when-before-since-句型辨析(原創(chuàng))

when,before,since句型歸納1、when句型：

(1)bedoingsth…when…

Hewasstillsmilingwhenthedooropenedandhiswifecamein.

他正笑著的時(shí)候門突然開了，他妻子走了進(jìn)來(lái)。

(2)beabouttodosth…when…

Wewereabouttostartwhenitbegantorain.

我們剛要出發(fā)，天就開始下雨了。

(3)beonthepointofdoing…when正要…這時(shí)…Wewereontheponitofgivingupwhenatruckcameintooursight.我們正要放棄，這時(shí)看到了一輛卡車。

(4)hadnot/hardly/sceracely…when…

(一…就…)Hehadnot/hardly/scarcelyfallenasleepwhenthetelephonerang.

他剛要入睡就響了。(5)hadjustdone…when…(剛做完…某事發(fā)生)

Ihadjustgonetobedafteraveryharddaywhenthephonerang.

在勞累了一天之后我剛剛就寢，鈴就響了。(6)還可以表示原因“既然”，相當(dāng)于since;consideringthat.

Itwasfoolishofyoutotakeataxiwhenyoucouldeasilywalkthereinfiveminutes.

beforesbcan/could…某人還沒(méi)來(lái)得及……

BeforeIcouldgetinaword，hehadmeasuredme．

我還沒(méi)來(lái)得及插話，他就給我量好了尺寸Itwillbe/was+時(shí)間+before過(guò)一段時(shí)間才……

Itwillbe4yearsbeforehegraduates.他還有四年時(shí)間畢業(yè)了。Itwon’tbe/wasn’tlong……before….beforelong(adv.)Itwas5minutesbeforeheleft.Itis/hasbeen5minutessinceheleft.

2.before句型(3)haddone…before

〔才……〕

Wehadsailedfourdaysandfournightsbeforewesawland.

我們航行了四天四夜才見到陸地。

(4)

hadnotdone---before---

不到……就……

Wehadn’trunamilebeforehefelttired.

我們還沒(méi)走到一英里路他就覺(jué)得累了。

Itis/hasbeen＋段時(shí)間＋sincesb.did…Itisthreeyearssinceshewasinourclass.

她離開我們班有三年了。

Itisthreeyearssincehelivedhere.

Itis3yearssinceImovedhere自從他不住這兒已經(jīng)三年了。自從我搬到這兒已經(jīng)三年了。

3.since句型1.(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.whileExercises:A.whenD.whenB.whenB.whenC.when6.(06天津)ThecostoflivinginGlasgowisamongthelowestinBritain,______thequalityoflifeisprobablyoneofthehighest.A.since B.whenC.as D.while7.(04年江蘇)______Iacceptthatheisnotperfect,Idoactuallyliketheperson.A.While B.SinceC.BeforeD.UnlessD.A.8.______enteredtheofficewhenherealizedthathehadforgottenhisreport.A.Hehardlyhad B.Hadhehardly C.Hardlyhadhe D.HardlyhehadC9.(03年北京)Hemadeamistake,butthenhecorrectedthesituation______itgotworse.A.until B.when C.before D.as10.(04福建)Scientistssayitmaybefiveorsixyears______itispossibletotestthismedicineonhumanpatients.A.since B.after C.before D.when11.(06四川)－Whydidn’tyoutellhimaboutthemeeting?－Herushedoutoftheroom______Icouldsayaword.