexam.SallytoldmethatherfamilywasgoingtomovetoItaly.Sheannounced(宣布)thatPamreceivedanAonyesterday'sexam.2.疑问词when/who/what/where/whatever/how/which/why等引导DoyouknowhowoldCocois?IknowhowoldCocois.Idon'tknowhowoldCocois.DoyouknowwhenAnnisgoingtoIran?CanyoutellmywhatIshouddo?Idon'tknowwhereshehasgone.IknowwhatSuethinksaboutLulu.3.whether/if引导(whether/if可通用)Doyouknowwhether/ifKayisgettingbettertoday?Idon'tknowwhether/ifKayisgettingbettertoday.Doyouknowif/whetherKimcanswim?Idon'tknowif/whetherKimcanswim.(只能用whether)宾语从句在介词后：ItdependsonwhetheritwillrainonSaturday.与or连用：Iwillaskshewhethershecancometomorrowornot.宾语从句前移：WhetherJoewillgotoJapanorAmericathissummer,Ireallydon'tknow.1.that引导Thetroublewasthathedidn'twanttowork.Thetroublewasthatshedidn'tputonherseatbelt.2.why/when等引导That'swhyshewentthere.That'sthereasonwhyshewentthere.(定语从句，修饰名词reason)修饰名词或者代词的从句。被修饰的名词或代词叫做先行词。1.关系代词who/that做定语从句的主语。（不可省略）（who:人，that:人或物）Iknowagirl.Shehastraveledto180countries.Iknowagirlwho/thathastraveledto180countries.2.关系代词that/which做定语从句的主语（指物，不可省略）Susaniswearingadress.Itistoolongforher.Susaniswearingadressthat/whichistoolongforher.3.关系代词who/whom/that/which做定语从句的宾语(可省略)Thegirl（who/whom/that）Imetcouldspeakfivelanguages.Thedress(that)IgaveLidalooksfantasticonher.Thehotel(that)Jakestayedinlastweekisonabeautifullake.4.关系代词whose在定语从句中做定语Iknowawomanwhosesonjustwonthebasketballgame.Thetoydinosaurwhoselegsarebrokenisbehindthedoor.5.关系副词where/when/why在定语从句中做状语IliketovisitplacewhereIcangetafeelforthelocalculture.IstillrememberthedaywhenIfirstmether.Doyouknowthereasonwhyshedislikeme?(宾语从句：Doyouknowwhyshedislikeme?)