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1、条件状语从句连词用法例句if意为：如果Difficultiesarenothingifwearenotafraidofthem.unless意为:“如果不滁非，unless和if.not同义，通常二者可以换用。Weshallgotheretomorrowunlessitrains.=Weshallgotheretomorrowifitdoesn,train.aslongas意为：只要Aslongasyouworkhard,youW川succeed.时间状语从句连词用法例句when1 .意为：“当时”，从句的动词可用延续性动词，也可用非延续性动词2 .意为“这时”或在那时”WhenIcamein
2、totheroom,hewaswritingaletter.IwaswalkingalongthestreetwhensuddenlyTompattedmeontheshoulder.while1.意为：“在某一段时间里”,“在期间”；WhiIe引导的动作必须是嗡性的Whileitwasraining,theywentout.as1 .意为：“T一边”,引导持续性动作，强调主句和从句的动作同时发生2 .意为“随着”Hehurriedhome,lookingbehindashewent.Astimegoesby,IlikeChinabetter.before意为：“在之前，才就”Beapupil
3、beforeyoubeeateacher.IfinishedmytaskbeforeIwenthome.after意为：“在之后”Hearrivedafterthegamestarted.tilluntil1 .若主句动词是持续性动作，常用肯定式,表示“直到为止”2 .若主句动词是瞬间动词，要用否定式not.until表示直.才”Wewaitedtill/untilhecameback.Shedidntstopworkinguntilelevenoclock.Notuntilelevenoclockdidshestopworking.since1意为：“自从以来”，主句常用现在完成时,从句用一
4、般过去时2.its+时间+since从句GreatchangeshavetakenplaceinChinasince1978.Shehastaughtinthisschoolsinceshecametothiscityin1989.Ifsthreeyearssinceshecametothiscity.assoonas意为：“一就”AssoonasIarriveinShanghai,llwritetoyou.让步状语从句连词用法例句thoughalthough意为：“虽然”，不能再用but,但可以与yet或still连用。though/alth。Ugh意义相同，前者通俗、口语化，后者正式多放主
5、句的前面。Although/Thoughhewasoversixty,(yet)hebegantolearnFrench.Wewerenottiredthough/althoughwehadworkedallday.evenifeventhough意为：“即使”多用于书面语中。llgoevenif/thoughitrainstomorrow.as意为：“即使，尽管”，as引出的状语Childasheis,heknowsalot.从句多用于书面语且从句常放在句首，语序部分倒装。Coldasitis,thechildrenplayoutdoors.=Thoughitiscold,thechildr
6、enplayoutdoors.nomatterwho/whatwhenhow.nomatter+特殊疑问词与WheVer引导的让步状语从句意义基本一样意为“无论”，WheVer不只可以引导让步状语从句还可以引导名词性从句,而nomatterwh只能引导让步状语从句。Doitnomatterwhatotherssay.Nomatterhowbusyhewas,hestudiedEnglisheveryday.Whateverhappens,weshallnotloseheart.Whoeveres,hewillbeglad.whever(whateverwhoever.)结果状语从句连词用法例句
7、so.that意为：“如此以至于”，常见结构如下：so+adj./adv.+that.so+many/few（+可数名词复数）+that.so+much/Iittle（+不可数名词）+that.so+adj.+aan+可数名词单数Hewassogladthathecouldn,tsayaword.Motherlivessofarawaythatwehardlyeverseeher.Soonthereweresomanydeerthattheyateupallthewildroses.Hehassolittletimethathecan,tgotothecinemawithyou.Itissoi
8、nterestinganovelthatallofuswanttoreadit.such.that意为：“如此以至于”，常见结构如下：such+aan+adj.+可数名词单数+thatsuchadj.+可数名词复数+thatsuch+adj.+不可数名词+thatItissuchaninterestingnovelthatallofuswanttoreadit.Hegavesuchimportantreasonsthathewasexcused.Hemadesuchrapidprogressthathedidverywellinthemidterm.SUCh.that与Sothat的区另J:名
9、用SUCh,形、副So,多多少少也用so。原因状语从句连词用法例句becausebecause用来回答Why的问题,语气最强一般放在主句之后IwaslateyesterdaybecauseIwasill.sinceSinCe表示既然或全已知的理由，稍加分析即可表明的原因，多放句首Sinceeveryoneishere,letsbeginourmeeting.as从句常放在句首，说明次要的原因，主句说明结果，常用于口语中Ashedidn,tknowmuchEnglish,helookedupthewordinthedictionary.forfor连接的是并列句Itmusthaverainedl
10、astnight,forthegroundisstillwet.【注】because,as,SinCe,for不能与S。同时使用目的状语从句连词用法例句sothatinorderthat意为：以便；为了状语从句中常用情态动词maymightCan/等放在动词之前，从句往往放在主句之后,主从句之间不用任何标点符号。注意s。that和inOrderthat的转换。IshallwritedownyourtelephonenumbersothatImaynotforget.Theyworkedharderthanusualinorderthattheycouldfinishtheworkaheadof
11、time.方式状语从句连词用法例句asifZasthough意为：仿佛似的从句中的谓语多用虚拟语气，表示与事实相反。HebehavedasifZasthoughnothinghadhappened.as(just)as.so.意为：”正如就像”.as引导的从句通常位于主句后。Alwaysdotheothersasyouwouldbedoneby.Justaswesweepourrooms,soweshouldsweepbackwardideasfromourminds.地点状语从句连词用法例句wherewhereverWhere意为:在.的地方”WhereVerB为：无论在哪里where与wh
12、erever意义基本相同，但后者语气较强，多用于书面语。Wherethereiswater,thereislife.Whereveryougo,youmustobeythelaw.比较状语从句连词用法例句as.asnotsoas.asas.as意为:“和一样，notso/asas意为:“和不一样”，在实际运用中，常常省略与主句部分相同的词Hewritesascarefullyashissister(writes/does).比较级+than意为：“比”Theearthisbiggerthanthemoon(is).HeboughtfewerbooksthanI(did).the+比较级,the+比较级意为：“越越”Themoreyouread,thebetteryouunderstand.Theharderyouwork,thegreaterprogressyouwillmake.Thesooner,thebetter.
