Unit4語法時間狀語從句講義練習牛津譯林版九年級英語上冊

譯林九年級上U4語法時間狀語從句講義+練習定義：在句中作時間狀語成分的從句，可放在句首、句中或句尾?！颈嫖?】before&after（1）before：“在...之前”，表示主句動作發(fā)生在從句動作之前例：Closethewindowsbeforeyouleavetheroom,please.（在你離開房間前，請關上窗。）★注意：beforelong：“不久”例：Beforelonghetookovertheeditingofthemagazine.（不久，他接手了雜志的編輯工作。）longbefore：“很久以前”例：Shesaidshehadseenthefilmlongbefore.（她說她很早就看過這部電影。）（2）after：意思是“在...之后”，表示主句動作發(fā)生在從句動作之后。例：IwenttoschoolafterIfinishedmybreakfast.（我吃完早飯后去上學。）【辨析2】when&whilewhen：①“當...時”，表示主句動作和從句動作同時/先后發(fā)生。從句可用延續(xù)性/瞬時性動詞例：WhenIlivedthere,Imadequiteafewfriends.（我住在那里時，交了不少朋友。）→動作同時發(fā)生，lived為延續(xù)性動詞WhenIgotthere,thetrainhadleft.（當我趕到那里時，火車已經開走了。）→主句動作先發(fā)生，從句動作后發(fā)生，got為瞬時性動詞②“既然，考慮到”例：It’snowonderyou’vegotaheadachewhenyoudranksomuchlastnight.（考慮到你昨晚喝了那么多酒，難怪會頭疼。）③常用搭配bedoing...when...：正在...這時...例：Jackwasworkinginthelabwhenthepowercutoccurred.（杰克正在實驗室工作，這時斷電了。）beabouttodo...when...：正要...這時...例：Wewereabouttostartwhenitbegantorain.（我們正準備出發(fā)，這時天空下起了雨。）★注意1：如果when引導的時間狀語從句的主語與主句主語相同，而從句的謂語又是be動詞時，那么從句中的主語和be可以省略。如：Whenyouareintrouble,askherforhelp.（當你遇到困難時，向她尋求幫助。）→Whenintrouble,askherforhelp.注意2：當when引導的時間狀語從句的主語與主句主語相同時，往往還可以用“when＋分詞”的形式替代該狀語從句。如：WhenIcameintotheroom,Ifoundhimlyingthereasleep.→Wheningintotheroom,Ifoundhimlyingthereasleep.注意3：在時間狀語從句中，不能用任何一種將來時，如：一般將來時、過去將來時態(tài)或將來完成時，而要用相應的一般現(xiàn)在時態(tài)、一般過去時或現(xiàn)在完成時來代替。如:I'lltelephoneyouassoonasIgetthere.Shesaidshewouldphonemeassoonasshegotthere.Don'tgetoffthebusuntilithasstopped.（2）while：從句謂語動詞必須是延續(xù)性動詞例：Itwasraininghardwhilewegotthere.?→get為非延續(xù)性動詞，此時只能用when★注意：主句謂語動詞為延續(xù)性時：譯為“與...同時”例：Whilemywifewascooking,IwaswatchingTV.（妻子做飯的時候，我在看電視。）主句謂語動詞為瞬時性時：譯為“在...期間”例：AstrangercameinwhileIwasdoingmyhomework.（我正在做作業(yè)時，一個陌生人走了進來。）while有時還可以表示對比。例：Ilikeplayingfootballwhileyoulikeplayingbasketball.（我喜歡踢足球，而你喜歡打籃球。）→對比【辨析3】since&till&until①since：“自從...”，通常主句用現(xiàn)在完成時，從句用一般過去時例：SinceIlastwrotetoyou,alothashappenedtomeinthe12months.（自從我上次給你們寫信以來，這12個月里我發(fā)生了很多事情。）常用句型：Itis/hasbeen+時間段+since...：自從...有多長時間了例：Itistwohourssincehelefttheclassroom.（他離開教室已經兩個小時了。）IthasbeenyearssinceIenjoyedmyselfsomuch.（我已經很多年沒有這么開心過了。）②till&until：“到...為止”，一般可互換，但till只能用于肯定句，且不能位于句首，而until可以位于句首。例：Iworkeduntil/tillhecameback.（我一直工作到他回來。）Untilyouarrived,Iwasfeelingquitelonely.（在你來之前，我感到非常孤獨。）★注意：如果主句中的動詞是瞬時動詞，必須用否定形式，即not...until結構，表示“直到...才開始”；如果主句中動詞是延續(xù)性動詞時，用肯定或否定形式都可以。例：IdidnotgotobeduntilIfinishedmyhomework.（直到做完作業(yè)，我才上床睡覺。）Walktill/untilyouseeawhitehouse.（一直走到你看到一座白房子為止。）【辨析4】assoonas&whenever①assoonas：“一...就...”，表示從句動作一發(fā)生，主句動作馬上就發(fā)生例：Theboyrantothecinemaassoonashisfatherwentout.（父親一出門，小男孩就跑向電影院。）②whenever：“每當，任何時候”，等于everytime。例：Helikeslisteningtomusicwheneverhehastime.（每當他有時間的時候，他喜歡聽音樂。）鞏固提高練習1.—Mum,whencanwegotowatchthevolleyballmatchinthesportscenter?—Notuntilthehomework______tomorrow.A.willbefinished

B.isfinished

C.wasfinished

D.hasfinished2.—Canyoutellmewhenyouaregoingtoarrivethere?—I'mnotsure.ButI'llringyouupassoonasI_____theretomorrow.A.arrive

B.arrived

C.willarrive

D.amgoingtoarrive3.Timewaitsfornoman.Butsomepeoplewon'trealizetheimportanceoftime______it'sgone.A.until

B.as

C.when

D.since4.—Whenwillthemeetingend?

—______.A.Notuntiltheagreementisreached.

B.UntiltheagreementisreachedC.Nottilltheagreementisreached.

D.Tilltheagreementisreached.5．—MayIborrowanothertwobooks,Madam?—Sorry.Nomorebookscanbeborroweduntilthesetwo______.A.return

B.arereturned

C.willreturn

D.willbereturned6.—Hey,Tony,______willthepetitionstart?Ican'twaittowatch.—______thefamousscientistarriveshere.When;NotuntilB.When;UntilC.Howlong;UntilD.Howlong;Notuntil7.—BecauseoftheDoubleReductionPolicy(雙減政策),studentsgohome______theyfinishtheirhomeworkatschool.—Sure.AsaparentofaGrade9student,Idon'tfeelsotiredasbefore.A.before

B.while

C.since

D.after8.______youusetheputer,youcansearchforlotsofinformationquickly.A.Assoonas

B.Before

C.Since

D.After9.—Katewasonceoverweight.Icouldn'tbelieveshebecamesoslim______lsawherjustnow.A.until

B.since

C.if

D.when10.—Whatadullrainydayagain!Whenwilltherainstop?—______nextSaturday.Theweatherforecastsaysitwilllastawholeweek.A.Until

B.Before

C.After

D.Notuntil11.Peopledon'tknowthevalueoftheirhealth______

theyloseit.A.when

B.as

C.after

D.until12.—Wewonderifshe______

therightwaythenearestpostoffice.—

Iwillcheckitassoonasshe______.willfind,willreturn

B.willfind,returns

C.finds,willreturn

D.finds，returns13．—______didyougotobedlastnight?—______

Mothermycameback.Howlong;Notuntil

B.Howlong;Until

C.When;Notuntil

D.When;Until14.Susan,doyourhomeworkquickly.We'llgoforapicnicassoonasyourhomework______.A.finishes

B.willfinish

C.isfinished

D.willbefinished15.—Mum,canIplaythegameWarcraftnow?—Notuntilyourhomework______·A.willfinish

B.willbefinished

C.isfinished

D.finishes16.Loveyourparents______theyarealive.Don'twaituntilitistoolate.A.because

B.before

C.while

D.unless17.Mr.Blackwalkedaroundandofferedhelp______weweredoinganexperiment.A.while

B.before

C.after

D.until18.Timewaitsfornoman.Butsomepeoplewon'trealizetheimportanceoftime______it'sgone.A.as

B.after

C.when

D.until19.—Mayweleavetheclassroomnow?—No,you______.You______toleaveuntilthebellrings.mustn't;areallowed

B.can't;aren'tsupposedC.needn't;aren'tallowed

D.don'thaveto;aresupposed20.Peterwasgoingtoschool______itbegantorain,sohehadtoweararaincoat.A.since

B.when

C.while

D.because21.Mycousinwilltellmeabouthistripafterhe______hometomorrow.A.arriving

B.willarrive

C.arrives

D.isarriving22．—Couldyouhelpmelookaftermybaby______Iamaway?—______.as;WithpleasureB.while;MypleasureC.as;That'sallrightD.while;Withpleasure23.Herealizedhismistakesandtookactiontoreducetheloss______itwastoolate.A.before

B.unless

C.if

D.until24.Thegameshowwassofunnythathewatcheditforhours______sherealizedit.A.as

B.since

C.before

D.after25.—Excuseme.Whencanwehavethesteakweordered?—Notuntilit_____intenminutes.A.willbeprepared

B.isprepared

C.hasprepared

D.wasprepared26.—Excuseme,couldyoucallmewhenmyfriend______here?—Ofcourse.ButIamstillnotsurewhenyourfriend______here.A.es;wille

B.es;esC.wille;es

D.wille;wille27.—Whenwilltherainstop?—______nextFriday.Theradiosaysitwilllastforaweek.A.Until

B.Before

C.After

D．Notuntil28.Peopledidn'tknowAnneFrank'sdiary______itwascollectedandpublishedbyherfather.A.after

B.until

C.when

D.assoonas29.—Yourpictureissowonderful.—

Ihadworkedfor10hours______Ifinisheddrawingit.A.until

B.after

C.since

D.before30.Ididn'tbelieveit______lsawthe______endingonthewebsite.A.until;surprisingB.if;surprise

C.that;surprised

D.what;surprise31.—Excuseme,Mum.Whencanwehavedinner?—Notuntilit______inhalfanhour.A.isprepared

B.hasbeenpreparedC.willbeprepared

D.wasprepared32.MyEnglishwaspoorbecauseIhadn'tlearnedit______lcamehere.A.assoonas

B.after

C.before

D.whenever33.—______didyouleavetheclassroom?—______Isawmydaughtersitdownandreadherbook.A.Howlong;After

B.When;AfterC.Howlong;Until

D.WhenUntil34.—Oh,somanypeoplearestandingoutsidethehall.______willthefilmstart?—______seveno'clock.A.Howsoon;Notuntil

B.Howlong;NotuntilC.Howsoon;Until

D.Howlong;Until35.______hegotreadytoleavehome,hisparentscametohishome.A.While

B.As

C.Until

D.If36.—MyfatherworksinChengdu.Ittakeshimmuchtimetogohomeeverymonth.—Don'tworry.It'llbeeasierandquickerafterTaizhouHighSpeedRailStation______.A.builds

B.isbuilt

C.willbuild

D.willbebuilt37.—______willwetakeoffourmasksinclass?—______wecanfindoutmedicinetocurethediseasepletely.A.Howlong;Notuntil

B.Howsoon;NotuntilC.Howlong;Until

D.Howsoon;Until38.Maxgotlostandwastrappedintheforestfor10hours______afarmernearbyfoundhim.A.if

B.since

C.until

D.after39.MyparentsgaveredpacketstomycousineverySpringFestival______shegotajob,becauseshesaidshewasabl