as和which引导非限制性定语从句的区别
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, announce, suggest,report, point out…, 例：a.主动（做宾）：as we all know, as you know, as everybody knows; as you see, as we can see, as we haveseen, as anybody can see; as was expected; as we can imagine, 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 is reported 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。
2.which引导非限制性定语从句1)只能置于句中或句末（即不可置于句首，只能置于先行词之后）；2)先行词即可是一个词，也可是整个主句或主句的部分内容；是整个主句时，从句谓语动词用三单。
a.He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。
b.Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。
c.He studied hard at school when he was young, which leads to his success in his later life.3)有“这、这一点”等意思，表事实、状态、起因、转折、让步等；如：a.Bamboo is hollow，which makes it very light．竹子是空的，这就使得它很轻。
b.Her house, which was built a hundred years ago, stood still in the earthquake. 她的房子尽管是一百多年前建造的，但他在地震过后依然耸立。
（让步）【比较：He failed in the exam, as we had expected.】c.He was late again, which made his teacher very angry. (先行词是一个句子)d.He was proud, which I dislike very much.e.He was proud, which his brother never was.f.She was very patient towards the children, which her husband seldom was.g.She was awarded a gold medal, which the whole family considered a great honour.4)常用“prep.＋which”结构a.They arrived at a farmhouse, in front of which sat a small boy.b.He is a library assistant, from whom I borrowed some books.c.It is a famous school, from which he graduated 3 years ago.d.He is my son, against whom a better son does not exist．e.He stood at the window, from which (/ where) he could see what was happening.f.There is a tall tree outside, under which (/where) stands our teacher.5)用“n./pron./num./adj比较或最高级+ prep.+ which/whom”结构，表示先行词的一部分a.They talked about a movie, the name of which I've never forgotten．他们谈论过一部电影，我决不会忘记片名。
b.He paid the boy $10 for washing ten windows, most of which hadn't been cleaned for at least a year.c.In Sydney the Chinese team got 28 gold medals，16.5 of which were won by women．在悉尼奥运会，中国队夺得了28枚金牌，其中16．5枚是女子夺得的。
d.China has a lot of rivers, the second longest of which is the Yellow River.e.China has thousands of islands，the largest of which is Taiwan．中国有数千个岛屿，其中最大的是台湾岛。
6)先行词是独一无二的事物或是专有名词时。
a.The moon，which doesn't give out light itself，is only a satellite of the earth．月球本身不发光，它只是地球的一个卫星。
b.Charles Smith, who was my former teacher, retired last year. 查理去年退休了，他曾经是我的老师。
c.Mr. Zhang, who came to see me yesterday, is an old friend of mine.d.Beijing, which has been China's capital for more than 800 years, is rich in cultural and historic relics. 北京是中国八百年之久的古都,它有着丰富的文化和历史遗产。
e.The Nile，which used to flood every year，now runs more regularly below the dam．尼罗河年年涨洪水，现在比较正常地在大坝下面流过了。
st year he went to Egypt，which is in Africa．他去年去了埃及，埃及在非洲。
g.We'll graduate in July, when we will be free. 我们将于七月份毕业，到那时我们就自由了。
7)先行词被物主代词和指示代词修饰时a.My house, which I bought last year, has got a lovely garden. 我去年买的的那幢房子带着个漂亮的花园。
b.My family，which has 35 people，is a large one．我家有35口人，是一个大家庭。
c.This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。
8)先行词是表人的职业、品质、身份等名词，作定语从句的表语，主从句之间含对比的意思。
a.Mike's brother is a policeman，which he isn't．迈克的哥哥是警察，他可不是。
b.Her sister has become a lawyer, which she wanted to be. 她的妹妹成为了一名律师，而这是她曾经的愿望。
9)在否定意义的非限制性定语从句里（即否定意义的非限制性定语从句不可用as引导。
）a.Tom has passed the test, which nobody knows. 汤姆通过了考试，但却没人知道。
b.He came to my birthday party，which I didn't expect at all．他来参加我的生日聚会了，这我完全没有想到。
c.Li Ling is very clever，which Li Long isn't．李玲很聪明，李珑可不是。
d.He married her, which was unexpected.3.1)非限定从中的as表依据评论，which表事实状态等，但差别不大时可互换。
which与as引导非限制性定语从句的异同
which与as引导非限制性定语从句的异同which与as一样,都可以引导非限制性定语从句,它们既有相同之处,也有差别。
因此在实际运用中容易混淆。
它们的某些用法在高考中也会考查。
一.相同点。
两者引导非限制性定语从句时,可指代主句中的部分或整个句子的内容,在从句中做主语,宾语或表语,位于主句之后有时可互换。
The meeting was put off, as /which was exactly what we wanted.He was a doctor, as/which I knew from his manner.二.不同点1. as可指其前后主句提到的事实或情况,因此引导的非限制性从句位置比较灵活,which可以放在主句前后,也可插入主句之中;而which 引导的非限制性从句只能位于主句之后。
As is known to all, fish can’t live without water.Air, as we know, is gas.2.在非限制性从句中,which后的be动词不可省;as而后的be动词可以省略。
She told me she won the match , which was a lie.The material is elastic, as (was) shown in the figure.3. which在非限制性定语从句做主语时可用各类动词做谓语;而在非限制性定语从句做主语时,谓语常用连系动词,如be, seem, become 等,一般不用其他行为动词。
He saw the girl, which delighted him.He didn’t say anything at the m eeting , as/which seemed very strange. 4. 如果主句中叙述的事情与从句所涉及的意向一致,多用as,用以对主句的意义进行补充;如果不一致,就用whichShe has married again, as was expected.He broke the rules again, which was unexpected.5.如表示“如同。
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引导定语从句与which
as引导定语从句与whichas引导定语从句与whichas引导定语从句与which关系代词as与which引导的非限制性定语从句，其先行词都可以是整个主句，指代主句的整个意思。
但as和which具有不同的词义、句法和用法。
1. as引导的从句表示说话人的看法、态度、解释或评论引导定语从句时，as仍具有正如，像，由可知等意思，翻译时有时可不必译出。
as定语从句常含有这些动词：see, know, hear, watch, remember, say, tell, show, expect, guess等，这类动词与as连用几乎成了一种固定搭配。
as引导的此类从句可以置于句首、句中或句尾。
如：The famous magician Liu Qian, as we all know, is from Taiwan. 众所周知，著名魔术师刘谦是台湾人。
There is a net bar around here, as I remember. 我记得这儿附近有一家网吧。
As is often the case, girls like dolls while boys like guns. 女孩子喜欢玩具而男孩子喜欢枪，这是常见的情况。
2. which引导的从句对主句所叙述的`事情进行补充说明，表明事物的状态或结果which此时指前面主句所提到的这件事，常译为这一点，这件事等。
这时它所引导的从句与主句之间常含有并列、因果关系。
注意，它引导的从句不像as那样位置灵活，它只能位于主句的后面。
练习题：1）Alice received an invitation from her boss, ___came as a surprise.A. itB. thatC. whichD. he答案C. 此为非限定性从句，不能用 that修饰，而用which.，it 和he 都使后句成为句子，两个独立的句子不能单以逗号连接。
as和which引导非限制性定语从句的区别
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，位置灵活，可以置于主句的句首、句中或句末；先行词不可是一个词，必须是整个主句或主句的部分内容；有“正如、像”等意思，表依据、评论（、态度、看法）等；如：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。
He failed in the exam, as we had expected.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。
】常用以下谓语动词的主、被动语态：know, see, say, expect, imagine, hope, believe, announce, suggest, report, point out…, 例：主动（做宾）：as we all know, as you know, as everybody knows; as you see, as we can see, as we have seen, as anybody can see; as was expected; as we can imagine, as we have imagined…As we all know, the earth is round.He was a foreigner, as I know from his accent.Mike, as we expected, attended the meeting．像我们所期望的那样，迈克参加了会议。
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 is reported in the newspaper…He is an honest man, as is known to all.As is often the case with young people, he was overconfident.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。
英语as与which引导非限制性定语从句之区别
英语as与which引导非限制性定语从句之区别：练习题。
这类定语从句只能由which或as引导。
两者之间的区别在于：1. which引导的定语从句只能位于主句后，但as引导的从句可位于主句前、中、后。
如：David, as you know, is a photograopher. (不可用which)Li Ming is late, as is often the case. (不可用which)2. as在定语从句中作主语时，从句谓语通常要有be或别的系动词，但which不受此限制。
如：Li Ming was late, which (=and this) made Mr. Zhang very angry. (不可用as)3. as引导的定语从句只表示一个众所周知或意料之中的事，但which不受此限制。
如：He married her, which was unexpected. 他和她结婚了，这是出乎意料的。
(不可用as)4. as有“正如”之意，而which则意为“这(件事，一点)”，可用and this/that/it来代替。
5. as多用于固定搭配中：as is often the case(这是常有的事)，as was expected(不出所料)，as often happens(正如经常发生的那样)，as is known to all(众所周知)，as has been said before(如上所述)，as is mentioned above(正如上面所提到的)等。
注：which代表整个句子，还可用于in which case, at which point, on which occasion 等。
如：I may have to work late, in which case I’ll telephone you.As的高考知识点归纳1．as做关系代词，引导非限制性定语从句2．as引导非限制性定语从句时，指代逗号前的整个句子（即先行词），常翻译为“正如，正像”，可置于句首或句末。
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。
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。
谈as和which引导非限制性定语从句时的用法区别
谈as和which引导非限制性定语从句时的用法区别2.As we know, heavy objects and light objects fall at the same speed unless air holds them back.3.As we have seen, oceans cover more than 70 percent of the earth.4.They (The stems of bamboo) are hollow, which makes them very light.5.They won, which meant they would run for the United States.6.A certain scientist had discovered that a metal called uranium gave off a kind of radiation, which Marie Curie was later to call radioactivity.上例1—3句中的“as”都是关系代词，引导非限制性从句，其所指代的先行项是整个主句（即划线部分）。
同样，例4和例5中的“which”也是关系代词，引导非限制性定语从句，“which” 的先行项也是整个主句（划线部分）。
例6中的“which”所指代的先行项是“that”引导的整个宾语从句（划线部分）。
因此，一些学生常问此时的“as”和“which” 是否可以互换使用，在实际使用中应如何选择。
as和which在引导非限制性定语从句中时，其用法有三点相同和四点不同之处。
一、相同点：1. “Which”和“as” 都可在SVC（主语+系动词+表语）或SV（主语+谓语）结构的非限制性定语从句中作主语，此时两者可互换使用。
例如：He said he had lost the book, which/as was true.He failed in the examination, which/as seemed natural.The ships were frozen in, which/as often happens in this region.2. 在SVC结构的非限制性定语从句中，which和as 作表语时可互换使用。