状语从句精讲课件

状语从句状语从句在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语或是整个句子。状语从句状语从句状语从句状语从句时间状语从句地点状语从句原因状语从句目的状语从句结果状语从句条件状语从句方式状语从句让步状语从句比较状语从句状语从句状语从句时间状语从句时间状语从句引导时间状语从句的连词有：when,while,as,themoment,before,after,till,until,since,assoonas等。Iwilltellhimwhenhecomesback.时间状语从句引导时间状语从句的连词有：when,whil连接词when的用法小结when引导的时间状语从句的谓语动词可以是可延续也可以是表短暂性动作的动词(非延续性)。如Whenthefilmended,thepeoplewentback.WhenIlivedthere,Iusedtogototheseashore.2.可用作并列连词，其意义为“那时，这时”，相当于

andatthis/thattime。常用于下列句式：(刚要……这时突然……)记忆

Sb.wasdoingsomethingwasabouttodosth+when…wasonthepointofdoingsth.hadjustdonesthIwaswalkingalongthestreet,whenImethimIwasabouttofallasleepwhenmysistercamein.3.还可以表示原因“既然”，相当于since;consideringthat。如：

Whydoyouwalkwhenyouhaveacar?

既然你有车为什么要步行呢？.连接词when的用法小结连接词when的用法1when引导的时间状语从句的谓语动词可以是延续性动词也可以是表短暂性动作的动词(非延续性)。Whenthefilmended,thepeoplewentback.WhenIlivedthere,Iusedtogototheseashore.连接词when的用法1when引导的时间状语从句的谓语动词2

when表示“就在这时”

在下列结构中，表示某件事正在发生或刚刚发生，另一动作同时发生。beabouttodo…when…bedoing…when…haddone…when…Wewereabouttostartwhenitbegantorain.Iwasplayingcomputergameswhenmomcamein.2when表示“就在这时”在下列结构中，表示某件We连接词while的用法1.while引导的动作必须是持续性的，在……期间，往往指一段时间。如：Whileweweretalking,hecamein.Pleasedon’ttalksoloudwhileothersareworking.连接词while的用法1.while引导的动作必须是持续性2.while作为并列连词，意为“而，却”，侧重主句动作和从句动作相对比。Wearecleaningtheclassroomwhiletheyareplayingthefootball.

3.while可表示尽管，相当于although。2.while作为并列连词，意为“而，却”，侧重主句动作和※while含义：WhileIwaswalkingdownthestreet,Icameacrossanoldfriend.(while=_______)Helikespopmusic,whileIamfondoffolkmusic.(while=_______)WhileIreallydon’tlikeart,Ifindhisworkimpressive.(while=___________)Whilethereislifethereishope.(while=_______________)whenalthoughaslongasbut※while含义：whenalthoughaslong连词when，while，as的用法1．while引导的时间状语从句的谓语动词必须是可延续的，而when引导的时间状语从句的谓语动词是可延续的，也可以是表短暂性动作的动词。When/Whilehewaseatinghisbreakfast,heheardthedoorbellring.WhenIstoppedmycar,amancameuptome.

(不可延续，短暂性动词，只可以用when，不可用while)连词when，while，as的用法1．while引导的时间2．表示“随着……”，连词用as，不用when或while。Asthedaywenton,theweathergotworse.3如果主句表示的是短暂动作，而从句用延续性动作的进行时态表示在一段时间内正在进行的动作时，when,while与as可互换使用。When/While/AsIwaswalkingdownthestreet,Icameacrossanoldfriendofmine.2．表示“随着……”，连词用as，不用when或while。4.从句动作发生在主句动作之前时，只能用when引导这个从句，不可用as或while。Whenyouhavefinishedyourwork,youmayhavearest.

Whenthechildrenhadgonetobed,shebegantoprepareherlessons.4.从句动作发生在主句动作之前时，只能用when引导这个从句连接词beforeWehadsailedfourdaysandfournightsbeforewesawland.Wehadn’trunamilebeforehefelttired.Pleasewriteitdownbeforeyouforgetit.BeforeIcouldgetinaword,hehadmeasuredme.“……才”

“不到……就”“趁……”“还没来得及”连接词beforeWehadsailedfourdaBefore从句中谓语不用否定式

Beforetheyreachedthestation,thetrainhadgone.Before从句中谓语不用否定式Beforetheyre句型Itwillbe/was＋一段时间＋before…“还要过多久才……”句型Itwillbe/wasnot＋一段时间＋before…“多久就……”Itwillbetwoyearsbeforeheleavesthecountry.Itwasn’ttwoyearsbeforeheleftthecountry.

句型Itwillbe/was＋一段时间＋before…“连接词since在itis/hasbeen+段时间+since从句中，时间的计算从since从句的动作完成或状态结束时算起。ItisthreeyearssinceIsmokedacigar.ItisthreeyearssinceIbegantosmoke.我不吸烟有三年了。我吸烟有三年了。连接词since在itis/hasbeen+段时间+since在itis/hasbeen+段时间+since从句中，时间的计算从since从句的动作完成或状态结束时算起。如：Itisthreeyearssinceshewasinourclass.Itisthreeyearssincehelivedhere她离开我们班有三年了。他不住这儿有三年了。比较itisthreeyearssinceIsmokedacigar.ItisthreeyearssinceIbegantosmoke.

我不吸烟有三年了。我吸烟有三年了since在itis/hasbeen+段时间+sinNosoonerthan---一……就……Hehadnosoonerarrivedthanhewentawayagain.Nosoonerhadhearrivedthanhewentawayagain..nosooner…than…用于句首要求倒装Hardly…when…Scarcely…when…Nosoonerthan---一……就……Nosotill，until和not…until的用法1.until/till引导时间状语从句用于肯定句时，主句的动词是延续性动词，表示动作或状态一直持续到until/till所表示的时间，意为“某动作一直延续到某时间点才停止”。Wewaiteduntilhecame.2用于否定句时，主句谓语动词是非延续性动词，从句为肯定，意为“某动作直到某时间才开始”Hewon’tgotobedtill/untilshereturns.till，until和not…until的用法1.unt3．till不可以置于句首，而until可以。如：

4．not…until句型中的强调和倒装说法：

UntilyoutoldmeIhadnoideaofit.ItwasnotuntilyoutoldmethatIhadanyideaofit.

NotuntilyoutoldmedidIhaveanyideaofit.3．till不可以置于句首，而until可以。如：UntilItwasn’tuntilnearlyamonthlater

___Ireceivedthemanager’sreply.A.sinceB.whenC.asD.that2.Itwasnearlyamonth_________Ireceivedthemanager’sreply.

3.Itwasnearly9o’clock_________Ireceivedthemanager’sreply.

4.Itwasnearlyat9o’clock

_________Ireceivedthemanager’sreply.

beforewhenthatItwasn’tuntilnearlyam考点:易混淆句型itis+时间+sincebeforewhenthatItisfiveyears______hefinishedhisresearch.Itwasfiveyears______hefinishedhisresearch.Itwasfiveyearslater_______hefinishedhisresearch.

Itwas5o’clock_____hegothome.Itwasat5o’clock_____hegothome.whenthatsincebeforethat考点:易混淆句型whenthatsincebeforethOnceyouseehim,youwillneverforgethim.Once---一但……就……Onceyouseehim,youwillnev引导状语从句的连接词有:If,unless,aslongas,incase,providedthat,onconditionthat条件状语从句引导状语从句的连接词有:If,unless,aslonIf---如果Ifyoudon’thurryup,youwillmisstheplane.Ifitsnowstomorrow,theflightwillbecanceled.Ifyouleaveat6o’clocktomorrowmorning,you’dbettergettobednow.If---如果Ifyoudon’thurryup,Unless---如果不,除非=ifnotWecan’tgetthereontimeunlesswebooktheearliestflight=Wecannotgetthereontimeifwedon’tbooktheearliestflight.Unless---如果不,除非=ifnotWecaDon’ttroubletroubleunlesstroubletroublesyou.Hewillnotjoinusunlesshechangeshismind.Don’ttroubletroubleunlesstAslongas---只要Wewillsucceedaslongaswekeepontrying.Youcan’tplaygamesaslongasyouremembertherules.Amanisnotoldaslongasheisseekingsomething.Aslongas---只要WewillsucceAs(so)faras---据……所知AsfarasIknow,hespeaksEnglishverywell.As/SofarasIknow,heisanexpertonDNA.As(so)faras---据……所知AsfarIncase---假使,如果万一Theplanecannottakeoffincaseitrains.Sendusamessageincaseyouhaveanydifficulty.Incase---假使,如果万一TheplaneProvidedthat如果,有时省略thatTheplanewillbeingoodconditionprovidedthatitistakencareofcarefully.Youcanbecomeastewardessprovidedthatyouareingoodshapeandyouhavegotthepropereducation.Providedthat如果,有时省略thatTheOnconditionthat---条件是…Hesaidthathewouldcometothemeetingonconditionthatnooneaskedhimtospeak.ThemotherpromisedtothesontobuyhimatoyairplaneonconditionthathepasseshisEnglishtest.Onconditionthat---条件是…Hes注:主从句的动作发生在将来时，则主句用将来时,从句用一般现在时。Ifhearrivestomorrow,Iwillbewaitingforhimattheairport.Hesaidhewouldnotleaveunlessitwasfinenextday.注:主从句的动作发生在将来时，则主句用将来时,从句用一般现地点状语从句地点状语从句只有两个连词:Where,wherever地点状语从句地点状语从句只有两个连词:Where,wheWhere---在……地方Putthemedicinewhereyoucaneasilygetit.Wherethathighbuildingstands,thereusedtobesomelow,desertedhouses.Wherethereisawill,thereisaway.Where---在……地方PutthemedicinWherever---无论哪里Hefollowsherwherevershegoes.Whereveryouare,Iwillberighttherewaitingforyou.Wherever---无论哪里Hefollowshe

在地点状语从句之前，不要使用介词。

【误】Youshouldputthebookatwhereitwas.【正】Youshouldputthebookwhereitwas.

你应该把书放在原来的地方。

【误】Weshouldgotowhereweareneededmost.【正】Weshouldgowhereweareneededmost.

我们应该到最需要我们的地方去。在地点状语从句之前，不要使用介词。原因状语从句because,as,since,nowthat,和consideringthat,for,seeingthat这六个连词都用于表示表示原因,但在语气上一个比一个弱.原因状语从句because,as,since,nowBecause---因为,通常从句放在主句后.MrSmithwasveryupsetbecausehecouldn’tfindhisluggage.Hesaidthathecouldn’tworkbecausethecomputerwasoutoforder.Because---因为,通常从句放在主句后.MrSm

because和for的区别。

for是并列连词，只用于连接表示原因的分句，因此不能用于句首。because表示原因时，可位于句首。

【误】Forhedidnotobeytherules,hewaspunished.【正】Becausehedidnotobeytherules,hewaspunished.because和for的区别。As---因为,通常放在句首Asitisquitewindytoday,hedecidesAsheishonestandmodest,allhisfriendslikehim.As---因为,通常放在句首AsitisquitSince---既然因语气较弱,常译为既然Sinceeverybodyhascome,wecansetoff.Sincethepurserdidn’ttelluswhattodo,wecanrelax.Since---既然因语气较弱,常译为既然SinceNowthat---既然Nowthatyouarehere,youcanjoinus.Nowthatallairlinesofferdiscountprices,weshoulddothesame.Nowthat---既然Nowthatyouarconsideringthat---顾及到Consideringthattheyarejustbeginners,theyaredoingquiteagoodjob.consideringthat---顾及到Consiseeingthat---由于Seeing(that)quiteafewpeoplewereabsent,wedecidedtoputthemeetingoff.seeingthat---由于Seeing(tha结果状语从句引导结果状语从句的连词有：that,sothat,so…that…such…that结果状语从句引导结果状语从句的连词有：that,sothSo…that---太……以至于so后面应用形容词或副词,有时省略so只用thatBoeing747issolargethatpeopleliketocallitjetbomb.Theflightscheduledsoearlythatnobodywantedtolookonit.So…that---太……以至于so后面应用形容词Sothat---因而，以便，为了有时so可以省去CanyoumoveyourluggagealittlebitawaysothatIcanputmineintheoverheadbintoo.Speaklouderpleasesothatthepeopleatthebackcanhearyou.Sothat---因而，以便，为了有时so可以省去Such…that…---太……以至于用法与so…that相同，但such后面应用名词。Theforeignvisitorwassuchafastspeakerthatnobodycouldunderstandhim.Such…that…---太……以至于用法与so…t

6.目的状语从句引导目的状语从句的主要连词有:that,sothat,inorderthat,forfearthat,lest6.目的状语从句引导目的状语从句的主要连词有:that,Let’stakethefrontseats(so)thatwemayseemoreclearly.(So)that---以便,从句中常常使用一些情态动词，如：can,could,may,might,should等Let’stakethefrontseats(soinorderthat---为了,与sothat相同从句中常常使用一些情态动词，如：can,could,may,might,should等Schoolwasclosedearlyinorderthatthechildrenmightgohomeaheadofthestorm.inorderthat---为了,与sothatforfearthat---生怕;为了防止(某事发生)Hetookthenamedownforfearthatheshouldforgetit.Theinstructoremphasizedontheissuethreetimesforfearthatthestudentsdidnotpayenoughattentiontotheproblem.forfearthat---生怕;为了防止(某事发incase---万一Bettertakemoreclothesincasetheweatheriscold.Youshouldbringadictionaryincaseyouneedit.Pleasetakeanumbrellaincaseitrains.incase---万一BettertakemoLest---以防万一Themandecidedtotellhisbossthefactlesthewouldbeangrywithhim.Themanageroftheworkshopaskedhisstafftoworkovertimelesttheywouldn’tfinishthetaskontime.Lest---以防万一Themandecidedt比较状语从句引导比较状语从句的连词有：As…as…,notso(as)…as…,.…than…,themore…themore...比较状语从句引导比较状语从句的连词有：As…as…,noAs…as…---像……一样Ifyoudon’twanttomisstheflight,youneedtobeattheairportasearlyaspossible.Mygrandmatoldmethathereyesightwasasgoodas10yearsbefore.Cultivationtothemindisasnecessaryasfoodforthebody.As…as…---像……一样Ifyoudon’twNotso(as)…as…---不像……ThejobisnotsodifficultasIthoughtitwouldbe.Theflightwasnotso/asharmfulasthecaptainpredicted.Notso(as)…as…---不像……Thej…than…---比……怎么样，用于事物间的比较，more后面用形容词或副词Peoplebelievethatbeingastewardessisbetterthanmostoftheotherjobs.IpersonallythinkthattheAmericanmoviesaremoreinterestingthanChineseones…than…---比……怎么样，用于事物间的比较，moreThemore…,themore---越……越Themorehelistenedtothatsong,thelessheenjoyedit.Themorethingsamanisashamedof,themorerespectableheis.Themore…,themore---越……越T必背：常见的比较句型。Hisfatheristwicedoubleasoldashe(is).Hisfatheristwotimesolderthanhe.

他爸爸的年龄是他的两倍。

Ournewschoolisthreetimesbiggerthantheoldone.

我们的新学校比老学校大三倍。

Ournewschoolisfourtimesasbigastheoldne.

我们的新学校是老学校的四倍大。

Ournewschoolisfourtimesthesizeoftheoldone.

我们的新学校是老学校的四倍。必背：常见的比较句型。Hisfatheristwic8.让步状语从句引导让步状语从句的连词有：Although,though,as,evenif,eventhough,nomatter,however,whatever,while,whether8.让步状语从句引导让步状语从句的连词有：AlthoughAlthough,though---虽然although和though可以互换，但although常放在句首。Though可以用于倒装。Althoughitwasraining,theplanemanagedtotakeoff.Although

itwasnothisfault,hetookalltheblame.Although,though---虽然althougThoughhedidhisbest,hedidn’tsucceed.Child

though

hewas,hedidquitewell.Thoughhedidhisbest,hedidAs---尽管as

引导让步状语从句时，句子通常倒装。可与though

互换。Busy

as

heis,henevermissesafootballmatch.Hard

as

sheworks,shemakeslittleprogress.As---尽管as引导让步状语从句时，句子通常倒装Evenif/eventhough---即使Evenif

youdon’tlikeyourboss,youshoulddoyourwork.Evenif

youarenotfondofflowers,youshouldn’tmissthechrysanthemumexhibition.Evenif/eventhough---即使EvenEventhough

Imightbewrong,Iwillgomyway.Eventhough

hisdeandidn’tmeanit,hestillfeltembarrassed.EventhoughImightbewrong,However---不论，however引导让步状语从句时，句子通常倒装Hecouldn’tgetthereontimehowever

fasthedrove.Thefathercouldn’tmakehisdaughtersmilehowever

hardhetried.However---不论，however引导让步状语Nomatter(what,when,where,how)---无论（什么，何时，何地，怎样）Theoldmanwouldn’tbelieveanythingnomatterwhat

yousaid.Pleasetellmetheresultnomatterwhen

yougetit.Nomatter(what,when,where,Hewouldn’tforgivemenomatterhow

hardIbeggedhim.Iwillfindyounomatterwhere

youhide.Hewouldn’tforgivemenomattWhatever---不管Whateverotherpeoplemaysay,shewon’tchangehermind.Whatever

youdo,itwon’taffectourplan.Whatever---不管WhateverotherWhile---尽管While

Ihavesympathyforyou,Ican’thelpyou.While

it’snoneofmybusiness,Iwillwatchyou.While---尽管WhileIhavesympatWhether---不管，常与ornot连用Whetherheisgoodornot,thecompanydecidedtosendhimabroad.Whether

hisproposalispracticalornot,thedepartmentplanstoadopt.Whether---不管，常与ornot连用Wheth9.方式状语从句方式状语从句常由:as,asif,asthough9.方式状语从句方式状语从句常由:as,asif,as---与……一样DoinRomeas

theRomansdo.Leavethingsastheyare.as---与……一样DoinRomeastheasif,asthough---仿佛,由asif或asthough引导的从句中可用虚拟语气Shestoodatthedoorasif(=asthough)

shewerewaitingforsomeone.asif,asthough---仿佛,由asi1.______youdecidetotakeup,youshouldtrytomakeitasuccess.A.IfB.WheneverC.UnlessD.Whatever1.______youdecidetotakeup2.Itisfoolishtotakeataxi

youcaneasilywalktothestation.A.beforeB.thatC.unlessD.when2.Itisfoolishtotakeataxi3.I’llacceptanyjob,_____Idon’thavetogetupearly.A.eventhoughB.thoughC.incaseD.aslongas3.I’llacceptanyjob,_____I4.___________problemsyouhave,youcanalwayscometomeforhelp.A.WhatB.WhateverC.WhicheverD.Which4.___________problemsyouhav6.----DidyouremembertogiveMarythemoneyyouowedher?----Yes.Igaveittoher______Isawher.A.whileB.themomentC.suddenlyD.once6.----Didyouremembertogive7.Ifweworkwithastrongwill,wecanovercomeanydifficulty,_______greatitis.A.whatB.howC.howeverD.whatever7.Ifweworkwithastrongwi8.Ihurried_____Iwouldn’tbelateforclass.A.sinceB.sothatC.asifD.unless8.Ihurried_____Iwouldn’tb9.Johnplaysfootball_____,ifnotbetterthan,David.A.aswellB.aswellasC.sowellD.sowellas9.Johnplaysfootball_____,10.--Whatwasthepartylike?--Wonderful.It’syears____Ienjoyedmyselfsomuch.A.afterB.whenC.beforeD.since10.--Whatwasthepartylike?11.Don’tchangeyourmind,______happenstoyou.A.whichB.whatC.whicheverD.whatever11.Don’tchangeyourmind,12.___________hecomes,wewon’tbeabletogo.A.WithoutB.UnlessC.ExceptD.Even12.___________hecomes,wew13.Nobodybelievedhim____________whathesaid.A.eventhoughB.evenifC.nomatterD.because13.Nobodybelievedhim______14.IwaswatchingTV_______suddenlythelightswentout.A.whenB.whileC.asD.for14.IwaswatchingTV_______15.Takeyourumbrellawithyou____________itrains.A.ifB.asifC.incaseD.aslongas15.Takeyourumbrellawithyo16.Nosooner_______enteredtheoffice_______Iheardthetelephoneringing.A.hadI,whenB.Ihad,thanC.hadI,thanD.Ihad,when16.Nosooner_______enteredt17.Ihadhardlyarrived_____hestartedcryingtogohome.A.asB.forC.whenD.until17.Ihadhardlyarrived_____18.Itwon’tbelong________youregretwhatyousaid.A.sinceB.whenC.beforeD.till18.Itwon’tbelong________y19.Thenewsecretaryissupposedtoreporttothemanagerassoonasshe______.A.willarriveB.arrivesC.isgoingtoarriveD.isarriving19.Thenewsecretaryissuppo20.______thedaywenton,theweathergotworse.A.WithB.SinceC.WhileD.As20.______thedaywenton,th状语从句状语从句在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语或是整个句子。状语从句状语从句状语从句状语从句时间状语从句地点状语从句原因状语从句目的状语从句结果状语从句条件状语从句方式状语从句让步状语从句比较状语从句状语从句状语从句时间状语从句时间状语从句引导时间状语从句的连词有：when,while,as,themoment,before,after,till,until,since,assoonas等。Iwilltellhimwhenhecomesback.时间状语从句引导时间状语从句的连词有：when,whil连接词when的用法小结when引导的时间状语从句的谓语动词可以是可延续也可以是表短暂性动作的动词(非延续性)。如Whenthefilmended,thepeoplewentback.WhenIlivedthere,Iusedtogototheseashore.2.可用作并列连词，其意义为“那时，这时”，相当于

andatthis/thattime。常用于下列句式：(刚要……这时突然……)记忆

Sb.wasdoingsomethingwasabouttodosth+when…wasonthepointofdoingsth.hadjustdonesthIwaswalkingalongthestreet,whenImethimIwasabouttofallasleepwhenmysistercamein.3.还可以表示原因“既然”，相当于since;consideringthat。如：

Whydoyouwalkwhenyouhaveacar?

既然你有车为什么要步行呢？.连接词when的用法小结连接词when的用法1when引导的时间状语从句的谓语动词可以是延续性动词也可以是表短暂性动作的动词(非延续性)。Whenthefilmended,thepeoplewentback.WhenIlivedthere,Iusedtogototheseashore.连接词when的用法1when引导的时间状语从句的谓语动词2

when表示“就在这时”

在下列结构中，表示某件事正在发生或刚刚发生，另一动作同时发生。beabouttodo…when…bedoing…when…haddone…when…Wewereabouttostartwhenitbegantorain.Iwasplayingcomputergameswhenmomcamein.2when表示“就在这时”在下列结构中，表示某件We连接词while的用法1.while引导的动作必须是持续性的，在……期间，往往指一段时间。如：Whileweweretalking,hecamein.Pleasedon’ttalksoloudwhileothersareworking.连接词while的用法1.while引导的动作必须是持续性2.while作为并列连词，意为“而，却”，侧重主句动作和从句动作相对比。Wearecleaningtheclassroomwhiletheyareplayingthefootball.

3.while可表示尽管，相当于although。2.while作为并列连词，意为“而，却”，侧重主句动作和※while含义：WhileIwaswalkingdownthestreet,Icameacrossanoldfriend.(while=_______)Helikespopmusic,whileIamfondoffolkmusic.(while=_______)WhileIreallydon’tlikeart,Ifindhisworkimpressive.(while=___________)Whilethereislifethereishope.(while=_______________)whenalthoughaslongasbut※while含义：whenalthoughaslong连词when，while，as的用法1．while引导的时间状语从句的谓语动词必须是可延续的，而when引导的时间状语从句的谓语动词是可延续的，也可以是表短暂性动作的动词。When/Whilehewaseatinghisbreakfast,heheardthedoorbellring.WhenIstoppedmycar,amancameuptome.

(不可延续，短暂性动词，只可以用when，不可用while)连词when，while，as的用法1．while引导的时间2．表示“随着……”，连词用as，不用when或while。Asthedaywenton,theweathergotworse.3如果主句表示的是短暂动作，而从句用延续性动作的进行时态表示在一段时间内正在进行的动作时，when,while与as可互换使用。When/While/AsIwaswalkingdownthestreet,Icameacrossanoldfriendofmine.2．表示“随着……”，连词用as，不用when或while。4.从句动作发生在主句动作之前时，只能用when引导这个从句，不可用as或while。Whenyouhavefinishedyourwork,youmayhavearest.

Whenthechildrenhadgonetobed,shebegantoprepareherlessons.4.从句动作发生在主句动作之前时，只能用when引导这个从句连接词beforeWehadsailedfourdaysandfournightsbeforewesawland.Wehadn’trunamilebeforehefelttired.Pleasewriteitdownbeforeyouforgetit.BeforeIcouldgetinaword,hehadmeasuredme.“……才”

“不到……就”“趁……”“还没来得及”连接词beforeWehadsailedfourdaBefore从句中谓语不用否定式

Beforetheyreachedthestation,thetrainhadgone.Before从句中谓语不用否定式Beforetheyre句型Itwillbe/was＋一段时间＋before…“还要过多久才……”句型Itwillbe/wasnot＋一段时间＋before…“多久就……”Itwillbetwoyearsbeforeheleavesthecountry.Itwasn’ttwoyearsbeforeheleftthecountry.

句型Itwillbe/was＋一段时间＋before…“连接词since在itis/hasbeen+段时间+since从句中，时间的计算从since从句的动作完成或状态结束时算起。ItisthreeyearssinceIsmokedacigar.ItisthreeyearssinceIbegantosmoke.我不吸烟有三年了。我吸烟有三年了。连接词since在itis/hasbeen+段时间+since在itis/hasbeen+段时间+since从句中，时间的计算从since从句的动作完成或状态结束时算起。如：Itisthreeyearssinceshewasinourclass.Itisthreeyearssincehelivedhere她离开我们班有三年了。他不住这儿有三年了。比较itisthreeyearssinceIsmokedacigar.ItisthreeyearssinceIbegantosmoke.

我不吸烟有三年了。我吸烟有三年了since在itis/hasbeen+段时间+sinNosoonerthan---一……就……Hehadnosoonerarrivedthanhewentawayagain.Nosoonerhadhearrivedthanhewentawayagain..nosooner…than…用于句首要求倒装Hardly…when…Scarcely…when…Nosoonerthan---一……就……Nosotill，until和not…until的用法1.until/till引导时间状语从句用于肯定句时，主句的动词是延续性动词，表示动作或状态一直持续到until/till所表示的时间，意为“某动作一直延续到某时间点才停止”。Wewaiteduntilhecame.2用于否定句时，主句谓语动词是非延续性动词，从句为肯定，意为“某动作直到某时间才开始”Hewon’tgotobedtill/untilshereturns.till，until和not…until的用法1.unt3．till不可以置于句首，而until可以。如：

4．not…until句型中的强调和倒装说法：

UntilyoutoldmeIhadnoideaofit.ItwasnotuntilyoutoldmethatIhadanyideaofit.

NotuntilyoutoldmedidIhaveanyideaofit.3．till不可以置于句首，而until可以。如：UntilItwasn’tuntilnearlyamonthlater

___Ireceivedthemanager’sreply.A.sinceB.whenC.asD.that2.Itwasnearlyamonth_________Ireceivedthemanager’sreply.

3.Itwasnearly9o’clock_________Ireceivedthemanager’sreply.

4.Itwasnearlyat9o’clock

_________Ireceivedthemanager’sreply.

beforewhenthatItwasn’tuntilnearlyam考点:易混淆句型itis+时间+sincebeforewhenthatItisfiveyears______hefinishedhisresearch.Itwasfiveyears______hefinishedhisresearch.Itwasfiveyearslater_______hefinishedhisresearch.

Itwas5o’clock_____hegothome.Itwasat5o’clock_____hegothome.whenthatsincebeforethat考点:易混淆句型whenthatsincebeforethOnceyouseehim,youwillneverforgethim.Once---一但……就……Onceyouseehim,youwillnev引导状语从句的连接词有:If,unless,aslongas,incase,providedthat,onconditionthat条件状语从句引导状语从句的连接词有:If,unless,aslonIf---如果Ifyoudon’thurryup,youwillmisstheplane.Ifitsnowstomorrow,theflightwillbecanceled.Ifyouleaveat6o’clocktomorrowmorning,you’dbettergettobednow.If---如果Ifyoudon’thurryup,Unless---如果不,除非=ifnotWecan’tgetthereontimeunlesswebooktheearliestflight=Wecannotgetthereontimeifwedon’tbooktheearliestflight.Unless---如果不,除非=ifnotWecaDon’ttroubletroubleunlesstroubletroublesyou.Hewillnotjoinusunlesshechangeshismind.Don’ttroubletroubleunlesstAslongas---只要Wewillsucceedaslongaswekeepontrying.Youcan’tplaygamesaslongasyouremembertherules.Amanisnotoldaslongasheisseekingsomething.Aslongas---只要WewillsucceAs(so)faras---据……所知AsfarasIknow,hespeaksEnglishverywell.As/SofarasIknow,heisanexpertonDNA.As(so)faras---据……所知AsfarIncase