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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,时间状语从句,Adverbial Clause,定义和构成形式,用作状语的从句叫作状语从句,.,状语从句由从属连词引导,修饰主句中的动词,形容词和副词等,。,可放句首或句末。,放句首时,从句后面用逗号;放句末时,不用逗号。,状语从句的分类,根据意义上的不同,英语状语从句分为,时间状语从句,地点状语从句,原因状语从句,目的状语从句,结果状语从句,条件状语从句,方式状语从句,让步状语从句,比较状语从句,时间状语从句,时间状语从句的引导词,when,while,as,before,after,since,until,till,as soon as,once,hardlywhen,no soonerthan,whenever,等,when,的用法小结,1.when,引导的时间状语从句的谓语动词可以是,可延续,的,也可以是表,短暂性,动作的动词,.,_,(,当电影结束时,),the people went back.,_ (,当我住在那里的时候,),I used to go to the seashore on Sundays.,When the film,ended,When I,lived,there,2.,可用作并列连词,其意义为“这时,突然”,相当于,and at this/that time,。常用于下列句式:,be doing,be about to do,sth,be on the point of doing,I,was about to,go out _,(,这时门铃响了,),.,One evening I was having my dinner_,.(,这时一个不速之客敲门了。,),+when,when the door bell rang,when an unexpected friend knocked my door,3.,还可以表示原因“既然”,相当于,since;considering that,。如:,It was foolish of you to take a taxi _ you could easily walk there in five minutes.,How can he get good grades _ he wont study?,when,when,4.When,的省略句型,:,当,when,引导的从句与主句主语一致,且从句中包含,be,动词时,可省略从句主语和,be,动词。,I have tried to keep this advice in mind _(,当我在写书的时候,),He gave good practical advice_(,当被问到的时候,),When_,do as the Romans do.(,入乡随俗,),We will do that only when_ necessary.,when(I am)writing the book.,when(he was)asked.,at Rome,(it is),when,while,as,引导的时间状语从句,1,主句表示的是,延续性动作,,而从句用,延续性动词,时,,when,while,as,可互换使用。,例句:,They talked about the matter _they walked.,2,表示动作的先后顺序,即某一动作发生之后,另一动作才发生,用,when,,一般不用,while,或,as,。,例句:,_(,当我到达火车站时,),I found the train had left.,when/while/as,When I got to the station,3,表示主、从动作在同时发生时,,when,后面的动词可为延续性动词,也可为瞬间动词;,但,while,后的动词必须是延续性动词,.,有时译为,“,趁着,”,例句:,(,1)_water becomes solid,we call it ice.,(2)_,I was cooking,I burnt my hand.,(3)We must strike _the iron is hot.,4,as,强调动词同时进行,常译成“正当”或“一边,一边,”,。表示“随着,”,,连词用,as,,不用,when,或,while,。,(1)She sings_(,她边走边唱,).,(2)_(,随着选举的临近,),the violence got worse.,When,While/When,while,as she goes along,As the election approached,till,until,和,notuntil,1.until/till,引导时间状语从句用于肯定句时,主句的动词是,延续性,动词,表示动作或状态一直持续到,until/till,所表示的时间,意为“某动作一直延续到某时间点才停止”。如:,We waited_.,直到他来,我才买了这本书。,2,用于否定句时,主句谓语动词是非延续性动词,从句为肯定,意为“某动作直到某时间才开始”。如:,I _(buy)this book until he came.,until he came,didnt buy,3,till,不可以置于句首,而,until,可以。如:,_you told me I had no idea of it.,4,notuntil,句型中的倒装和强调说法:,直到他来我才买这本书。,Not until he came,did,I buy this book.,It was,not until he came,that,I bought this book.,Until,before,一、含义,1,We had sailed four days and four nights before we saw land.,2,We hadnt run a mile before he felt tired.,3,Before I could get in a word,he had measured me.,才,就,不等,就,二,Before,从句中谓语不用否定式。如:,Before they reached the station,the train had gone.,三,1,)句型,It will be/was,段时间,before“,还要过多久才,”,如:还要过两年他才会离开乡村。,It will be two years before he leaves the country.,2,)句型,It will be/was not,一段时间,before“,不多久就,”,过了两年他就离开农村了。,如:,It wasnt two years before he left the country.,Since,1.since,表“自从”,所引从句使用非延续性动词,主句使用完成时态。,自从他大学毕业,他就一直在这个城市工作。,Since he graduated from the college,he has worked in this city.,若,since,所引从句使用延续性动词或状态动词的过去式,则表示动作或状态的完成或结束。,自从他不住在南京,我就没有收到过他的信。,Since he lived in Nanjing,I have not heard from him.,自从他不上学了(不是一个学生),他就再也没有回来过。,Since he was a student,he has never come back.,2.,句型,It,is/has been,段时间,since,时间的计算一律从,since,从句的 动作完成或状态结束时算起。如:,It,is/has been,three years since she,joined,the army.,自从她入伍到现在已经三年了。,It,is/has been,three years since she,was,in the army.,她离开部队已经三年了。,before/when/since/that,It was 8 pm._ they got to the village.,It was 8 hours _ they got to the village.,Its a long time _ I met you last.,It was at 8 pm._ they got to the village.,when,before,since,that,小结,1,一些词,如,the moment,the minute,the instant,等也可引导一个时 间状语从句,相当于,as soon as,的意思。,2.immediately,directly,instantly,也可引导时间状语,3.hardlywhen,scarcelywhen,no soonerthan,引导时间状语,相当于,as soon as,的意思。如果,hardly,或,no sooner,或,scarcely,置于句首,句子必 须用部分倒装结构。主句使用过去完成时,从句使用一般过去时。,4.,一些含有,time,的名词短语,如,every time,each time,next time,the first time,等,以及,the day,the year,the morning,等,也可引导一个时间状语从句。,He jumped off the stairs _the telephone rang.,They phoned me _they reached home.,我刚到家天就开始下雨了。,Hardly had I got home when it began to rain.,_he returned home,his father was already dead.,他回到家那天,他父亲已经去世了。,_you come,please bring your composition.,你下一次来的时候,请带来你的作文。,the moment,immediately,The day,Next time,1.(04,北京春,)We were swimming in the lake _ suddenly the storm started.,A.when B.while C.until D.before,2.(04,年江苏,)_ I accept that he is not perfect,I do actually like the person.,A.While B.Since C.Before D.Unless,3.(05,福建,),Did Jack come back early last night?,Yes.It was not yet eight oclock _ he arrived home.,A.before B.when C.thatD.until,A,A,B,4.(01,北京春,),Did you remember to give Mary the money you owed her?,Yes.I gave it to her _ I saw her.,A.while B.the moment C.suddenly D.once,5._ entered the office when he realized that he had forgotten his report.,A.He hardly had B.Had he hardly,C.Hardly had heD.Hardly he had,6.A good storyteller must be able to hold listeners curiosity _ he reaches the end of the story.,A.when B.unless C.after D.until,B,C,D,7.(03,年北京,)He made a mistake,but then he corrected the situation _ it got worse.,A.until B.when C.before D.as,8.(06,天津,)The cost of living in Glasgow is among the lowest in Britain,_ the quality of life is probably one of the highest.,A.since B.when C.as D.while,9.(1998,上海,)I thought her nice and honest _ I met her.,A.first time B.for the first time,C.the first time D.by the first time,C,D,C,10.(05,北京春,)It is almost five years _ we saw each other last time.,A.before B.since C.after D.because,11.(06,辽宁,)He was about halfway through his meal _ a familiar voice came to his ears.,A.why B.where C.when D.while,12.(06,四川,),Why didnt you tell him about the meeting?,He rushed out of the,room_I,could say a word.,A.before B.until C.when D.after,B,C,A,13.(05,上海,)He transplanted the little tree to the garden _ it was the best time for it.,A.where B.when C.that D.until,14.-How long do you think it will be _ China sends a manned spaceship to the moon?,-Perhaps two or three years.,(,06,福建),A.when B.until C.thatD.before,15.,Im going to the post office.,youre there,can you get me some stamps?,A.As,B.While,C.Because,D.If,B,D,B,16.Mother was worried because little Alice was ill,especially _ Father was away in France.(94),A.as B.that C.during D.if,17.Generally speaking,_ according to the directions,the drug has no side effect.(03,上海,),A.when takingB.when taken,C.when to take D.when to be taken,18.Several weeks had gone by _I realized the painting was missing.(04),A.as B.before C.since D.when,A,B,B,19.That was really a splendid evening.It s years _ I enjoyed myself so much.(05,安徽,),A.when B.that C.before D.since,20.How can you expect to learn anything _ you never listen?,(,06,山东),A.in case B.even if C.unless D.when,D,D,Homework,1.Go over the key points.,2.Finish the exercises for the adverbial clause.,while,I like tea while she likes coffee.,While they are my neighbors,I dont know them well.,While there is life,there is hope.,然而,(,对比,),尽管,(,句首,),只要,as,As you werent there I left a message.,Young as I am,I already know what career I want to follow.,Do as I say and sit down.,因为,(,句首,),尽管,(,倒装,),以,.,方式,
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