Unit4GrowingupGrammarIt'sbeenalongdaywithoutyoumyfriend.AndI'lltellyouallaboutit____Iseeyouagain.We'vecomealongwaywhere

webegan.OhI'lltellyouallaboutit____Iseeyouagain._____Iseeyouagain.whenwhenWhen時(shí)間狀語從句Enjoyavideo常見引導(dǎo)詞：before,after,when,while,since,till/until,assoonas,

wheneverTimeclausee.g.Whentheweatherisgood,mygrandpalikesgoingfishing.Thesuncameoutafterthestormstopped.時(shí)間狀語從句是指在復(fù)合句中充當(dāng)時(shí)間狀語的句子。PresentationGrammarAPresentatione.g.Closethewindowsbeforeyouleavetheroom.IwenttoschoolafterIfinishedmybreakfast.before&after強(qiáng)調(diào)動(dòng)作的先后關(guān)系。before:在...之前after:在...之后before和after作連詞,后面加句子;作介詞,后面加名詞或doing。1.Closethewindowsbeforeyouleavetheroom.Closethewindowsbefore________(leave)theroom.從句在前，用逗號(hào)隔開2.IwenttoschoolafterIfinishedmybreakfast.

Iwenttoschoolafter_________(finish)mybreakfast.leavingfinishing=Beforeyouleavetheroom,closethewindows.=AfterIfinishedmybreakfast，Iwenttoschool.PracticePresentationwhen引導(dǎo)某個(gè)時(shí)刻發(fā)生的事情Whenheenteredtheroom,everyonelookedathim.引導(dǎo)某段時(shí)間發(fā)生的事情WhenIwasplayingcomputergames,mymothercamehome.從句的謂語動(dòng)詞可以是延續(xù)性動(dòng)詞，也可以是非延續(xù)性動(dòng)詞。Presentationwhile引出某個(gè)時(shí)間段發(fā)生的事情WhileIwasplayingcomputergames,mymothercamehome.表示兩個(gè)動(dòng)作作同時(shí)發(fā)生Iwasreadingwhilemymotherwascooking.表示兩者的對(duì)比（“而，然而”，并列連詞）AnnlikesteawhileLilypreferscoffee.while引導(dǎo)時(shí)間狀語從句，從句的動(dòng)詞必須是延續(xù)性動(dòng)詞【注意】while后面還可以跟表示狀態(tài)的詞。e.g.WhileIwasinBeijing,Ivisitedalotofplaces.e.g.When(sheis)introuble,shealwaysasksformyhelp.While(hewas)attendingjuniorhigh,Spudtriedoutfortheschoolteam.when&while拓展當(dāng)主句和從句的主語一致，并且從句的謂語中有be動(dòng)詞的某種形式時(shí)，可以省略從句的主語和be動(dòng)詞,構(gòu)成when/while+-ing結(jié)構(gòu)1.Thedaysgetlonger_________springcomes.2._____________theboyswereplayingfootball,itrained.3.Iwasabouttoleave_______thephonerang.4.Jackisstrong______hisbrotherisweak.5.shealwaysasksmeforhelp,___________(sheis)introuble.Filltheblankswith“when”&“while”whenwhenWhen/Whilewhen/whilewhilePracticeIgotojoggingeverymorning.ThenIhavebreakfast.________________________________________2.Ipractisedplayingbasketballforhours.Ifelttiredout.________________________________________3.ImetPeter.Iwaswaitingatthebusstop.________________________________________4.IwaswatchingTV.Ireceivedacallfrommyuncle.__________________________________________________5.Iwasreadytogotobed.Myfathercamebackfromwork.____________________________________________________IgojoggingeverymorningbeforeIhavebreakfast.AfterIpractisedplayingbasketballforhours,Ifelttiredout.While/WhenIwaswaitingatthebusstop,ImetPeter.While/WhenIwaswatchingTV,Ireceivedacallfrommyuncle.Whenmyfathercamebackfromwork,Iwasreadytogotobed.P.54Davidiswritinginhisdiaryaboutoneofhisdays.Helphimcombinehissentencesusingbefore,after,whenorwhile.GrammarB現(xiàn)在完成時(shí)+since+一般過去時(shí)Presentation表示“自從...以來”。從句謂語動(dòng)詞用一般過去時(shí)，而主句用現(xiàn)在完成時(shí)，且主句的動(dòng)詞必須是延續(xù)性動(dòng)詞。sincee.g.You’vebeenhappysinceIfirstmetyou.Theyhavebeenfriendssincetheywereatprimaryschool.PresentationsinceIt’s/Ithasbeen+時(shí)間段+since+時(shí)間狀語從句

翻譯為：自…以來，已經(jīng)…(時(shí)間)了。

從句的謂語動(dòng)詞用一般過去時(shí)，且必須是非延續(xù)性動(dòng)詞。e.g.It’s/hasbeenthreemonthssincehemovedtothiscity.時(shí)間段+haspassed+since+時(shí)間狀語從句翻譯為：自從…以來，…（時(shí)間）已經(jīng)過去了”。

從句的謂語動(dòng)詞用一般過去時(shí)，且必須是非延續(xù)性動(dòng)詞。e.g.Threemonthshaspassedsincehemovedtothiscity.since還可以引導(dǎo)原因狀語從句，翻譯為“由于；既然”，語氣較弱，一般強(qiáng)調(diào)已知事實(shí)。e.g.Sinceyoucan’tanswerthequestion,I’llasksomeoneelse.Presentationtill&untilUntil常與延續(xù)性動(dòng)詞連用，表示主句動(dòng)作一直持續(xù)到until表示的時(shí)間為止。e.g.Iwaiteduntilthreeo’clock,buthedidn’tcome.not…until…“直到…才…”，常與非延續(xù)性動(dòng)詞連用，表示主句動(dòng)作直到until所表示的時(shí)間才發(fā)生。e.g.Theboydidn’tsleepuntilhisfathercameback.都表示“直到…為止”。一般情況下可互換，until更正式。until可以放在句首或句中，而till不可以用在句首。1.Ihavebeencrazyaboutplayingbasketball_____Iwasalittleboy.2.Theweatherhasbeenawfulthisweek.Theraindidnotstop_____yesterdayevening,sowecouldnotpracticebasketballforseveralyears.3.Weplayedbasketballintheplaygroundthisafternoon______itwasgettingdark.4.Itisthefirsttimewehaveplayedbasketball_____Monday.Weenjoyedourselvesverymuch.5.Iwaitedfor20minutesatthebusstop________thebusarrived.6.ItisFridayevening.Iwillnotgotobed______IfinishwatchingmyfavouriteTVprogramme.sinceuntiluntiltill/untiltill/untilsinceP.55Completethesentenceswithsince,tilloruntil.GrammarCPresentationassoonasassoonas翻譯為“一…就…”。表示兩個(gè)動(dòng)作緊接著發(fā)生。e.g.ItbegantorainassoonasIleftthehouse.指未發(fā)生的動(dòng)作，主句一般將來時(shí)，從句用一般現(xiàn)在時(shí)e.g.

Hewillvisityouassoonashegetsthere.

【注意】有時(shí)為了特意表達(dá)剛完成某事就如何,需用現(xiàn)在完成時(shí)。e.g.IwillgowithyouassoonasIhavewashedmyface.

緊接著發(fā)生的兩個(gè)短動(dòng)作，主從句都用一般過去時(shí)e.g.HetookouthisEnglishbooksassoonas

hesatdown.【注意】不過，也有從句和主句都用一般現(xiàn)在時(shí)的情況

e.g.Assoonashefinisheshisclasswork,herunsoutoftheclass.Presentationwheneverwhenever意思是“每當(dāng)，任何時(shí)候，無論何時(shí)”，whenever可以用everytime,nomatterwhen替換。e.g.

Helikeslisteningtomusicwheneverhehastime.

Whenevershecomes,shebringsafriend.I’lldiscussitwithyouwheneveryoulike.1.Davidoftengoestoplaybasketball__________schoolisover.2.HewatchestheNBA_________thereisagameonTV.3._________hetalksaboutbasketball,hegetsexcited.4._________helearntthattheNBAplayerswouldcometoChina,hetriedhisbesttogetaticket.

assoonaswheneverWhenever

AssoonasP.56C1SimoniswritingaboutDavid’sloveforbasketball.HelpSimoncompletehissentenceswithassoonasorwhenever.P.56C2Davidiswritingabouthisuncle’sbasketballdream.Helphimcompletehisarticlewiththecorrectconjunctionsyouhavelearntinthisunit.Myuncledreamtofbecomingafamousbasketballplayerinhisteens.Heplayedinhisschool‘sbasketballteam______hewasastudent.Sadlymyunclehadabadaccident___________hewastraininghardforabigmatch.Hehurthiskneesbadly,andtheyneverfullygotbetter.Myunclewassosad._______hehadhisaccident,everyo