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1、（原创精品）2013年普通高考英语科语法知识网络专题11 状语从句种 类从属连词例 句说 明时间状从WhenwheneverWhen I came into the room, he was writing a letter.当我进屋时，他正在写信。We shall go there whenever we are free.我们什么时间有空，我们就去那里。when指的是“某一具体的时间”whenever指的是“在任何时间”whenI was walking along the street when suddenly someone patted me on the shoulder fro
2、m behind.我正在街上走着，这时忽然有人从后面拍我的肩膀。when意为“这时”或“在那个时候”,可以看作是并列句,这种用法的when分句一般位于句末。whileWhile it was raining, they went out.天下雨的时候，他们出去了。I stayed while he was away.他不在的时候我在。while指“在某一段时间里”，“在期间”，while引导的动作必须是持续性的asHe hurried home, looking behind as he went.他赶快回家，不时地一边走一边向后看。as引导持续性动作，强调主句和从句的动作同时发生before
3、Be a pupil before you become a teacher.先做学生，再做先生。afterHe arrived after the game started.比赛开始后，他到了。tillWe waited till (until)he came back .我们一直等到他回来。如主句动词是持续性动作，常用肯定式，表示“直到为止”untilShe didnt stop working until eleven oclock .她到11点钟才停止工作。Until he had passed out of sight, she stood there.她站在那里看着，直到看不见他的
4、身影。如主句动词是瞬间动词，常用否定式，表示“直才”“在以前不”,从句放在句首表示强调，一般用untilsinceas soon asGreat changes have taken place in China since 1978.自从1978年以来中国发生了巨大的变化。As soon as I arrive in Shanghai, Ill write to you.我一到上海就给你写信。状语从句在主句之前时一般用逗号与主句分开，如从句在主句之后则不必用标点符号。hardlywhenno soonerthanI had hardly got home when it began to r
5、ain.我刚一到家，就下雨了。=Hardly had I got home when it began to rain.No sooner had we got to the station than the train left.我们刚到车站，火车就走了。Hardly had we begun when we were told to stop.我们刚开始就被叫停。hardlywhen和no soonerthan的意义相当于as soon as,但只表示过去发生的事情，主句为过去完成时，从句为过去时，如hardly或no sooner位于句首时语气强，而且主句的谓语要用部分倒装every t
6、ime, by the time, the moment等Every time I travelled by boat, I got seasick.我每次乘船都晕船。The moment I heard the song, I felt cheerful.我一听到这首歌，就感到很愉快。Next time you come ,youll see him.下次你来的时候，就会见到他。在时间状语从句中，不能用将来时或过去将来时，而要用现在时或过去时代替将来时地点状从wherewhereverWhere there is a will, there is a way.有志者，事竟成。Where th
7、ere is water there is life.哪里有水，哪里就有生命。You are free to go wherever you like.你可以随意到你喜欢的任何地方去。Wherever you go, you must obey the law.无论你去哪都要遵守法律。where与wherever意义基本相同，但后者语气较强，多用于书面语原因状从becauseI came back late yesterday because I was on duty.昨天我回来晚了，因为我值班。because用来回答why 的问题，语气最强sinceSince everyone is he
8、re, lets begin our meeting.既然大家都到了，我们开始开会。since表示既然或全已知的理由,稍加分析即可表明的原因,多放句首asAs he didnt know much English, he looked up the word in the dictionary .由于他英语懂得不多，他在字典中查阅这个单词。从句常放在句首，说明原因，主句说明结果，常用于口语中。now that, seeing thatNow (that) the weather has cleared up, we can start our journey.鉴于天气已经晴朗，我们可以启程了。
9、Seeing (that) he was badly ill, we sent for the doctor.鉴于他病情严重，我们派人去请医生去了。seeing (that), now that 和since, as 意义相似，他们都有“鉴于某个事实”的意思，that可以省去目的状从thatso thatin order thatlest = for fear thatI shall write down your telephone number that I may not forget.我要把你的电话号码记下来，以免忘记。Well tell you the truth so that y
10、ou can judge for yourself.我把真实情况告诉你，使你能自己作出判断。They worked harder than usual in order that they could finish the work ahead of time .他们比往常更加努力工作，为了能提前完成工作。Put on more clothes lest (= for fear that ) you should catch cold.多穿点衣服，以免感冒。目的状语从句中常用情态动词may (might) can (could) ,should 等放在动词之前，从句往往放在主句之后，主从句之间
11、不用任何标点符号结果状从so thatsothatWe turned up the radio, so that everyone heard the news.我们把收音机的音量放大，大家都听到了新闻。He was so excited that he couldnt say a word.他十分激动，以致一句话都说不出来。so that前有逗号为结果状语从句sothat的so后面跟形容词或副词suchthatHe gave such important reasons that he was excused.他说出了这么重要的理由，得到大家的谅解。It is such an interes
12、ting novel that all of us want to read it. It is so interesting a novel that all of us want to read it.这是一本十分有趣的书，大家都想看。suchthat的such后面跟名词，如果名词是单数就要用such a /anthat还可以转换用sothat，语气较强条件状从ifunlessas/so long asin caseso far asDifficulties are nothing if we are not afraid of them.如果我们不怕困难，困难就算不了什么了。We sha
13、ll go there tomorrow unless it rains.除非下雨，我们明天就去那里。= We shall go there tomorrow if it doesnt rain.So/As long as you work hard, you will succeed.只要你努力工作，你就一定能成功。In case I forget, please remind me about it .万一我忘了，请提醒我一下。So far as I know, the book will be published next month.据我所知，那本书下月出版。unless从句的谓语只能
14、用肯定式。unless和ifnot同义，unless是书面语，ifnot是口语，通常二者可以换用条件状语从句中的谓语动词的时态一般要用现在时或过去时代替一般将来时或过去将来时方式状从asas ifas thoughDraw a cat as I taught you .按照我教你的画一只猫。Do as you are told.按照人家告诉你做的去做。She looks as if she is ill.看上去她好象是生病了。He acted as if (though) nothing had happened.他的行动就好象什么也没有发生。They treat the black boy
15、as if (though) he were an animal.他们对待这黑孩子仿佛他是一头牲口。此处as译为：按照或正如as if或as though的意义和用法基本一样。从句中可以用现在时表示可能符合事实，也可以用虚拟语气让步状从althoughthoughAlthough (Though) he was over sixty, (yet) he began to learn French.虽然他六十多岁了，但仍开始学习法语 。We were not tired though (although) we had worked all day.虽然我们干了一天活，但并不累。在句子中一般用了“虽然”就不能再用“但是”（but）但可以与yet或still连用。though / although意义相同，用法基本一样，前者通俗，口语化，后者正式多放主句的前面even if,e
