外研版英語必修二 Module 5 時間原因狀語從句講解

時間狀語從句

由連詞when,while,as,assoonas,before,after,till/until等引導(dǎo)。主句用將來時，從句常用一般現(xiàn)在時表將來。（主將從現(xiàn)）

Iwilltellhimwhenhecomesback.1.連接詞when,while,as的用法區(qū)別when,while,as這三個連詞都可表示“當(dāng)……的時候”，使用時應(yīng)注意：1)when可表示一個時間點(diǎn)，也可表示一個時間段。Whenhecamein,wewerehavingsupper.Whenwewerehavingsupper,thelightsuddenlywentout.2)while則只表示一個時間段。它所引導(dǎo)的時間狀語從句中的時態(tài)常用進(jìn)行時態(tài)。When/Whilehewaseatinghisbreakfast,heheardthedoorbellring.3)as著重指從句的動作與主句的動作相伴隨發(fā)生?！半S著……”，“一邊……一邊……”。Shesangasshewalkedalongthestreet.Astheelectionapproached,theviolence（暴行）gotworse.

連接詞when的用法小結(jié)when引導(dǎo)時間狀語從句，意為“當(dāng)……的時候”2.when用作并列連詞，常用于下列結(jié)構(gòu)中，表示某件事正在發(fā)生,正要發(fā)生或剛剛發(fā)生，另一動作同時或緊接著發(fā)生。意為“就在那時/這時”,相當(dāng)于andthen,andatthis/thattime。

was/weredoing…when…was/wereabouttodo…when…was/wereonthepointofdoing…when…h(huán)addone…when…Iwasonthepointofreadingbookswhensomeoneknockedatthedoor.

Wewereabouttostartwhenitbegantorain.Iwasplayingcomputergameswhenmomcamein.Ihadjustgothomewhenitbegantorainheavily/hard.3.Itis/was+時間點(diǎn)+when…當(dāng)…時已是…時候了Itwasalready12o’clock______Igothome.Itwasalreadyat12o’clock______Igothome.4.when表示“既然;考慮到”

HowcanIhelpthemtounderstandwhentheywon’tlistentome?5.when表示“雖然;然而;可是”Sheclaimedtobe18,whenIknewshewasonly16.whenthat1.(04北京春)Wewereswimminginthelake______suddenlythestormstarted.A.when B.while C.until D.before2.(02上海)Hewasabouttotellmethesecret______someonepattedhimontheshoulder.A.as B.until C.while D.when3.(05上海)Hetransplantedthelittletreetothegarden______itwasthebesttimeforit.A.where B.whenC.that D.until4.(05福建)－DidJackcomebackearlylastnight?

－Yes.Itwasnotyeteighto’clock____hearrivedhome.A.BeforeB.whenC.that D.until5.(06遼寧)Hewasabouthalfwaythroughhismeal______afamiliarvoicecametohisears.A.why B.where C.whenD.whileADBBC連接詞while的用法小結(jié)

1.while引導(dǎo)時間狀語從句，意為“當(dāng)……的時候”，引導(dǎo)的動作必須是持續(xù)性的。Pleasedon’ttalksoloudwhileothersareworking.Strikewhiletheironishot.

趁熱打鐵2.while作為并列連詞，表對比，意為“然而，而，卻”。

JanewasdressedinbrownwhileMarywasdressed

inblue.3.while引導(dǎo)讓步狀語從句，意為“盡管，雖然”，相當(dāng)于although。WhileIadmitthattheproblemsaredifficult,Idon’tagreethattheycan’tbesolved.6.(06天津)ThecostoflivinginGlasgowisamongthelowestinBritain,______thequalityoflifeisprobablyoneofthehighest.A.since B.whenC.as D.while7.(04年江蘇)______Iacceptthatheisnotperfect,Idoactuallyliketheperson.A.While B.SinceC.BeforeD.Unless8.________itistruethatastudent’smostimportantgoalistodowellinhisorherstudies,itdoesn’tneedtobetheonlygoal.AwhenBAsCWhileDBefore9.Marymadecoffee

herguestswerefinishingtheirmeal.(全國)A.sothatB.althoughC.whileD.asifDACC連接詞as的用法小結(jié)1.引導(dǎo)時間狀語從句，“當(dāng)…時候,一邊…一邊…,隨著…”。Shesangasshewalkedhomealltheway.Asshegrewolder,shebecamemorebeautiful.2.引導(dǎo)方式狀語從句，“按照……(的方式)”。WheninRome,doasRomansdo.3.引導(dǎo)非限制定語從句，“正如,正像,如同”。Asweallknow,successcomesfromhardwork.4.引導(dǎo)原因狀語從句，“由于,因?yàn)?既然”。Assheisfreetoday,shewouldliketodosomeshopping.5.讓步狀語從句“雖然”，“盡管”1）as引導(dǎo)的讓步狀語從句要倒裝，句型為：形容詞/副詞/名詞（不帶冠詞）/動詞（原形）+as+主語+其它Youngasheis,heknowsalot.MuchasIlikeit,Ican’taffordit.Farmerasheis,heiswell-educated.TryasImight,Icouldn’tliftthestone.

2）although不倒裝，though可倒裝也可以不倒裝,as必須倒裝。Although/Thoughheisachild,heknowsalot.Childas/thoughheis,heknowsalot.2.till,until用法小結(jié)1).until/till從句用于肯定句時，主句的動詞是延續(xù)性動作，意為“某動作一直延續(xù)到某時間點(diǎn)才停止”。

Wewaiteduntil/tillhecame.2).not…until“直到…才”，主句謂語動詞是非延續(xù)性動詞。強(qiáng)調(diào)主句的動作在某個具體時間或某件事發(fā)生之后才發(fā)生。

Hewon’tgotobeduntilhisfatherreturns.3).not…until句型中的強(qiáng)調(diào)和倒裝（部分倒裝）的用法：①Thesportsmeetingwillnotbehelduntilnextweek.Notuntilnextweek

willthesportsmeetingbeheld.Itis

notuntilnextweek

thatthesportsmeetingwillbeheld.②Hedidnotbegintoknowhowimportantthefamilywasforhimuntilhelefthishome.Notuntilhelefthishome

didhebegintoknowhowimportantthefamilywasforhim.Itwas

notuntilhelefthishome

thathebegantoknowhowimportantthefamilywasforhim.

1.(03北京春)－Washisfatherverystrictwithhimwhenhewasatschool?

－Yes.Hehadneverpraisedhim______hebecameoneofthetopstudentsinhisgrade.A.after B.unlessC.until D.when2.(03上海)Agoodstorytellermustbeabletoholdlisteners’curiosity______hereachestheendofthestory.A.whenB.unlessC.afterD.until3.Itwasnot______shetookoffherdarkglasses______Irealizedshewasafamousfilmstar.A.when;that B.until;that C.until;when D.when;thenCDB3.since的用法小結(jié)1)since表示“自…以來”；“從…以后”Ihaven’tseenhersincesheleft.2)常用句式★Itis/hasbeen+一段時間+since…(did）Itwas+一段時間+since…（haddone）

自從（不）…以來已有多長時間（若動詞是非延續(xù)，直譯；反之，反譯）

Ithasbeenseveralmonthssincewegraduatedfromthemiddleschool.非延續(xù)性動詞自從我們從這所中學(xué)畢業(yè)已經(jīng)有幾個月了。

Itis/hasbeentenyearssincehesmoked.延續(xù)性動詞他戒煙已經(jīng)十年了。3)since表示“既然”,“由于”Sinceyouarenotinterested,Iwon’ttellyouaboutit.4.before的用法小結(jié)1)before表示“在…以前”“還沒來得及…就…”,“趁著還未…”，“…才”，“…就”Pleasewriteitdownbeforeyouforgetit.Wehadsailedfourdaysandfournightsbeforewesawland.HeleftbeforeIsaid“thankyou”tohim.2)before常用句式Itis/willbe+一段時間+before…（一般現(xiàn)在時）Itwas/wouldbe+一段時間+before…（一般過去時）要過多久才…Itwillnotbelongbefore…“要不了多久就……”Itwasnotlongbefore…“沒過多久就……了”ItwillbehalfayearbeforeIcomeback.Itwon’tbelongbeforewemeetagain.Itwasthreeweeksbefore

hecameback.Itwasn’tlongbeforeheleftthecountry.1.(03年北京)Hemadeamistake,butthenhecorrectedthesituation______itgotworse.A.until B.when C.before D.as2.(04福建)Scientistssayitmaybefiveorsixyears______itispossibletotestthismedicineonhumanpatients.A.since B.after C.beforeD.when3.(06四川)－Whydidn’tyoutellhimaboutthemeeting?

－Herushedoutoftheroom____Icouldsayaword.A.beforeB.until C.when D.after4.(05北京春)Itisalmostfiveyears______wesaweachotherlasttime.A.beforeB.since C.after D.because

CCAB5.引導(dǎo)時間狀語從句的名詞短語themoment,theminute,theinstant,thefirst/secondtime,everytime,eachtime,nexttime,anytime,theday,theyearThefirsttimeIdrovethecar,Ifeltverynervous.Nexttimeyoucome,pleasebringyourcomposition.EverytimeIcaughtacold,Ihadpaininmyhead.Thedayhissonwasborn,hewenttothefront.6.bythetime的用法Bythetimeyoureadtheletter,I’llhavebeeninChina.BythetimeIarrivedattherailwaystation,thetrainhadleft.BythetimeJackreturnedhomefromEngland,hisson______________________college.(畢業(yè)）Bythetimeyougraduatefromtheschool,you________________Englishforsixyears.（學(xué)習(xí)）hadgraduatedfromwillhavelearned7.表示“一…就”的句型1）assoonas,themoment,theminute,theinstant,immediately,directly,instantly,hardly…when,scarcely…when,nosooner…thanAssoonashecomes,I’lltellhim.Themoment/minute/instantIsawhim,Irecognizedhim.Ileftdirectly/instantly/immediatelytheclockstruck5.Ihadnosoonerreachedhomethanitbegantorain.Hehadhardly/scarcelygotoutofhiscarwhenitcaughtfire.注意：如果hardly/scarcely/nosooner置于句首，主句用部分倒裝。(p3復(fù)習(xí)部分倒裝)Hardly/scarcelyhadIgothomewhenitbegantorain.Nosooner

hadIbeguntotalkthanherangoff.Nosooner

hadItoldhimmynamethanhestoppedlistening.HardlyhadIenteredtheroomwhenthetelephonerang.注意主從句的時態(tài)2)on/upondoingon/uponone’s+nOnarrivingatthestation,thethiefwasarrested.OnhisarrivalinParis,hewasrecognizedasafamousperson.1.(01北京春)－DidyouremembertogiveMarythemoneyyouowedher?

－Yes.Igaveittoher______Isawher.A.while B.themoment C.suddenly D.although2.(1998上海)Ithoughtherniceandhonest______Imether.A.firsttime B.forthefirsttime

C.thefirsttime D.bythefirsttime3.______enteredtheofficewhenherealizedthathehadforgottenhisreport.A.Hehardlyhad B.Hadhehardly C.Hardlyhadhe D.Hardlyhehad

BC