1、狀從句常的隸屬有：when,while,as,before,after,since,until(till)onceassoonas,themoment,theminute,immediately,directly,each/everytime,thefirsttime,thelasttime,nexttime,bythetime,whenever等。比方：Every/EachtimeIwasintrouble,hewouldcometomyhelp.IthoughtherniceandhonestthefirsttimeImether.注意：（1）when,while,as的區：1)when引

2、從句，主從句的作有先有后，也可以同行,從句的作可以是持性的，也可以是短的。如：WhenIgottotheairport,theplanehadalreadytakenoff.（主先從后）（短性）WhenIlivedthere,IusedtogototheseasideonSundays.(同)（持性）Whenthemovieended,thepeoplewentback.（從先主后）2)while重主從句作的比，且從句的必是持性的。如：Whilewewerechattingshewaslookingatthetimetableonthewall3)as引從句重主從句作同或幾乎同行，從句的作可以

3、是持性的，也可以是短的。如：SometimesIwatchTVasIamhavingbreakfast4）when和while可以是并列，意思分是“就在”，“可是”。如：IwashavingarestonthesofawhenthetelephonerangTheyweresurprisedthatachildshouldworkouttheproblemwhiletheycouldnt.注：并列when常用與以下句型中：was/weredoingwhen（正在做突然）was/wereabouttodowhen（要做突然）was/wereonthepointofdoingwhen(要做突然)h

4、adjustdonewhen.(一就)Hardly/Scarcelyhaddonewhen(一就)(2)before引從句,特別靈便，注意以下句子中的before的：1.BeforeIcouldgetinaword,thetailorhadmeasuredme.(沒來得及就)2.Wehadntrunamilebeforehefelttired.(沒就)3.Wehadsailed4daysbeforewesawland.(才)4.Pleasewriteitdownbeforeyouforgetit.(趁沒就)(3)till(until)和nottill(until)1）till(until):主

5、句必是持性的，意思是“到止“如：Heremainedtheretill/untilshearrived.2）nottill(until):主句必是短性的，意思是“直到才”如：Shewontgotobedtill/untilhereturnshome.3）notuntil有式和倒裝式：句：Itisnotuntilhereturnshomethatshewillgotobed.倒裝句：Notuntilhereturnshomewillshegotobed.幾個極易混淆的狀從句：1）Itwas+點+when（當的候是）Itwas5amwhenwearrivedatthevillage.2）Itwas

6、/willbe+段+before(沒就了才)Itwas/willbetwoweeksbeforewemet/meetagain.3）Itis/hasbeen+段+since（自從以來有）Itis/hasbeen3yearssincewelastmet.打破點：一看be的，二看段是點。注意：在“Itis/hasbeen+段+since”句型中，從句的必是短性的，若是是延性的，要從從句的作束算起。如：Itis3yearssinceIsmoked.(我戒煙有三年了)充：assoonas,immediately,directly,instantly,themoment,theminute,theins

7、tant,nosoonerthan,hardly/scarcely.when.和once些隸屬接引的從句都表示從句的作一世，主句的作隨即就生，常“一就”。從句中一般代替將來。everytime,eachtime,nexttime,thefirsttime,anytime,allthetime等名短用來引狀從句，表示“每當.，每次.；下次”等。（一）牢固Itwasquiet_thosebigtrucksstartedcomingthroughthetown.A.beforeB.afterC.untilD.unless2.Hardlyhadhereachedtheschoolgate_thebel

8、lrang.A.whileB.whenC.asD.assoonasHewasabouttogotobed_thedoorbellrang.whileB.asC.beforeD.when_JohnwaswatchingTV,hiswifewascooking.AsB.AssoonasC.WhileD.Till5.Thechildrenranawayfromtheorchard(果園)_theysawtheguard.A.themomentB.afterC.beforeD.asNosoonerhadIarrivedhome_itbegantorain.A.whenB.whileC.asD.than

9、HardlyhadhearrivedinHongkong_sherangmeup.A.whenB.thanC.thatD.and8.Someonecalledmeupinthemiddleofthenight，buttheyhungup_Icouldanswerthephone.A.asB.sinceC.untilD.before9.Therooffell_hehadtimetodashintotheroomtosavehisbaby.A.beforeB.asC.afterD.untilScientistssayitmaybefiveortenyears_itispossibletotestt

10、hismedicineonhumanpatients.A.sinceB.beforeC.afterD.when11.Severalweekshadgoneby_Irealizedthepaintingwasmissing.A.asB.beforeC.sinceD.when12.It_longbeforewe_theresultoftheexperiment.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;know13.Whatwasthepartylike?-Wonderful.Itsyears_Ienjoyedmyselfsomuc

11、h.A.afterB.beforeC.whenD.sinceThenewsecretaryissupposedtoreporttothemanagerassoonasshe_.A.willarriveB.arrivesC.isgoingtoarriveD.isarriving15._gotintotheroom_thetelephonerang.A.Hehardlyhad;thenB.Hardlyhadhe;whenC.Hehadnot;thenD.Nothadhe;whenNosoonerhadhefinishedhistalk_hewassurroundedbytheworkers.Did

12、youremembertogiveMarythemoneyyouowedher?-Yes,Igaveittoher_Isawher.A.whileB.themomentC.suddenlyD.once18.Ithoughtherniceandhonest_Imether.A.firsttimeB.forthefirsttimeC.thefirsttimeD.bythefirsttimeHewillhavelearnedEnglishforeightyearsbythetimehe_fromtheuniversitynextyear.A.willgraduateB.willhavegraduat

13、edC.graduatesD.istograd20.Hegotexcitedatthenews，_Iwascalm.A.whenB.whileC.becauseD.afterIsawMr.SmithlastSunday.Wehadnotseeneachother_IleftLondon.A.asB.beforeC.sinceD.till22.Illbebackbeforeyou_.A.willleaveB.willhaveleftC.leaveD.wouldleave（二）、高考真題1.Iusedtolovethatfilm_Iwasachild,butIdontthatwayanymore.

14、(2008遼寧卷)A.onceB.whensinceD.althoughfeelitC.Nancyenjoyedherselfsomuch_shevisitedherfriendsinSydneylastyear.（2008福建）A.thatB.whichwhenD.where3.Thereweresomechairsleftover_everyonehadsatdown.C.（2008四川卷）A.whenB.untilthatD.whereC.Insomeplaceswomenareexpectedtoearnmoney_menworkathomeandraisetheirchildren.A.butB.whilebecauseD.though5._theInternetisofgreathelp,Idontthinkitsagoodideatospendtoomuchtimeonit.(2008卷)A.IfB.WhileBecauseD.As6.Imsorryyouvebeenwaitingsolong,butitllstillbesometime_Briangetback.（2008北京卷）A.