定语从句中as和which的区别
定语从句中as和which的区别
作者：王铮
来源：《外语学法教法研究》2009年第06期
一、在限制性定语从句中
在such或 the same之后常用as 作为关系代词引导定语从句,不用which。
such, the same与as 搭配使用,as充当定语从句的主语或宾语。
1.Have you read such a book as I bought yesterday? (as作宾语)
2.Such tourists as know Guilin think its scenery is superb. (作主语)
3.I once ran into the same trouble as you did years ago. (作宾语)
另外,the same 之后也可以跟that 引导的定语从句表同一关系。
He has been admitted to the same university that his brother studies in.
二、在非限制性定语从句中
(一)as可用在句首或句中,而 which 引导的定语从句只用在句中。
1.As the world know, China successfully hosted the 29th Olympic Games in 2008.
2.The engineer was suddenly kidnapped, which surprised his college.
3.If Ken comes late, as is usual for another time, we will not receive him any more.
(二)which用作关系代词,可用来代指上文某个词也可以代指上文的整个句子,而 as只用来代指整个句子。
1.As was announced, only one of the participants passed the test.
2.The manager held a meeting, which lasted two hours.
(三)在which引导的定语从句中,谓语动词若是am/is/are则这些系动词不能省略;而若是as 引导的定语从句,则系动词可以省略。
1.The young girl is a teacher, as (is) clear from her manner. (is可省)
2.He said he had never seen her before, which was not true. (was不省)
(四)作主语时,which 既可以作系动词be的主语也可以作实义动词的主语;而as只作系动词的主语。
1.He grows too fast, which makes him taller than his classmates.
2.Mother doesn’t like watching a comic opera, as/which is strange.
三、在下列情形中常用as不用 which
1.定语从句的谓语由实义动词的被动形式构成
As is reported/announced/expected/said/well known/declared/can be seen/As may be imagined,…
As can be seen, the old man wouldn’t receive any offer.
2.As usually happened, …
As usually happened, the village was again struck by a fierce typhoon last summer.
3.感官动词和意识类动词作定语从句的谓语时。
see, hear, notice, know, learn, realize 等作谓语时,常用as 引导定语从句。
As you realize, he hates women smoking.
4.当定语从句有“如同……那样”含义时,用as 比用which 更常见,而这些从句几乎成为固定用法。
Things will turn out contrary to one’s wishes, as is often the case. 事与愿违,这是常有的事。
非限制性定语从句which和as的用法汇总一篇
非限制性定语从句which和as的用法汇总一篇非限制性定语从句which和as的用法 1非限制性定语从句which和as的用法一、相同之处当从句位于主句之后，引导词指代整个主句所表达的全部意义时，as 和which可以互换。
如：The elephant is like a snake,as/which everybody can see.大家都看得出，这头大象像条蛇。
A big earthquake occurred there last night,as/which was reported on TV.据电视报道，昨夜那里发生了大地震。
She is from Shanghai,as/which I know from her accent.她来自上海，那是我从她的口音知道的。
二、不同之处1、as引导非限制性定语从句时，位置比较灵活，可位于主句之前，也可位于主句之中或之后;而which引导非限制定语从句只能位于主句之后，不能位于主句之前。
如：_______ is known to everybody,the moon travels round the earth.A.ItB.AsC.ThatD.Which答案：B_______ is mentioned above,the number of the students in senior highschools is increasing.A.WhichB.AsC.ThatD.It答案：BAir,as we know,is a gas.众所周知，空气是一种气体。
He is very careful,as his work shows.他的工作表现表明他非常谨慎。
as引导非限制性定语从句常有“如同.那样”的含义，因此在一些固定结构中，如：as we know;as is known to all(众所周知)as we all can see(正如我们大家都能看到的那样)as has been said before/above(正如前面所述)as might be imagined(可以想象得到)as might be expected(正如所预料的那样)as is often the case(情况通常是这样)以上种种固定搭配，一般不能用which代替as。
as 和 which 的 区别
as 和which 的区别as 和which 都可用作关系代词来引导从句，它们两个到底有什么不同呢，这是同学们经常觉得困惑的地方。
下面详细讲讲它们之间的联系和区别，希望能解开大家心中的结。
一、as, which 指代整个句子或短语。
由as, which 引导的非限定性定语从句，相当于and this或and that。
在很多时候，表示说话人对话语的看法或态度，此时它们的先行词并不是具体的某个词，而是整个句子或短语：The Chinese government has decided to develop the west of China, which, I dare say, will benefit the people there, especially those who are still leading a poor life. 中国政府决定开发西部，我敢说，这将造福于西部的人民，特别是那些至今过着贫穷生活的人。
She has married again，which delighted us.她又结婚了，这使我们很高兴。
John said he’ d been working in the office for an hour，which was true.The result of the experiment was very good，which we hadn’t expected.Carol said the work would be done by October，which personally I doubt very much.二、as, which 用在句末的时候，有些情况下可以互换使用。
He was late for school，as/which was usual with him.他上学迟到，这是家常便饭。
He was a foreigner，as/which I knew from his accent.他是个外国人，我从他的口音中得知这一点。
as和which引导定语从句的区别
as和which引导定语从句的区别as和which引导定语从句的区别导语：As 和which都可以引导非限定性定语从句，在用法上有一些区别。
欢迎阅读！1.as 和which都可以在定语从句中作主语，宾语，既可修饰一个词也可修饰前面的整个句子。
A.She accepted his proposal, as(which)was natural.她接受了她的求婚，这是自然而然的。
B.The boy is pretty handsome, as(which)we can see in our classroom.这个男孩非常的帅气，正如我们在教室看到。
2.as 在非限定性定语从句中的使用2.1 as可以放在主句之前，主句之后，也可以放在句中，可以说位置很灵活。
但是which常用在主句之后A.As we know,technology just like a engine to push the development of economics.众所周知，技术就像是引擎推动着经济的'发展。
B.The diva,as you know, is famous throughoutthe world.这个女歌剧演唱家，正如你知道的，在全世界都出名。
C.He has stood her up, which I don`t believe.他没有赴约，这事我不相信。
2.2 as与the same，such 连用时，用as。
A.This is the same phone as I have borrowed from my sister.这个手机和我向我姐姐借的一样。
B.I have never had such a chance to make a speech as I always imagined.我从没有这样一个机会去演讲，正如我一直想象的那样。
2.3在从句中谓语动词为被动语态，缺少主语时用as，不用which。
as which在定语从句中 区别
as和which引导非限制性定语从句的区别1.as引导的非限制性定语从句1)位置灵活，可以置于主句的句首、句中或句末；2)先行词不可是一个词，必须是整个主句或主句的部分内容；3)有“正如、像”等意思，表依据、评论（、态度、看法）等；如：a.This elephant is like a snake，as anybody can see．像任何人都能看见那样，这头象像条蛇。
b.He failed in the exam, as we had expected.c.Tom has passed the test, as everybody knows.正如每个人所了解的那样，汤姆通过了考试。
【比较：Bamboo is hollow，which makes it very light．竹子是空的，这就使得它很轻。
】4)常用以下谓语动词的主、被动语态：know, see, say, expect, imagine, hope, believe,announc e, suggest, report, point out…,例：a.主动（做宾）：as we all know, as you know,as everybody knows;as you see, as wecan see,as we have seen, as anybody can see; as was expected; as we canimagine,as we have imagined…a)As we all know, the earth is round.b)He was a foreigner, as I know from his accent.c)Mike, as we expected, attended the meeting．像我们所期望的那样，迈克参加了会议。
b.被动（做主）：as is known to everybody,as is known to all; as has been expected;as is often the case (with …)，as has been pointed out, as is usual with, as isreported in the newspaper…a)He is an honest man, as is known to all.b)As is often the case with young people, he was overconfident.c)He wasn't unconscious，as could be judged from his eyes．他并未失去知觉，这从他的眼神可以判断出来。
定语从句中关系代词 as, which的区别
关系代词as, which的区别
5.从句内容为否定意义时，常用which： The young lady married an old man with a lot of money， which is disgraceful（不光彩的）. 6.如从句中行为动词是含有复合宾语结构，一般 要用which作主语： Tom has made great progress, which mቤተ መጻሕፍቲ ባይዱde us happy.
定语从句中关系代词 as, which的区别
关系代词as, which的区别
1.放句首或句中引导从句，只能用as; 从句在句末，无其他限制条件时，既可用 which，也可用as。 句型模式为：as …,主语＋ 谓语； 主语， as…， 谓语； 主语＋ 谓语，as/which… 2.当从句和主句语义一致时，用as，反之则用 which: She has married again, as was expected. She has married again, which was unexpected.
关系代词as, which的区别
[备注] (1)the same ...as ...表示相似的东西 the same ...that ...表示同一人或物 This is the same knife as I lost. 这把小刀和我丢的那把一样。 This is the same knife that I lost. 这把小刀就是我丢的那一把。 （2）such ...as 像……那样(定语从句) so/such ...that 如此……以至于…… (结 果状语从句)
关系代词as, which的区别
4.固定搭配：
在引导词＋be ＋done 结构中省略be时，只能 用as： The material resists heat （耐热），as shown in the experiment. 常见固定用法as is well known, as is often the case, as often happens, as has been said before, as has been pointed out, as can be seen等常用as，意为“正如” ： The air show（航空展 ） being held in Zhuhai is fantastic, as can be seen. It never rains but pours in this area, as is often the case.
as与which的区别
as 与which 的区别关系代词as 与which引导非限制性定语从句可以用整个主句作为其先行词，指代上面或下文所说的一件事。
但何时用as，何时用which，初学者在实际运用时常出现差错。
现就as 与which在引导这种定语从句时所出现的不同词义和句法特点进行对比、分析如下。
一、as引导的从句表示说话人对话语的看法、态度、解释或评论。
一般有以下特点：1、此时的as仍具有“正如、象、由……而知、与……一致”等某些作连词时的语义。
翻译时有时可不必译出。
如：Shakespeare is a famous writer, as we all know. 莎士比亚是著名的作家，这众人皆知。
She is very patient, as is shown in her work. 她很耐心，正如她工作中所表现出来的一样。
2、在句法上，as常用作一些实意动词(如see, know, hear, watch, remember, say, tell, show, expect, guess等)的宾语，这类动词与as几乎成了一种固定搭配。
如：Einstein, as we know(=as is well known), is a famous scientist. 众所周知，爱因斯坦是一位著名的科学家。
There was a net bar around here, as I remember. 我记得这儿附近有一家网吧。
3、当从句的谓语动词是否定形式或从句谓语动词带的是一个复合宾语结构时，一般用which而不宜用as。
如：You pretended not to know me, which I didn’t understand. 他假装不认识我，我真不明白。
He admires everyone in the class, which I find quite strange. 他羡慕班里的每个学生，我认为太奇怪了。
as与which引导定语从句的用法辨析
as与which引导定语从句的用法辨析一、as和which都能引导的定语从句当非限定性定语从句置于句末时，as和which都可用来引导这个定语从句。
二、只能用which引导的定语从句1. 在限定性定语从句中。
2. “介词+关系代词”引导定语从句时，只能用which。
3. 当后置的非限定性定语从句是否定结构时，只能用which引导。
三、只能用as引导的非限定性定语从句1. 置于句首时，非限定性定语从句只能用as引导。
2. 在the same...as 结构中，意思是“像……那样的”。
3. 在as...as结构中，意思是“像……那样的”。
as作从属连词用时，可以引导五种状语从句。
现归纳如下：1. as表示“当……的时候”，引导时间状语从句，多强调主句和从句中的动作或状态同时发生，从句可放在主句前，也可放在主句后。
例如：As I waited at the stop，I heard a big noise.She rose up as he entered.2. as表示“因为”、“由于”，引导原因状语从句，其语气不如because强，通常为附加说明的理由，且是已知晓的原因，主句与从句没有逻辑上的因果关系。
例如：As she was not well, I went there alone.As he is a tailor, he knows what to do with this material.3. as表示“虽然……但是……”，引导让步状语从句，从句通常用倒装语序，把从句的表语、状语或动词原形放在as前面，可以用though替代。
例如：Child as he is, he knows a lot. Hard as it was raining，they went on working in the field.4. as表示“按照”、“依照”、“像”，引导方式状语从句，从句置于主句之后。
例如：You should do as the teacher tells you.The absence of air also explains why the stars do not seem to twinkle in space as they do from the earth.5. as表示“像……一样”，引导比较状语从句，对主句和从句的动作或状态加以比较，说明它们之间有相似之处，在从句中常省略与主句相同的部分。
as和which定语从句的区别
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as和which的区别 和 的区别
1.as既可以指前面提到过的事实或情况,因此 . 既可以指前面提到过的事实或情况 既可以指前面提到过的事实或情况, as可以放在句首,句末,也可以插入主句中,而 可以放在句首, 可以放在句首 句末,也可以插入主句中, which指前面提到的事实或情况,一般放在主句 指前面提到的事实或情况, 指前面提到的事实或情况 之后(有时也可用as), ),如 之后(有时也可用 ),如: As our teacher points out, that book is of , benefit to everyone. . Heat is a form of energy, as is known to all , of us. . This machine, as might be expected, has , , stopped operating. .
as和which的区别 和 的区别
首先,as和which都可以表示主句在意义上的 首先, 和 都可以表示主句在意义上的 连贯,在从句中作主语, 连贯,在从句中作主语,或用作及物动词的宾 语,如, her, which/ He married her, which/as was natural. . I was very useful to him, which/ as he , realized. . 但下列情况下as和 一般不能互换: 但下列情况下 和which一般不能互换: 一般不能互换
as和which的区别 和 的区别
4.下列固定结构,一般不能用 .下列固定结构,一般不能用which,如: , as has been said before 如前所述 as often happens 正像经常发生的那样 as is well known 众所周知 将如图3所示 as will be shown in Fig 3 将如图 所示 正如我们知道的那样" as we know 正如我们知道的那样" as may be imagined 这可以想象得出来 as we all can see 正如我们大家看到的那 样 as follows
which与as引导定语从句的区别 之谈
which与as引导定语从句的区别之谈常见的定语从句引导词一般为关系代词：who,whom,whose,which,that 和关系副词：when,why,where. 而作为比较另类的as用作关系代词和关系副词引导的定语从句，有时候就被大家忽略了。
众所周知，which与as都可以引导定语从句，但它们有许多用法上的区别，现就此简要分析如下：一、which与as引导非限制性定语从句的区别：1.Which只能放在主句后面，而as引导的从句位置相对较灵活，可在前，可在中，也可在后。
例如：A）As he realized, I was very useful to him.（在前）B）Air, as we know, is a gas.（在中）C）He was a foreigner, as I know from his accent.（在后）2.在which引导的定语从句中，谓语动词若是am, is, are则这些系动词不能省略；而as 后面若是这种情况，则可以省略。
例如：A）He is a teacher, as （is）clear from his manner.（is可以省略）B）He said he had never seen her before, which was not true.（was不可省略）3.当which引导的从句在意义上近乎并列关系时，可以用and this，and that代替，意思是“这件事”例如：A）He changed his mind, which（and this, and that）made me very angry.他改变了主意，这使我很生气。
B）She has married again, which（=and this, and that）was unexpected.出乎意料的是，她又结婚了。
而as主要起与上下文连接的作用，表达说话人的看法、观点，并指出主句内容的出处或根据等，例如：C）Einstein, as we know, is a famous scientist.爱因斯坦，众所周知，是位伟大的科学家。
as_which引导定语从句的区别
众所周知，which与as都可以引导定语从句，但它们有许多用法上的区别，现就此简要分析如下：一、which与as引导非限制性定语从句的区别：1．Which只能放在主句后面，而as引导的从句位置相对较灵活，可在前，可在中，也可在后。
例如：A) As he realized, I was very useful to him.(在前)B) Air, as we know, is a gas.（在中）C) He was a foreigner,as I know from his accent.(在后)2.在which引导的定语从句中，谓语动词若是am, is, are则这些系动词不能省略；而as后面若是这种情况，则可以省略。
例如：A) He is a teacher, as (is) clear from his manner.(is可以省略)B) He said he had never seen her before, which was not true.(was 不可省略)3.当which引导的从句在意义上近乎并列关系时，可以用and this，and that 代替，意思是“这件事”例如：A) He changed his mind, which(and this, and that)made me very angry.他改变了主意，这使我很生气。
B) She has married again, which(=and this, and that)was unexpected.出乎意料的是，她又结婚了。
而as主要起与上下文连接的作用，表达说话人的看法、观点，并指出主句内容的出处或根据等，例如：C）Einstein, as we know, is a famous scientist.爱因斯坦，众所周知，是位伟大的科学家。
D）As is announced in today’s newspaper, we must improve our style of work.今天的报纸上说，我们必须改进工作作风。