时间状语从句

Grammar考点揭密在复合句中修饰主句中的动词、形容词或副词，起状语作用的从句叫状语从句。状语从句可置主语之前，也可置主语之后。前置时，从句后用逗号与主句分开；后置时，与主句之间无标点符号。

状语从句可分为时间、原因、目的、结果、条件、比较、地点、让步、方式等九类。1.when,while,as区别（不用记复习）when:从句的动作可以在主句动作之前，之后或同时发生，可以和延续性动词和非延续性动词连用eg.Whenhehadfinishedhishomework,hetookashortrest.（从句发生在主句之前）WhenIgototheairport,theguestshadleft.(从句发生在主句之后)Whenweweredancing,astrangercamein.(延续性动词)

Whenhereachedhome,hehadalittlerest.(非延续性动词)while:强调主句表示的动作持续于while所指的整个时间内，只能与延续性动词连用eg：Strikewhiletheironishot.eg:Whileshewastypingtheletter,thetelephonerang.as:

引导的从句表示“当……时；一边……一边……”，主句和从句的动作同时发生，强调伴随。有时可译为“随着”。eg:Theytalkedastheywalked.__As____hegrewolder,hebegantogodeaf.2表示“一…就…”的几个词（也不记哦！）

1)directly,immediately,instantly,assoonas…eg:Directlythemastercamein.everyonewasquiet.eg:ItellhimthenewsassoonasIseehim.2）themoment/minute/instant/secondeg:ThemomentIheardthevoice,Iknewmymotherwascoming.3）nosooner…than,hardly…when

scarcely…when注意:①nosooner/hardly/scarcely位于句首时，用部分倒装②主句用过去完成时，从句用一般过去时eg:Hehadnosoonerarrivedhomethanhewasaskedtostartanotherjourney.他刚到家，就被邀请开始另一旅程.eg:Nosoonerhadhearrivedhomethanhewasaskedtostartonanotherjourney.eg:Hehadhardlyfallenasleepwhenhefeltasofttouchonhisshoulder.他刚要入睡，就感到肩膀上被轻轻一触。Hardlyhadhefallenasleepwhenhefeltasofttouchonhisshoulder.3.

before:趁…(还没有)；…才…；还没来得及…就主句用将来时，从句通常用现在时从句用过去时，主句多用过去完成时eg:Pleasewriteitdownbeforeyouforgetit.趁你现在还没忘，把它记下来after用法正好相反eg:Itwillbefourdaysbeforetheycomeback.他们要过四天才能回来eg:MyfatherhadleftforCanadajustbeforetheletterarrived.eg:Before

she

could

move,

she

heard

a

loud

noise,

which

grew

to

a

terrible

roar.

她还没有来得及动弹，就听见有很响的声音，接着就成了可怕的隆隆轰鸣声。

eg:Afterwehadfinishedthework,wewenthome.It

was

long

before...过了很久才......It

was

not

long

before...没过多久就......

It

will

be

long

before...要过很久才......It

will

not

be

long

before...要不了多久就...eg:It

was

long

before

he

married

Wei

Fang.eg:It

was

not

long

before

he

returned

to

Beijing.

没过多久他就回北京了。eg:It

will

be

long

before

he

goes

abroad.

要过很久他才出国。eg:Itwon’tbelongbeforewemeetagain.

在It+be+时间段+before句型中若主句是一般将来时态，从句是一般现在时表将来若主句是一般过去时，从句也是一般过去时

1.(2004天津)Itwasevening________wereachedthelittletownofWinchester.AthatB.untilC.sinceD.before2.(2004全国)Severalweekshadgoneby________realizedthepaintingwasmissing.A.asB.beforeC.sinceD.when3.(2005广东)TheAmericaCivilWarlastedfouryears______theNorthwonintheend.A.afterB.beforeC.whenD.then4.(2005山东)Itwassometime_______werealizedthetruth.A.whenB.untilC.sinceD.before5.(2006四川)--Whydidn‘tyoutellhimaboutthemeeting？--Herushedoutoftheclassroom_______Icouldsayaword.A.beforeB.untilC.whenD.after6.(2006福建)--Howlongdoyouthinkitwillbe__chinasendsamannedspaceshiptothemoon？--Perhapstwoorthreeyears.AwhenB.untilC.thatD.before7.It

________

long

before

we

________

the

result

of

the

experiment.

A.

will

not

be...will

know

B.

is...will

know

C.

will

not

be...know

D.

is...know

8.Scientists

say

it

may

be

five

or

six

years

_______

it

is

possible

to

test

this

medicinon

human

patients.

A.

since

B.

after

C.

before

D.

when

4.till/until引导的时间状语从句(复习)用在肯定句中，意为“做某事直至某时”，谓语动词为延续性动词eg:WaittillIcallyoueg:Isleptuntilmidnight.2)否定句中，意为“直到某时才发生某动作”，动词为非延续性动词eg:Shedidn’tarriveuntil6o’clock.eg:Ididn’tgotobeduntil/tillmyfathercameback.注:①till不可位于句首，而until可以。notuntil位于句首时，用倒装eg:NotuntilshecamebackdidIleave.

直到她回来我才离开。②notuntil的强调句型为：Itis/wasnotuntil…that…eg.ItwasnotuntilshecamebackthatIleft.5.since：自从…以来主句多用完成时，而since引导的从句多用一般过去时eg:IhavewrittentoherthreetimessinceIcamehere.注：在Itis/hasbeen+时间段+since句型中，如果since引导的从句的谓语动词为非延续性，表示肯定意义；如为延续性动词，则表示否定意义。eg:Itis/hasbeentenyearssincehelefthere.自从他离开这已经十年了eg:Itis/hasbeenfiveyearssincehelivedinBeijing.他不在北京住有5年了Itis/hasbeentenyearssincehewasateacher.他不当老师已经十年了6.everytime,eachtime,nexttime,thefirsttime等名词短语可以引导时间状语从句，表示“每次…,每当…,下次…,第一次…”eg:EverytimeIgotohishome,heisalwaysstudying.我每次去他家，他都在学习。7.bythetime

1)后跟一般现在时，主句要用一般将来时或将来完成时。eg:Bythetimehecomes,I’llhavefinishedthepainting.2)后跟一般过去时，主句要用过去完成时eg:Bythetimehecamebackfromabroad,hishometownhadcompletelychanged.练习题1.HewillhavelearnedEnglishforeightyearsbythetimehe____fromtheuniversitynextyear.AwillgraduateBwillhavegraduatedCgraduatesDistograduateC2.____heleftschoolattwenty,hebegantowritenovels.ASinceBWhenCThenDBut3.Ihadjustlockedmydoor____IrealizedI_____mykeyonthekitchentable.Aas;leftBwhen;hadleftCafter;leftDwhile;hadleft4.____timegoeson,it’sgettingcolderandcolder.AwithBSinceCWhileDAs5.Whenigottothecinema,thefilm____forfiveminutes.AhadbegunBwasonChavebegunDhadbeenon6.Itwasnineo’clock____iarrivedattheairport.AthatBbeforeCwhenDsince7.WewerewatchinganinterestingTVprogramme____suddenlytheelectricitywentoff.AWhenBwhileCuntilDbefore8.ThatwasthefirsttimethatI____tothecompany.AhadgoneBhadbeenChavegoneDhavebeen9.Thedooroftheliftwasclosed____icouldenterit.AasBsinceCuntilDbefore10.HetoldmehewouldcallTom____hegottoBeijing.AimmediatelyBdirectlyCthemomentDA、BandC11.Wewereabouttocallyouup___youcamein.AwhenBwhileCthenDas12.–Whatshouldwedoifit___tomorrow?--Wehavetocarryiton,sincewe’vegoteverythingready.ArainsBrainCwillrainDisraining13.Nosooner___atthedeskthanthetelephonerang.AhadhesatdownBdidhesitdownChehadsatdownDhesatdoen14.iwassofamiliarwithherthatirecognizedhervoice____ipickedupthephone.AafterBthemomentCwhileDbefore15.MrWanglikespopularsongs____hiswifelikesclassicalmusic.AwhenBwhileCifDso16.---Don’tforgettotakethemessagetomyaunt.--____.AYes,Iwill.BNo,Iwon’tCYes,IwouldDNo,Iwouldn’t17.Bythetimeherealizeshe___intoatrap,it’llbetoolateforhimtodoanythingaboutit.AwalksBwalkedChaswalkedDhadwalked是的，我不会的！18.Nancyenjoyedherselfsomuch___shevisitedherfriendsinSydneylastyear.AthatBwhichCwhenDwhere19.---AreyoureadyforSpain?---Yes,Iwantthegirlstoexperiencethat____theyareyoung.AwhileBuntilCifDbefore20.I’msorryyou’vebeenwaitingsolong,butit’llbesometime___Briangetback.AbeforeBsinceCtillDafter21.ThemomentIgothome,IfoundI___myjacketontheplayground.AhadleftBleftChaveleftDwasleaving22.Wefirstmetonatrainin2000.Webothfeltimmediatelythatwe___eachotherforyears.AknewBhaveknownChadknownDknow23.Iusedtolovethatfilm____Iwasachild,butIdon’tfeelitthatwayanymore.AonceBwhenCsinceDalthoughGoodb