except for可加whenas引导的让步状语从句时间状语从句吗

since 和 for 引导的时间状语从句都表示一段时间对吗 不管since加过去时间点 还是for加一段时间_百度知道
since 和 for 引导的时间状语从句都表示一段时间对吗 不管since加过去时间点 还是for加一段时间
大体是都表示一段时间对吗
提问者采纳
Since可引导时间状语从句,for不可以引导状从,二者后都可加时间词
我知道了 谢谢!
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你可能喜欢时间状语从句 知识讲解 when,while,as引导时间状语从句的区别 (北京四中网校-〉名师答疑-〉高一-〉英语) 
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  时间状语从句 知识讲解 when,while,as引导时间状语从句的区别
  when,&while,as,三者引导时间状语从句的区别与联系老师请您详细的讲解一下,每次都错。
  when,while,as
  when,while,as引导时间状语从句的区别
&
when,while,as显然都可以引导时间状语从句,但用法区别非常大。&
一、when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用。&
①&Why&do&you&want&a&new&job&when&you've&got&such&a&good&one&already?(get为短暂性动词)你已经找到如此好的工作,为何还想再找新的?&
②Sorry,I&was&out&when&you&called&me.(call为短暂性动词)对不起,你打电话时我刚好外出了。&
③Strike&while&the&iron&is&hot.(is为延续性动词,表示一种持续的状态)趁热打铁。&
④&The&students&took&notes&as&they&listened.(listen为延续性动词)学生们边听课边做笔记。&
二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生;while和as从句的谓语动作必须是和主句谓语动作同时发生。&
1.从句动作在主句动作前发生,只用&when。&
①When&he&had&finished&his&homework,he&took&a&short&rest.(finished先发生)当他完成作业后,他休息了一会儿。&
②When&I&got&to&the&airport,the&guests&had&left.(got&to后发生)当我赶到飞机场时,客人们已经离开了。&
2.从句动作和主句动作同时发生,且从句动作为延续性动词时,when,while,as都可使用。&
①When&/While&/As&we&were&dancing,a&stranger&came&in.(dance为延续性动词)当我们跳舞时,一位陌生人走了进来。&
②When&/While&/As&she&was&making&a&phonecall,I&was&writing&a&letter.(make为延续性动词)当她在打电话时,我正在写信。&
3.当主句、从句动作同时进行,从句动作的时间概念淡化,而主要表示主句动作发生的背景或条件时,只能用&as。这时,as常表示“随着……”;“一边……,一边……”之意。&
①&As&the&time&went&on,the&weather&got&worse.(as表示“随着……”之意)&
②&The&atmosphere&gets&thinner&and&thinner&as&the&height&increases.随着高度的增加,大气越来越稀薄。&
③As&years&go&by,China&is&getting&stronger&and&richer.随着时间一年一年过去,中国变得越来越富强了。&
④The&little&girls&sang&as&they&went.小姑娘们一边走,一边唱。&
⑤The&sad&mother&sat&on&the&roadside,shouting&as&she&was&crying.伤心的妈妈坐在路边,边哭边叫。&
4.在将来时从句中,常用when,且从句须用一般时代替将来时。&
①You&shall&borrow&the&book&when&I&have&finished&reading&it.在我读完这本书后,你可以借阅。&
②When&the&manager&comes&here&for&a&visit&next&week,I'll&talk&with&him&about&this.下周,经理来这参观时,我会和他谈谈此事。&
三、when用于表示“一……就……”的句型中(指过去的事情)。&
sb.had&hardly(=scarcely)&done&sth.when...=Hardly&/&Scarcely&had&sb.done&sth.when...&
①I&had&hardly&/scarcely&closed&my&eyes&when&someone&knocked&at&the&door.=Hardly&/&Scarcely&had&I&closed&my&eyes&when&someone&knocked&at&the&door.我刚一闭上眼,就有人在敲门了。&
②I&had&hardly&/scarcely&entered&my&room&when&the&telephone&rang.=Hardly&/Scarcely&had&I&entered&my&room&when&the&telephone&rang.我刚一走进房门,电话就响了。
f6_liudengqias引导的时间状语从句
& & & 由when, while, as引导的时间状语从句,这个中间有很多要点,用的不合适容易贻笑大方~ & & 先看几个例句: & & &When you think you know nothing, then you begin to know something.当你以为自己一无所知的时候,你就是在开始知道一些事物了。  When truth is buried under the ground it grows, it chokes, it gathers such an explosive force that on the day it bursts out , it blows up everything with it.当真理被埋在地下的时候,它在生长,它感到压抑,它蓄存着这么一种爆炸性力量,一旦冒出,它就会炸破一切!  Strike while the iron is hot. 趁热打铁。  Will you watch my clothes while I have a swim. 我游泳的时候,请你照看一下我的衣服。  You can feel the air moving as your hand pushes through it. 当你的手在空气中挥动的时候,你就能感觉到空气在流动。  Our headmaster laughed as she spoke.我们的校长边谈边笑。  a .when, while和as的区别  when引导的从句的谓语动词可以是延续性的动词,又可以是瞬时动词。并且when有时表示“就在那时”。  例如:  When she came in, I was eating.她进来时,我在吃饭。(瞬时动词)  When I lived in the countryside, I used to carry some water for him.当的住在农村时,我常常为他担水。(延续性的动词)  We were about to leave when he came in.我们就要离开,就在那时他进来了。  While引导的从句的谓语动作必须是延续性的,并强调主句和从句的动作同时发生(或者相对应)。并且while有时还可以表示对比。例如:  While my wife was reading the newspaper, I was watching TV. (was reading是延续性的动词,was reading和was watching同时发生)  I like playing football while you like playing basketball.我喜欢踢足球,而你喜欢打篮球。(对比)  b, As表示“一边……一边”,as引导的动作是延续性的动作,一般用于主句和从句动作同时发生;as也可以强调“一先一后。例如:  We always sing as we walk.我们总是边走边唱。(as表示“一边……一边”)  As we was going out, it began to snow.当我们出门时,开始下雪了。(as强调句中两个动作紧接着先后发生,而不强调开始下雪的特定时间)  c, as when while的辨析  as when while都表示主、从句动作同时发生,三者差异如下:  表示“一边。。。一边&的意思  as 强调两个动作同时进行,并表示对比时  用于发生时间较段时 d when  1、还可以表示从句动词的动作在主几句动词的动作&之前 &或&之后&发生。  2、when= at that moment (正在那个时候)  3.常用于常见搭配中  e while  1、用于时间较长时  2、 强调两个动作同时进行,并表示对比时  有时这三个连词可以互换,有时不可以。  lt was raining hard when (as) I got there.  我到那里时,正在下大雨。 ( 动作同时发生,when可换为as, 但不能换为while,因为get是点动词.)  When I had read the article, he called me.  我看完这篇文章之后,她给我打了电话。( 从句动作发生在主句之前,注意时态表达,只能用when )  When I got to the cinema, the film had begun.  (当)我到了电影院时,电影已经开演了。(从句的动作发生在主句之后,只能用when,并要注意时态)  He was about to leave, when the telephone rang.  他正要离开,忽然电话响了。( 此时不能放在句首。主句动词一般表达 “正在” “即将”.  while, as不能代替  She thought I was talking about her daughter, while, in fact, I was talking about my daughter.  他以为我在谈她女儿,然而,实际上在谈论我女儿。(表转折,对比,when, as都不能代替它)  While the alien was buying a souvenir, the girl called the police.  外星人买纪念品时,那女孩给警察打了电话。(表示主句,从句的动作同时发生,while后引导的状语从句的动词必须是延续动词不能是点动词,因为它表示较长时间)  Mother was worried because little Alice was ill, especially as (when/ while) father was away.  妈妈担心,因为小爱丽丝病了,特别是他父亲不在家的时候。(此时as ,when, while可通用)让步状语从句_百度百科
让步状语从句
让步状语从句是状语从句中的一种,其本身也是。一般翻译为“尽管……”或“即使……”,就是我们日常生活中用的“退一步说…”的感觉。
引导让步状语从句的主要有以下这些:though,although,while, even if, whether...or...; no matter+疑问词,疑问词-ever,regardless of+名词/名词短语/名词从句,despite,in spite of。切记although,though 不可与but连用,但可以与still和yet连用。
⑴though, although
表示“虽然,纵然”之意
这两个连词意思大致相同,在一般情况下可以互换使用。在中,though较常使用,although比though正式,二者都可与yet,still或never,the less连用,但不能与but连用。例如:
I will remains firm though I must lower my physical sights.尽管我得降低体育(锻炼)的目标,但我的意志是坚强的。
Though I believe it,yet I must consider.尽管我相信这一点,但我还得考虑考虑。
Although/Though he was exhausted,(still) he kept on working.虽然他已经精疲力竭了,但仍然继续工作。
Although/Though he is very old,(yet) he is quite strong.他虽然年纪大了,身体还很健壮。
值得注意的是,although引导的让步状语从句位于主句之前的情况较多,though引导的让步状语从句可位于主句之前或主句之后。例如:
She passed the examination though she had not studied very hard. 她虽然不用功学习,考试却及格了。
⑵as(though)
表示“虽然…但是”,“纵使…”之意
as引导的让步从句必须以部分倒装的形式出现,被倒装的部分可以是、状语或,though也可用于这样的结构中,但although不可以这样用。例如:
Object as/though you may, I’ll go.(=Though/Although you may object, I’ll go.)纵使你反对,我也要去。
Hard as/ though he works,he makes little progress. (=Though he works hard,he makes little progress.)尽管他学习很努力,但几乎没取得什么进步。
Child as/though he was,he knew what was the right thing to do.(=Though he was a child,he knew what was the right thing to do.)虽然他是一个孩子,但他知道该做什么。
Fast as you read, you can’t finish the book so soon.纵然你读得快,你也不能这么快读完这本书。
Lover of towns as I am,I realize that I owe a debt to my early country life.尽管我爱城市,但我知道,以往的乡村生活使我受益匪浅。
Small as atome are, they are made up of still smaller units.尽管原子很小,但它们由更小的单位构成。
由这一个复合连词引导的让步状语从句旨在说明正反两方面的可能性都不会影响主句的意向或结果,所以它的语气是比较强烈的,从而也更加坚定了主句的内容。例如:
You'll have to attend the ceremony whether you're free or busy.不管你忙不忙,都要参加这个典礼。
Whether you believe it or not,it's true.无论你是否相信,这都是真的。
Whether or not they win this battle,they won't win the war.不管他们是否能赢得这次战役,他们绝不会赢得这场战争。[1]
﹙3﹚“no matter+疑问词=疑问词-ever
含义为“……都……;不管……都……”
它们引导的让步状语从句可以互换。例如:
No matter what happened, he would not mind. (=Whatever happened,he would not mind.)无论发生了什么事情,他都不会介意的。
No matter who you are, you must keep the law.(=Whoever you are,you must keep the law.)不管你是谁,你都需要遵纪守法。
When anyone does something for you, no matter how samll and no matter whether he's a superior or servant, it's proper to say“Thank you”.只要任何人替你做了一件事,不管事情多么微不足道,也不管他是你的上司还是你的仆人,你都应该说声“谢谢”。
但“no matter+疑问词”结构只能引导让步状语从句,而“疑问词-ever”还可以引导。例如:
Whatever (=No matter what) you say, I won’t believe you. (Whatever 引导让步状语句)无论你说什么,我都不会相信你。
I'll eat whatever (≠no matter what) you give me. (whatever引导)你给我吃什么,我就吃什么。
Whoever comes will be welcome. (Whoever 引导)不管谁来都受到欢迎。
此外,有时while也可以引导让步状语从句,但一般要位于句首。例如:
While I like the colour, I don't like the shape.我虽然喜欢那颜色,但不喜欢那形状。
综上所述,我们可以看出,学习让步状语从句的关键是关联词的选用;其次,要注意的是由as引导的让步状语从句要用倒装语序。
⑷whether...or...
表示“不论是否……”,“不管是……还是……”之意。
总论与注意事项
让步状语从句表示:虽然,尽管,即使等概念,由although, though(尽管,即使),however(无论怎样),whatever(无论什么),whoever(无论谁),whomever(无论谁),whichever(无论哪个),whenever(无论何时),wherever(无论哪里),whether(是否),no matter (who,what,where,when,etc) (无论……),even if(即使),even though(即使)等词引导。
如:We won’t be discouraged even if (=even though) we fail ten times.我们就是失败十次也不泄气。
It was an exciting game,though/although no goals were scored.那是一场精彩的球赛,尽管一个球都没进。(though, although不能与but连用)
Whether you believe it or not,it’s true.不管你信不信,这是真的。
However (=No matter how) expensive it may be,I’ll take it.无论它有多贵,我也要买下它。
Don’t let them in,whoever(=no matter who) they are.不管他们是谁,别让他们进来。
No matter what I say or how I say it,he always thinks I’m wrong.无论我说什么或怎么说,他总认为是我错。
even if 与even though 的区别:
1.even if 与even though 的区别 两者均可用于引导让步状语从句,其细微区别是:
1. even if 引导的从句是往往是假设性的,相当于汉语的“即使”“纵然”“就算”“哪怕”。如:
They’ll stand by you even if you don’t succeed. 即使你不成功,他们也会支持你。
Even if I have to walk all the way I’ll get there. 即使我得一路走着去,我也要走到那里。
Even if it rains tomorrow, we won’t change our plan. 即使明天下雨,我们也决不改变计划。
For my part, I plan to go to the party even if you decide not to go. 至于我,即使你决定不去参加晚会我也会去的。
Even if you saw him pick up the money, you can’t be sure he stole it. 就算你看见是他拾起的钱,你也不能肯定钱就是他偷的。
正因为even if从句的内容通常是假设性的,所以有时还可用于虚拟语气;这样用的even if 与单独使用的if比较接近。如:
Even if he had the money, he wouldn’t buy it. 他即使有钱也不会买它。
I would have married her even if she had been penniless. 即使她身无分文,我也会和她结婚。
2.even though 引导的从句内容往往是真实的,主要用于引出不利用于主句情况的信息,相当于汉语的“尽管”“虽然”。如:
He went out even though it was raining. 尽管在下雨,他还是出去了。
Even though it’s hard work, I enjoy it. 虽然工作艰苦,我还是很喜欢。
He’s the best teacher even though he has the least experience. 他尽管经验最少,但教得最好。
Even though I didn’t know anybody at the party, I had a nice time. 尽管这次聚会上我谁也不认识,我也玩得挺痛快。
这样用的even though与though或although的意思比较接近,许多时候可以互换(注意:英语可以说though和even though,但不能说even although)。如:
Even though [Thought, Although] I felt sorry for him, l was secretly pleased tha t he was having difficulties. 虽然我为他感到惋惜,但对他的困难却暗自高兴。
Even though [Thought, Although] we all tried our best, we lost the game. 虽然我们已尽了最大的力量,但还是输了。
3.不过,在实际语言运用中,even if与even though有时也可不加区别地混用。如:
Even if [Even though] she laughs at him, he likes her. 尽管她嘲笑他,他还是很喜欢她。
We thoroughly understand each other, even if [even though] we don’t always agree. 我们彼此非常了解,虽然有时候也有一些分歧。
4.no matter
what(who,which,when,etc.)与whatever(whoever,whichever,whenever,etc.)的区别:
当引导引导让步状语从句时,两者相同,可以互换(what=the thing, whatever = anyting),但当引导名词性从句(主语从句,宾语从句,和同位语从句)时则只能用whatever(whoever,whichever,whenever,etc)。如上面最后两个例句可改为:
However pure the water looks,I do not want to drink it.
I want to marry the man I love,no matter who he may be.
下面句子不能用no matter结构(no matter不能引导名词性从句):
Whoever comes back first is supposed to win the prize.(主语从句)
I am ready to do whatever you want me to .(宾语从句)
Whatever you did,I will accept.为让步状语从句.
I will accept whatever you did.为宾语从句.
5.as 引导让步状语从句的用法
引导让步状语从句时,as意为“虽然,尽管”,通常从句要倒装,倒装的方法是将从句的表语或状语放在as之前,而用though引导让步状语从句时句字则不必倒装(口语中也可倒装)。
e.g. Heavily as it was raining outside,they started out very early.
Young as he is,he knows a lot=Though he is young 或Young though he is,he….
他虽然年轻,但懂得很多。(though 也有这种用法,可以替换as,但although没有这种用法)
注意,名词提句首时,不加冠词:
e.g:teacher as he is,he likes Chinese very much(teacher 前不加a或the)。
though还可以用作,放在句末。如:
It was a hard work, I enjoyed it, though=It was a hard work,but I enjoyed it.那工作很苦,但是我喜欢干。
6.用though/although, as 引导让步状语从句时,句中不能用but表示转折语气。
不能说:Though he looks weak,but he is healthy.
而要说:Though he looks weak,he is healthy.
或者说:He looks weak,but he is healthy.
我自己认为让步就是存在一定条件下的说法.
though和although引导让步状语从句时,不可以与but连用。汉语中用&虽然……但是……”,但英语中只用though,although或but即可。
although/though he is very old, he still works very hard.=(he is very old, he still works very hard)虽然他老了,但他仍然很努力地工作。不可说:although/though he is very old, but he still works very hard。
though和although可以与yet连用。此处yet虽与but同义,但它不是连词,而是副词。
though l knew the fact,yet l didnt say anything。尽管我知道,但我什么都没说。
7.however 用作副词,不可连接句子。但可置于第二句的句首、句末或句中。要特别注意标点的使用。
eg: Alice is a good student.However, she has one shortcoming.爱丽丝是一个很好的学生,但她仍有缺点。He has not arrived. He may, however, come later. The composition is all right. There is room for improvement,however.
8.除以上提到的从句连词外,表示让步的介词短语有despite, in spite of,后接名词。eg. Despite all these facts, we cannot ignore the advantages of learning through internet.
孟宪珍.无敌英语语法:外文社,2006}

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