状语从句讲解课件

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,*,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,*,*,状语从句,状语从句,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,状语从句状语从句时间状语从句,1,1.,时间状语从句,1),由连词,when,while,as,as soon as,before,after,since,till/until,等引导。,主句用将来时，从句常用一般现在时表将来,I will tell him when he comes back.,1.时间状语从句1)由连词when,while,as,2,2)while,when,as,辨析,While,引导的时间状语从句,只指一段时间,，强调某一段时间内，主从句动作,同时,发生。从句动词常是,延续性,的,When,既可以指,一个时间点,也可以是一段时间，,可表示主从句的动作,同时,或,先后,发生。从句动词,可以是延续性,的，,也可以是非延续性,的。,As,强调主句,从句动作相并发生,译为”一边,一边,”,2)while,when,as辨析While引导的时间状,3,When,he returned,his wife was cooking.,While,he was reading,his wife was cooking.,He hurried home,looking behind,as,he went.,When he returned,his wife wa,4,对比训练,1,_ he heard this,he got very angry.,2.I met Lucy_ I was walking along the river.,3._ a child,he lived in the countryside.,A.when B.while C.as,对比训练 1,5,另外,when/while,还作并列连词,连接并列分句,while,表示“而,可是”,如,:,I like reading,while,my wife enjoys watching TV.,when,表示“就在这时”,在下列结构中，表示某件事正在发生或刚刚发生，另一动作同时发生。,1.be about to do when,2.be doing when,3.had done when,e.g.,We were about to start when it began to rain.,I was playing computer games when mom came in.,另外,when/while还作并列连词,连接并列分句,6,while,的用法小结,：,While I,was walking down,the street,I came across an old friend.(while=_),He likes pop music,while I am fond of folk music.(while,While I really dont like art,I find his work impressive.(while=_),when,although,but,while的用法小结：whenalthoughbut,7,We were about to leave_ it began to rain.,2.She thought I was talking about her son,_,in fact,I was talking about my son.,3.Hardly had I finished my composition _ the bell rang.,A.when B.while,C.as D.during,We were about to leave_ it,8,3)until/till(,不用于句首,),“,延续的动词（,肯定式,）,+until”,表示“直到,为止”,I,waited,for him until he came back.,“,非延续性动词（,否定式,）,+until”,表示“直到才”,He didnt,go,to bed until he finished his work.,Not until he saw it himself did he believe it.,注意,:not until,在句首时要倒装,3)until/till(不用于句首)“延续的动词（肯定式）,9,4),表示“一,就,”,的句型,(1)as soon as,once,the moment/minute/second,immediately/directly/instantly,As soon as he comes,Ill tell him.,The moment I saw him,I recognized him.,I left immediately the clock struck 5.,(2)on/upon doing/on(upon)ones+n,On arriving at the station,the thief was arrested.,On his arrival in Paris,he was recognized as a famous person.,4)表示“一就”的句型,10,5)Every time,each time,等也可以引导时间状语从句,Every time I caught a cold,I had pain in my head.,(3)no sooner than/hardly when/scarcely when,No sooner had they reached home than it started to rain.,Hardly had I entered the room when the telephone rang.,5)Every time,each time等也可以引导时,11,连接词,before,的小结：,1.We had sailed four days and four nights,before,we saw land.,2.We hadnt run a mile,before,he felt tired.,4.,Before,I could get in a word,he had measured me.,“,才”,“,不到,就”,“,还没来得及”,It will be a long time,before,It wont be long,before,It is/has been two years,since,sb did sth.,连接词before的小结：“才”“不到就”“还没,12,1,）句型,It will be/was,段时间,before,“,还要过多久才,”,如：,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,”,如：,It wasnt two years,before,he left the country.,1）句型It will be/was段时间before,13,一、若,since,引导的状语从句的谓语动词是终止性的过去时，则从句表示的时间是“从动作开始的那一时刻起”。如：,He has studied very hard since he came to our school.,自从他来到我们学校，他学习就非常 努力。,We have been missing them since they left here,自从他们离开这里，我们就一直很想念他们。,一、若since引导的状语从句的谓语动词是终止性的过去时，则,14,二、若,since,引导的状语从句的谓语动词是持续性动词或表示状态的动词的过去时时，则从句表示的时间是“从那持续动作或状态结束时算起”。如：,I havent heard any noise since I slept.,Sleep,为持续性动词，,sleep,的动作结束时，即“醒来”时，这句应译为“我醒后还未听到任何声音”。,John is now with his parents in New York,it is already three years since he was a teacher,约翰现在和父母一起住在纽约，他不当教师已经三年了。,二、若since引导的状语从句的谓语动词是持续性动词或表示状,15,How long is it since you lived in Shanghai?,你离开（没住在）上海多久了,延续性；不,多长时间了,It is half a month since he was a League member.,他退团（不当团员）半个月了。,Its been quite some time since I was last in London,我离开伦敦已很长时间了。比较：,He has written to me frequently since I was ill.,自从我病愈以来，他屡次给我写信。（从句谓语为状态动词）,He has written to me frequently since I fell ill.,自从我生病以来，他就屡次给我写信。,（从句谓语为终止性动词）,How long is it since you lived,16,ll let you know _ he comes back.,A.before B.because,C.as soon asD.although,It is about ten years _ I met you last.,since B.for,C.when D.as,_ we got to the station,the train had left already.,A.If B.Unless C.Since D.When,ll let you know _ he comes,17,We didn,t go home _ we finished the work.,A.since B.until C.because D.though,.He was about halfway through his meal _ a familiar voice came to his ears.A.why B.where C.when D.while,It was not _ she took off her dark glasses _ I realized she was a famous film star.A.when;that B.until;that C.until;when D.when;then,We didnt go home _ we fin,18,Scientists say it may be five or six years _ it is possible to test this medicine on human,patients.A.since B.after,C.before D.whe,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,Scientists say it may be five,19,_ I accept that he is not perfect,I do actua