引導詞：when(當…時候);while(當…時候);as(當…時候);aassoonas(一…就…);since(1)IwillringyouAssoonasIgettoNewYor(2)IwilltellhimeverythingwhenhWhenhecomesback,Iwilltellhimev(3)Hewon’tbelieveituntuntilheseesitwithhisowneyes,Hewon’t主句（用過去進行時，謂語動詞是延續(xù)性動詞）+when/as/while+例如：(1)Mymotherwascookingwhilemyfatherwa(2)Thestudentswerereadingwhenthet(1)Let’swaittilltherains(2)Wewon’tstartu連接詞：由連詞because（從句位置靈活）,since,as（從（1）Ididn’tgotoschoolyesterdayb（2）As/Sinceitisrainingnow,wehad連接詞：if如果,unless(=ifnot)除非。（主將從現(xiàn)原則）舉例：Ifitdoesn’traintomorrow,wewillgohiking.(1)IwillhelpyouwithyourEnglishifIamfreetomorrow.(3)Wewillhaveapicnicifitdoesn’traintomorrow.(1)Hurryup,oryou’llbelate.=Ifyoudon’thurryup,you’llbelate.(2)Studyhardandyouwillpasstheexam.=Ifyoustudyhard,youwiHehaslosthisbikesothatYourshirtweresodirtythatyoumuThough/Althoughhetriedhard,hewasnotHewentonworkingthoughitwasveLet’sstudyasLeiFengstudied.讓我們像雷鋒那樣學習吧。ThinkasIthink.像我這樣去想。Hetalksasif/thoughheisdrunk.從他談話的樣子來看他好像醉了。PleasepronouncethewordthewayIdo.請照我這樣,讀這個單詞.()1.Tomdidn’teatdinnA.orB.whileC.ifD.【答案】C吃飯。”()2.—We'llgoforapi—Wishyoualovelyweekend.A.rainB.doesn'trainC.won【答案】B()3.Teresaisnervous【答案】C()4.--What'syourplan【答案】C()5.—We'llgoforapi—Wishyoualovelyweekend.A.rainB.doesn'trainC.won【答案】BA.butB.for2.Whichmobilephonewouldyouliketobuy,aNokiaan3.JackwashalfanhourlateforthepartyhewasstuckinatrA.unlessB.whileC.becauseD.if4.Myuncledoesn’thavemuchmoney,healwaysenjoyshimself.5.Wemustdosomethingtoprotecttheearth,betterafter-salesserv7.theWorldExpowasover,alotofvithemselvesandtakepA.AlthoughB.Since9.MyfatherwaspreparingforhisspeechmyA.whileB.untilC.unless10.WewillrememberthA.untilB.ifC.beforeD.after11.Themanagerthoughttheoldladywasrigh14.WillyouhelphimyoA.thoughB.whenC.becauseD.ifA.whenB.beforeC.untilD.thouA.unlessB.untilC.ifD.or2.Thevolleyballmatchwillbeputoffifit.A.willrainB.rainsC.rainedA.arriveB.arrives4.--DidDavidgoto--No,A.becauseB.ifC.thoughD.but5.he’sold,6.AsshethenewA.read,wasfallingC.wasreading,wasfalling7.Itis50yearsthePeople’sRepublicofChinawasA.afterB.before9.IoftenvisitedTian’anA.untilB.duringA.becauseB.unlessif2.Don’tstayuptoolate,you’llfif1.t2.Idecidednottobuyfrozendumplings3.Puttheseusedbatteriesintothegreenbins,itwillpollute4.Ihavesomething1.Ican’tunderstandthe2.Domoreexerciseeveryday,you’llbestrongert youhavebeeninBeijingformanyyears,youmustbefamiliarwith1A.becauseB.untilC.whyD.if()2TheboyA.wentnot;untilB.didn'tgo;afterC.went;untilD.A.beforeB.untilC.afterD.()4HehomeshewassatisA.didn'tgo;until;withB.wasn'tC.doesn'tgo;before;withD.didnA.isn't;willbeB.isn't;isC.won'tbe;willbe()6Theydidn'tstartthewoA.untilB.whileC.assoonasD.if2A.arrivesB.willreachC.arrivesinD.get3A.hasbought;wasboughtB.hasgot;isbought,C.wasbought;hasbough()3Theboytoldhisfatherwhatheinthest()4WeTA.watched;wasringingB.werewatchin()5BytheendoflasA.hadfinishedreadingB.havefinishr4C.haven'tseen;have;beenD.haven'tseA.hasbeenB.hasbeeninC.hasbeentoD.hasbee-Sorry,butheforamonth.A.hadbeenawayB.wasleftC.A.knowB.haveknownC.knewD.willA.was;studyingB.will;s5A.becauseB.butC.untilD.if()3youworkhard,youA.ThoughB.IfC.BecauseD.For()4hecametostudyintheuniversity,hehasmademuchA.forB.unlessC.ifD.whether6-No,wedon't.Atleast,notA.as