原因、结果、目的状语从句讲解和练习(答案)

1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’sgoforawalk.既然雨停了，我们出去散散步吧。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：Ashehasnocar,hecan’tgetthereeasily.Sincewehavenomoney,wecan’tbuyit.(4)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.小试牛刀：Iwaslateforclassyesterday_______therewassomethingwrongwithmybike.Hetookoffhiscoat_______hefelthot.youcan’tanswerthequestion,I’llasksomeoneelse.结果状语从句(1)结果状语从句由so…that,such…that,sothat引导。(2)so…that语such...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+形容词（副词）+that+从句”。例如：Hewassogladthathecouldn’tsayaword.Motherlivessofarawaythatwehardlyever（几乎不，从来不）seeher.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；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,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。例如：Heissooldthathecouldgotoschool.=Heisoldenoughtogotoschool.他够大了，可以去上学。小试牛刀：Itis___hotintheroom___wehavetogooutforawalk.Itwasawonderfulmovieallofuswantedtoseeitagain.2Therewerelittlewaterinthebottlethebirdcouldn’treachit.Heissoyoungthathecouldn’tgotoschool.=.Theclassroomissobigthatitcanhold100person.=.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：Westartedearlysothatwecouldcatchthefirsttrain.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。例如：Speakclearlysothattheymayunderstandyou.(目的状语从句)Jackisbadlyillsothathehastorest.(结果状语从句)小试牛刀：IhurriedIwouldn'tbelateforclass.Weshouldgobybus___wecangetthereearlier.MayIsitnearerIcanseemoreclearly?一、单项选择。1．We’llstayathomeifit______tomorrow.A．rainB．rainsC．israiningD．willrain2．Wedidn’tgohome_____wefinishedthework.A．sinceB．untilC．becauseD．though3．She______whenIwenttoseeher.A．isreadingB．havereadC．wasreadingD．reads4．_____therainstops,we’llsetoffforthestation.A．BeforeB．UnlessC．AssoonasD．Though5．Shelooksforwardeveryspringto____theflower-linedgarden.A．visitB．payingavisitC．walkinD．walkingin6．Mr.Whitehopedhe______Chinathenextyear.A．wouldvisitB．willvisitC．visitedD．hasvisited7．Itoldhimthatthesun______intheeast.A．risesB．roseC．hasrisenD．wasrising8．Shewas_____tired_____shecouldnotmoveaninch.A．so,thatB．such,thatC．very,thatD．so,as9．A．thatB．sinceC．becauseD．10．Ididn’tknowwhat______.A．wasthematterB．isthematterC．thematterwasD．thematteris11．Icouldn’tagreewith______atthemeeting.3A．thatyousaidB．whichyousaidC．whatdidyousayD．whatyousaid12．Thebadmanranawaytoavoid_______andwasfinallyputintoprison.A．seeingB．tobeseenC．beingseenD．tobecaught13．EveryoneexceptJimandJack______.A．knowwhoisheB．knowwhoheisC．knowswhoisheD．knowswhoheis15．Itistenyears______Ileftmyhometown.A．sinceB．IfC．whetherD．until16．Couldyoutellus______Mr.BrownlivesinRoom202？A．thatB．whereC．untilD．if17．IlearnedalittleRussian_____Iwasatmiddleschool.A．thoughB．althoughC．asifD．when18．Idon’tknow______ornotitwillraintomorrow.A．thatB．WhenC．ifD．whether19．—Whyistheirclassroomsocleanandtidy？—______itiscleanedeveryday.A．SinceB．AsC．BecauseD．For20．Canyoutellme______isgoingtogiveusatalknextMonday？A．whoB．whomC．whoseD．what21.Pleaseanswerthequestioninaloudenoughvoice___alltheclassmayhear.A.so,thatB.orC.inorderthatD.and22.Liftitup___Imayseeit.A.thoughB.sothatC.asD.than23.Ihurried___Iwouldn'tbelateforclass.A.soB.sothatC.ifD.unless24.Weshouldgobybus___wecangetthereearlier.A.assoonasB.whereC.inorderthatD.as25.Thedictionaryissoexpensive___Ican'tbuyit.A.becauseB.whenC.thatD.if26.Igotthere___late___Ididn'tseehim.A.too;toB.such;thatC.so;thatD.so;as27.Itis___hotintheroom___wehavetogooutforawalk.A.such;thatB.so;thatC.as;asD.such;as28.Hehas___aninterestingbookthatwewanttoreadit.A.soB.suchC.thesameD.as29.Bettydidn'tgotoseethefilmyesterday___shewasill.A.becauseB.butC.untilD.if30.Hetookoffhiscoat_______hefelthot.A.becauseB.asC.ifD.since31.Theladywasfatthatshewasnotfitforthisskirt.A.tooB.asC.suchD.so32.OurPEteacherwalkswecan’tcatchupwithhim.A.soquickthatB.tooquicklythatC.soquicklythatD.tooquicklythat33.Mrs.Greenisthatsheoftengivescandiestothechildren.A.soaniceladyB.suchaniceladyC.asoniceladyD.toonicealady4答案：1-5BBCCD6-10AAADA11-15DCDBA16-20DDDCA21-25CBBCC25-30CBBAA31-DCB