状语从句 (2).ppt
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1、状语从句,一、时间状语从句,引导时间状语从句的从属连词:1、When 当.时候When I lived there,I used to go to the seashore on Sundays.我住在那里时,星期天常到海滨去。2、While 在.期间Please dont talk so loud while others are working.别人在工作时,请别这么大声谈话。,3、as 一边.一边;随着.As time goes on,its getting warmer and warmer.随着时间的推移,天气变得越来越暖和了。说明:如果主句表示的是短暂性动作,而从句用延续性动词的进
2、行时态表示在一段时间内正在进行的动作时,when,while,与as 可互相使用。When While as I was walking down the street,I came across an old friend of mine.我正沿着大街走时,碰巧遇到了我的一位老朋友。,注:as 当连词还有其他三种常用用法:依照Please try to pronounce the word as I do.请试着跟我读这个词。虽然Strange as it may seem,nobody was injured in the accident.这看起来可能很奇怪,这次事故竟然没有人受伤。因为
3、As I had a cold,I was absent from school.因为我感冒了,所以没去上课。,4、as soon as/immediately/directly/instantly/the moment/the minute/the instant/no sooner.than./hardly.when.一.就这些从属连词所在的从句都表示从句的动作一发生,主句的动作随即就发生。The moment I heard the voice,I knew father was coming.一听到那个声音,我就知道父亲来了。,No sooner had we arrived at t
4、he station than the train left.我们刚到车站,火车就开走了。The boy burst into tears immediately he saw his mother.那个男孩一见到他妈妈便放声大哭。,注意:1)no sooner 与 hardly/scarcely 所在的句子谓语动词应用过去完成时;no sooner 与 hardly/scarcely放到句首时,所属从句用倒装语序;2)than 与when 引导的句子谓语动词用一般过去时;I had hardly got home when it began to rain.Hardly had I got
5、home when it began to rain.我一回到家就开始下雨了。,5 till,until 和 not until肯定句:主句谓语动词必须是延续性动词的肯定式,意为“某动作一直延续到某时间点才停止”。如:He remained there until she arrived.他一直待在那儿直到她到了。You may stay here until the rain stops.你在这里可待到雨停。,2)否定句:主句谓语动词必须是非延续性动词,意为“某动作直到某时间才开始”。如:He wont go to bed till/until she returns.直到她回来他才会去睡。
6、not.Until 句型中的强调和倒装用法:It was not until you told me that I had any idea of it.(强调句型)Not until you told me did I have any idea of it.(not until 引导从句至于句首,主句要倒装)直到你告诉我,我才知道那件事。,6.before1)可表达:“还未.就.;不到.就.;.才.;还没来得及.就.”如:We had sailed four days and four nights before we saw land.我们航行了四天四夜才看到陆地。We hadnt ru
7、n a mile before he felt tired.我们跑了还不到一英里他就累了。Before I could get in a word,he had measured me.我还没来得及插话,他就已经给我量好了尺寸。,It will be+一段时间+before.多久之后才.It will be half a year before I come back.半年后我才会回来。It wont be long before we meet again.过不了多久我们就会再见面。,7 Since1)since 从句的时态若是一般过去时,相应的,主句中的时态是现在完成时或现在完成进行时。I
8、 have written home four times since I came here.自从我来到这里,我已经给家里写了四次信了。She has been working in this factory since she left school.她离开学校以后就一直在这个工厂工作。,2)常见的句型:“It is+一段时间+since从句 自.以来有.”。如:It is three years since the war broke out.自战争爆发以来有三年了。since 当连词是还有一种其他常用用法:“既然”,可与“now that”互换。如:Since were young w
9、e shouldnt be too afraid of making mistakes.因为我们还年轻,所以不应该太害怕犯错误。,8 every time,each time,next time,the first time,any time 等名词短语用来引导时间状语从句,表示“每当.;每次.;下次.”。如:Every/Each time I was in trouble,he would come to help me out.每次我有困难时,他都会帮我解决。Next time you come,do remember to bring your son here.下次来时,一定记得带着你
10、儿子。,1、引导地点状语从句的从属连词有where,wherever.We should go where the Party needs us most.我们应该去党最需要我们的地方。You are free to go wherever you like.你愿意去哪里就去哪里。2、注意区分where 引导的定语从句与状语从句。Youd better make a mark where you have any question.(状语从句)Youd better make a mark at the place where you have any questions.(定语从句)你最好在
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