时间状语从句精讲

时间状语从句Conclusion:when/while/as引导时间状语从句时的中文意义：whenwhileas1.当….的时候2.这时,正在这时1.当…的时候(从句的谓语必须是延续性动词）2.而,然而(强调两者对比）3.虽然1.一边….一边….2.随着….3.考虑到;既然(consideringthat)Backtoschool连接词类别作用例句asas表示“当……的时候”，往往和when/while通用，但它着重强调主句与从句的动作或事情同时或几乎同时发生。1.ShecameupasIwascooking.（同时）2.Therunnersstartedasthegunwentoff.（几乎同时）when既可以表示在某一点的时候，又可表示在某一段时间内。when可以和延续性动词连用，也可以和短暂性动词连用；而while和as只能和延续性动词连用;when从句的谓语动词可以在主句谓语动作之前、之后或同时发生；while和as从句的谓语动作必须是和主句谓语动作同时发生。1.Whenwewereatschool,wewenttothelibraryeveryday.（在一段时间内）2.Sorry，Iwasoutwhenyoucalledme．（call为短暂性动词）对不起，你打电话时我刚好外出了。3.WhenIgottotheairport，theguestshadleft．（gotto后发生）当我赶到飞机场时，客人们已经离开了。whilewhile意思是“当……的时候”或“在某一段时间里”。从句动作和主句动作同时发生，且从句动作为延续性动词时，when，while，as都可使用。主句中的动作或事情是在从句中的动作或事情的进展过程中发生，从句中的动词一般要用延续性动词。1.When／While／Asweweredancing，astrangercamein．（dance为延续性动词）。2.Pleasedon’ttalksoloudwhileothersareworking.延续性动词表达的动作能够延续，如：keep保存，维持；walk走路；read阅读等；非延续性动词也称瞬间动词，所表达的动作不能够延续。如：hear听到；return归还；see看见。A:

when,while,as的区别：1._______hebrokein,wewerehavinganEnglishclass.2.I

was

about

to

go

out

to

play

basket-ball_______it

began

to

rain

hard.

3.Thetrainhadgone

______Igottothestation4.Youshallborrowthebook________Ihavefinishedreadingit．whenwhenwhen

when

when,while,as的区别：5.__________________Iwaswalkingdownthestreet,Icameacrossanoldfriendofmine.6.Thelittlechildrensanghappily______theywalkedalong.7.____summercomes,itisgettinghotterandhotter.8______summercoming,itisgettinghotterandhotter.When/Whileas

AsWithB:1):由assoonas,immediately,directly,instantly,themoment,theinstant,theminute,等引导的时间状语从句。这些连词都表示“一……就”。

2):upon(on)+V-ing/n.at+n.A:Thecryingboysmiledatthesightofhismother.B:Onarriving(leaving,returning…)3):Nosooner…than=hardly…whenhardly…when

nosooner…than我刚一到家，就下雨了。Ihadhardlygothomewhenitbegantorain.=HardlyhadIgothomewhenitbegantorain.=NosoonerhadIgothomethanitbegantorain.since+过去一个时间点(如具体的年、月、日期、钟点）

C.sinceIhavebeenheresince2002.3)since+从句Greatchangeshavetakenplacesinceyouleft.2)since+一段时间+ago

Ihavebeenheresincenineyearsago.Itis/hasbeen+一段时间＋since从句(did)Ithasbeen10yearssinceI

smoked.(=Igaveupsmoking/droppedsmoking)我不抽烟已有10年了.延续性动词:反过来翻译短暂性动词:直译

主要有every

time(每次)，each

time(每次)，(the)

next

time(下次)，any

time(随时)，(the)

last

time(上次)，the

first

time(第一次)：

D.表示“上次”、“下次”、“每次”等的时间连词

Ithoughtherniceandhonest______Imether.firsttime

B.forthefirsttimeC.thefirsttime

D.bythefirsttime

E.由bythetime引导的时间状语从句。

在一般情况下，如果从句的谓语动词用一般过去时，主句的谓语动词用过去完成时；如果主句的谓语动词用一般现在时，主句的谓语动词用将来完成时。例如：1)Bythetimeyoucameback,I_________(finish)thisbook.2)Bythetimeyoucomeheretomorrow,I_________________(finish)thiswork.hadfinishedwillhavefinishedF.till/until(在句首、与not无间隔连用及在强调句中只用until)

Wewaitedtill(until)hecamebackShedidn’tstopworkinguntileleveno’clock.如主句动词是延续性动作，常用肯定式，表示“直到…为止”;如主句动词是瞬间动词，常用否定式，表示“直到…才”我们一直等到他回来。 她到11点钟才停止工作。notuntil句型与强调句型结合Ididn’tgotosleepuntilhecameback.与倒装句式结合ItwasnotuntilhecamebackthatIwenttosleep.NotuntilhecamebackdidIgotosleep.G:

.before的用法1).表示“在……之后……才”。

Wehadsailedfourdaysbeforewesawland.“…2).…还没来得及……就……”。HeranoutoftheroombeforeIcouldsayaword.3).“在……之前就……”。Manypeopleleftforhomebeforethefilmended4).和hardly连用，”hardly…before”表示“刚一……就……”。该结构主句常用过去完成时，当hardly位于句首时要用倒装语序，例如：A:Ihadhardlysatdownbefore(when)thetelephonerang.B:Thegirlhadhardlyrungthebell——thedoorwasopenedsuddenly,andherfriendrushedouttogreether(2010福建高考）.

A.before

B.until

C.as

D.since

before表示“要过多久才…”

Itwillbe(is)+一段时间+before从句(does)

要过……才能做Itwillnotbe+一段时间+before从句

要不了……就能做Itwas+一段时间+before从句(did)过了……做了……Itwasnot+一段时间+before从句(did)

没过……做了……对比训练与巩固____heheardthis,hegotveryangry.2.ImetLucy____Iwaswalkingalongtheriver.3.____achild,helivedinthecountryside.A.whenB.whileC.as对比训练1ABC1.Wewereabouttoleave____itbegantorain.2.ShethoughtIwastalkingaboutherson,____,infact,Iwastalkingaboutmyson.3.HardlyhadIfinishedmycomposition____thebellrang.

A.whenB.whileC.asD.during对比训练2ABA对比训练31.Itwillbeyears____wemeetagain.2.Itistenyears____Icametothistown.3.Itistenyearsago____Icametothistown.4.ItwasApril29,2011____PrinceWilliamandKateMiddletonwalkedintothepalacehalloftheweddingceremony.(2011福建高考）A.whenB.thatC.beforeD.sinceCDBA1.—Itcostme20yuantogettotheQuanzhouMuseumyesterday.—Well,itwasawasteofmoneytotakeataxi__________youcouldhavegonebybusaswell.(11泉州市质检）A.

whenB.whileC.unlessD.because2.Youneverreallyknowwhetheryoucouldhandlefailure________youcomefacetofacewithit.(11厦门市质检）A.untilB.afterC.whenD.while3．Becauseoftheheavytraffic，itwasalreadytimeforlunchbreak

shegottoheroffice．（10四川）A．sinceB．thatC．whenD．until4.Johnthinksitwon’tbelong

heisready。forhisnewjob.（10陕西）

A.whenB.afterC.beforeD.sinceA5.Howcanyouexpecttolearnanything

youneverlisten？(06山东31)

A.incaseB.evenifC.unlessD.when6.Shehadjustfinishedherhomework____

hermotheraskedhertopracticeplayingthepianoyesterday(09福建33).A.whenB.whileC.afterD.since7.Youcan’tborrowbooksfromtheschoollibrary______yougetyourstudentcard.(09上海32)A.beforeB.ifC.whileD.as8.Nancyenjoyedherselfsomuch

shevisitedherfriendsinSydneylastyear.(08福建28)A.that B.whichC.whenD.where9.____Ireallydon’tlikeart，Ifind