原因、结果、目的状语从句讲解和练习和答案

1、状语从句总结一、原因状语从句(1)原因状语从句通常由because,since,as,for引导。(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此外，because和so不能同用在一个句子里。例如：Whyaren'tgoingthere?-BecauseIdon'twantto.since引导原因状语从句，相当于nowthat,意思是因为，既然，鉴于”。例如：Sincetherainhasstopped,let'sgoforawal航然雨停了,我们出去散散步吧。as和since语气

2、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：Ashehasnocar,hecan'tgetthereeasily.Sincewehavenomoney,wecan'tbuyit.(3)for表示所说的理由是一种补充说明，for引导的从句一般不放在句子的开头。如：Idecidedtostopandhavelunch,forIwasfeelingquitehungry.练习：Iwaslateforclassyesterdaytherewassomethingwrongwithmybike.Hetookoffhiscoathefelthot.y

3、oucan'tanswerthequestion,Isome6neeWe.二、结果状语从句(1)结果状语从句由sothat,suchthat,so树at。(2)sothaMsuch.that可以互换。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锵容词(副词)+that+从句”。例如：Hewassogladthathecouldn'tsayaword.Motherlivessofarawaythatwehardlyever(几乎不，从来不)seeher.在由suchthat引导的结果状语从句中，such是形容词，它修饰的可以是单数

4、或复数可数名词，也可以是不可数名词；其结构是：".such+a/an形容词+名词+that+从句”。例如：Itwassuchahotdaythatnobodywantedtodoanything.Hehadsuchlongarmsthathecouldalmosttouchtheceiling.(天花板)有时上述两种结构是可以互换的。例如：Itwassuchawonderfulfilmthatallofuswantedtoseeitagain.=Thefilmwassowonderfulthatallofuswantedtoseeitagain.(3)如果名词前由many,much,

5、little,few等词修饰时，只能用so,不用such。例如：Soonthereweresomanydeerthattheyateupallthewildroses.Hehassolittletimethathecan'tgotothecinemawithyou.(4)如果主从句的主语相同，并且从句是否定的形式，可以用too.to.句型转化。例如：Hewassoexcitedthathecouldn'tgotosleepthatnight.=Hewastooexcitedtogotosleep.(5)如果主从句的主语相同，但从句是肯定的形式，可以用adj.+enough替换。

6、例如：Heissooldthathecouldgotoschool.=Heisoldenoughtogotoschool.他够大了，可以去上学。练习：Itishotintheroomwehavetogooutforawalk.Itwasawonderfulmovieallofuswantedtoseeitagain.Therewerelittlewaterinthebottlethebirdcouldn'treachit.三、目的状语从句(1)目的状语从句通常由sothat,inorderthat(为了,以便)引导。例如：Westartedearlysothatwecouldcatch

7、thefirsttrain.Weusedthecomputerinorderthatwemightsavetime.(2)sothat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.=Hegotupearly(inorder)togettoschoolontime.(3)sothat既可引导目的状语从句，又可引导结果状语从句。区别这两种从句的办法有两个：1)目的状语从句里往往带有情态动词can,could,may,might等。2)从意思上看，目的状语从句往往表示的目的很明确。

8、例如：Speakclearlysothattheymayunderstandyou.(目的状语从句)Jackisbadlyillsothathehastorest.(结果状语从句)练习：IhurriedIwouldn'tbelateforclass.Weshouldgobybuswecangetthereearlier.MayIsitnearerIcanseemoreclearly?厂soasto肯定结构)soasnotto否定Z构)ztoinorderthatinorderto补充：eg.Hegotupearlysoastocatchtheearlytrain.eg.Hegotupe

9、arlysoasnottomisstheearlytrain.eg.Hegotupearlytocatchtheearlytrain.eg.Hegotupearlyinorderthathecouldcatchtheearlytrain.eg.Hegotupearlyinordertocatchtheearlytrain.Translatesothat以便；为了他阅读更多书，以便他能知道更多知识。我们努力学习是为了我们能有一个好的未来我起得早是为了能赶上早一点的班车。请打开窗户以便我们能呼吸新鲜空气。你现在一定要走是为了不迟到。小男孩节省每一个硬币是为了他能在母亲节给他妈妈买一份礼物。她在网上

10、购买了一部手机以便她能打电话。说得清楚些，使得他们能听懂你的意思.拿近一些，好让我看得更清楚些。我们现在就准备好，等父亲一来我们就可以走了。so.that.如此（太）以致我太累了，以致我一吃完晚饭就去睡觉了。她太漂亮了以致很多人喜欢她。咖啡太热了以致于我现在不能喝。她如此年轻以致她不能照顾好她自己。男孩跑得太快了以致我不能追上他。他太饿了以致他不能说一个字。男人太强壮了以致他可以抬起这个重箱子。箱子太轻了以致他能背起它。他病得很厉害，今天无法上学。这个小孩以前经常撒谎，以至于现在没有人相信他。她很伤心以至于她伤心地哭了。那门太小了，以至于这只熊走不进去。Translateanswerssoth

11、at以便；为了他阅读更多书，以便他能知道更多知识。我们努力学习是为了我们能有一个好的未来我起得早是为了能赶上早一点的班车。请打开窗户以便我们能呼吸新鲜空气。Hereadsmorebookssothathecanleanmoreknowledge.Westudyhardsothatwecanhaveagoodfuture.IgotupearlysothatIcouldcatchtheearlybus.Pleaseopenthewindowsothatwecanbreathefreshair.你现在一定要走是为了不迟至U。Youmustgonowsothatyouwon'tbelate.小

12、男孩节省每一个硬币是为了他能在母亲节给他妈妈买一份礼物。ThelittleboysavedeverycoinsothathecouldbuyhismotherapresentonMother'sday.她在网上购买了一部手机以便她能打电话。I'llgiveyouallthefactssothatyoucanjudgeforyourself.说得清楚些，使得他们能听懂你的意思.Speakclearly,sothattheymayunderstandyou.拿近一些，好让我看得更清楚些。BringitnearersothatImayseeitbetter.我们现在就准备好，等父亲一

13、来我们就可以走了。Let'sgetreadynowsothatwecanleavewhenFathercomes.so.that.如此（太）以致我太累了，以致我一吃完晚饭就去睡觉了。她太漂亮了以致很多人喜欢她。咖啡太热了以致于我现在不能喝。她如此年轻以致她不能照顾好她自己。男孩跑得太快了以致我不能追上他。他太饿了以致他不能说一个字。男人太强壮了以致他可以抬起这个重箱子。箱子太轻了以致他能背起它。他病得很厉害，今天无法上学。这个小孩以前经常撒谎，以至于现在没有人相信他。IwassotiredthatIwenttobedassoonasIhadsupper.Sheissobeautiful

14、thatmanypeoplelikeher.HecoffeeissohotthatIcan'tdrinknow.Sheissoyoungthatshecan'tlookafterherself.TheboyransofastthatIcouldn'tcatchhim.Hewassoangrythathecouldn'tsayaword.Themanissostrongthathecanlifttheheavybox.Theboxissolightthathecancarryit.Hewassoillthathecouldn'tgotoschooltoda

15、y.Thechildoftentoldliessothatnoonebelieveshimnow.她很伤心以至于她伤心地哭了。Sheissoangrythatshecriedsadly.那门太小了，以至于这只熊走不进去。Thedoorissosmallthatthebearcan'tgoinside.强化练习、单项选择。Wdllstayathomeifittomorrow.2.3.4.5.6.7.8.9.10.12.13.15.16.17.A.rainB.rainsC.israiningD.willrainWedidn'tgohomewefinishedthework.A.si

16、nceB.untilC.becausethoughShewhenIwenttoseeher.A.isreadingB.havereadC.wasreadingD.readstherainstops,weA.Before'llsetoffforthestation.B.UnlessC.AssoonasD.ThoughShelooksforwardeveryspringtotheflower-linedgarden.A.visitB.payingavisitC.walkinD.walkinginMr.WhitehopedheChinathenextyear.A.wouldvisitB.wi

17、llvisitC.visitedD.hasvisitedItoldhimthatthesunintheeast.A.risesB.roseC.hasrisenD.wasrisingShewasA.so,thattiredA.thatshecouldnotmoveaninch.B.such,thatC.very,thatD.so,aswhathehadstolenftomthebank,B.sinceC.becauseD.快划Ididn'tknowwhatA.wasthematterIcouldn'tagrethA.thatyousaidB.isthematteratthemee

18、ting.B.whichyousaidThebadmanranawaytoavoidA.seeingEveryoneexceptJimandJackA.knowwhoisheItistenyearsA.sinceCouldyoutellusA.thatC.C.thematterwaswhatdidyousayandwasfinallyputintoprison.B.tobeseenC.beingseenD.D.D.thematteriswhatyousaidtobecaughtB.knowwhoheisIleftmyhometown.IlearnedalittleRussianA.though

19、C.knowswhoisheD.knowswhoheisC.whetherD.untilMr.BrownlivesinRoom202B.whereIwasatmiddleschool.B.althoughC.untilD.ifC.asifD.when18.Idon'tknowornotitwillraintomorrow.19.20.A.thatB.WhenWhyistheirclassroomsocleanandtidy?A.SinceB.AsC.ifitiscleanedeveryday.C.BecauseD.ForD.whetherCanyoutellmeisgoingtogiv

20、eusatalknextMonday?B.whomC.whosewhatalltheclassmayhear.21. PleaseanswerthequestioninaloudenoughvoiceA.so,thatB.orC.inorderthatD.and22. LiftitupImayseeit.A.thoughB.sothatC.asD.than23. IhurriedIwouldn'tbelateforclass.A.soB.sothatC.ifD.unless24.Weshouldgobybuswecangetthereearlier.A.assoonasB.whereC.inorderthatD.as25.ThedictionaryissoexpensiveIcan'tbuyit.A.becauseB.whenC.thatD.if26. Igotthe