As 的非限制性定语从句引导词用法例

As 的用法例

1. the same… as；such…as 中的as 是一种固定结构, 和……一样……。

I have got into the same trouble as he (has).

2. as可引导非限制性从句，常带有'正如'。

例1.As we know, smoking is harmful to one's health.

例2.As is known, smoking is harmful to one's health.

As是关系代词。例1中的as作know的宾语；

例2中，它充当从句的主语，谓语动词know要用被动式。

一、“as / which” 特殊定语从句的先行成分

1. 形容词或形容词短语作先行成分, 具有形容词意义的介词短语也可以充当先行成分，如：

My grandmother’s house was always of great importance to me, as my own is.

在一定的语言环境里，有些名词可以具有形容词的性质。这些名词主要是那些表示人的身份、职业、状态的名词。值得一提的是，在这些具有形容词性质的名词之后，引导定语从句的关系代词不能用who / whom.

2. 动词短语先行成分。

这种动词短语既可是限定形式也可是非限定形式。如果是动态动词短语，它们在从句中就一般有限定或非限定形式的替代动词do和as /

which一起代替。do可以出现，也可以不出现，但不能用其它动词代替。

3. 句子作先行成分。

这句子可以是整个主句也可以只是主句中的一个从句。有时是连续几个句子，有时甚至可以是一个完整的故事。

二、“as/which”特殊定语从句在句中的位置

由于先行成分的构成成分不同，“as/which”特殊定语从句在句中的位置有以下几种情况：

1. 形容词做先行成分时：形容词或形容词短语（含具有形容词性质的名词）作先行成分，“as / which”特殊定语从句置于先行成分之后。

2. 动词短语作先行成分时：动词短语作先行成分时，“as / which”特殊定语从句置于先行成分之后。但是，当从句中含有表示主观意志的插入成分时，“as”特殊定语从句可以移至句子之首。

3. 句子作先行成分时：“as”特殊定语从句的位置较灵活，可以置于先行成分之前、之中或之后。但如果先行成分是直接引语，“as”特殊定语从句多在先行成分之前。如果先行成分是否定句，“as”特殊定语从句与否定词的相对位置不同可以使它产生不同的意义。由于“as”特殊定语从句具有这一特点，所以有时它的位置不能随便移动。在非正式的文体里，“which”特殊定语从句可以出现在先行成分之中。

三、“as/which”特殊定语从句的语义功能

一般说来，as与which的语义功能相同，可以相互替换。但先行成分为句子时，它们的语义功能则有差异。

1. 表示结果

表示结果的特殊定语从句与其先行成分之间存在着一定的因果关系，从句中往往使用有结果意义的词，如动词result, make, enable, cause和形容词interesting, surprising, delightful, disgraceful等。

2. 表示评注

表示评注的特殊定语从句对其先行成分所述事实的正确性有肯定的倾向，它通常与那些表示客观事实，普遍真理或某种习性的先行成分连用；从句中则常用一些表示“合乎自然规律”、“众所周知”或“经常发生”等意义的词语，如natural, known to all, usual等。

3. 有无状语意义

“as”特殊定语从句具有状语意义（主要是方式状语意义），而“which”特殊定语从句则无状语意义。“as”特殊定语从句的状语意义要求它在语义上与其先行成分的语义保持一致，“which”特殊定语从句则不受这种限制。

四、关系代词as与which的句法功能

1. as / which 在特殊定语从句中作主语。

as作主语时，谓语动词常为连系动词（主要是be, seem），主语补语为usual、a rule、a matter of fact等时，系动词be习惯经常省略。行为动词作“as”特殊定语从句的谓语时一般用于被动语态（其中助动词be常略），不及物的行为动词在“as”特殊定语从句中作谓语的极少，常见的有happen一词。如：

Freddie, as might be expected, was attending the conference.

Which作主语时，谓语动词不限，主语被动皆可，只是谓语动词为被动语态时助动词be省略。

2. as和which都可以在特殊定语从句中宾语。

3. as和which在特殊定语从句中作补语。如：

We thought him a gentleman, as/which he could never be.

“as”特殊定语从句中可以主谓倒装，“which”从句中则不能主谓倒装。

如果先行成分不是主语补语或宾语补语，关系代词用which而不用as。如：

He talked like a native, which/as he hardly was.

4. which在特殊从定语句中作定语。

which可以在特殊定语从句中作定语，修饰fact, matter, thing 等名词。这些名词代表先行成分表达的意义，有时将其略去句义仍然完整。as不能作定语。如：

I was told to go not by train but bus, which advice I followed.

限制性定语从句与非限制性定语从句

限制性定语从句与非限制性定语从句 2．关系代词which与as引导非限制性定语从句的区别。（1）which与as都可以引导非限制性定语从句，which引导定语从句要置于先行词后面，而as引导的定语从句位置相对灵活，可放在句首，也可以放在句后 eg.正像他所意识到的那样，我对他非常有用 As he realized, I was very useful to him. 空气，众所周知，是一种气体 Air, as we know, is a gas. 他是个外国人，正像我从他口音判断的那样。 He was a foreigner, as I know form his accent. 他又来晚了，这一点使老板很生气 He came late again, which made his boss angry. (2)当定语从句位于主句后面，纯粹表示主句所述的内容，往往用which；当定语从句中有“如同……那样”的含义时，用as比用which更常见。 Eg.妈妈老把我当成小孩对待，让我无法忍受 Mummy always treats me just like a baby, which I can’t bear. 事与愿违，这是常有的事 Things will turn out contrary to on e’s wishes, as is often the case. (3)“介词+关系代词”结构的定语从句，必须用which,不能用as. Eg.我们周围有很多氧气，没有他们我们无法生存 There is a great deal of oxygen around us, without which we could not live. 3．引导限制性定语从句时which与as的区别定语从句前面有such, as, the same 时，引导定语从句的关系代词用as,不用which. Eg 所需要的字典有许多都有了

as引导的非限制性定语从句

as引导的非限制性定语从句： 1： as引导限定性定语从句，常用于以下句式，其中关系代词在从句中担当主，宾，表语： ①so/as/such+名词+as…像……一样的，像……之类 : We have found such materials as are used in their factory. These houses are sold at such a low price as people expected. This book is not such as I expect. Such things as you described are rare now. He isn’t such a man as you described. He is such a lazy man as nobody wants to work with =he is such a lazy man that nobody wants to work with him. I want to have such a dictionary as he has. I have bought such a watch as was advertised on TV. Mount Wuyi is such an attractive place of interest as everyone likes to visit. Such money as he earned was spent on spirits and tobacco. He was not half such a coward as we took him for. ②the same +名词+as 和…同样的 He is not the same man as he was /used to be. The west is not the same as it was 20 years ago. I like the same book as you do . I shall do it in the same way as you did. This is the same pen as I lost yesterday. Is this the same mosquito as bit you just now? 2: as引导的非限定性定语从句，指代整个主句的内容，但不同于which的是，它引导的定语从句既可以位于主句的前面，也可以位于主句的后面。它的意思是“正如”，在这些从句中as作主语或宾语。经常使用的短语又： as(it) seems likely, as (it) often happens, as (it) was printed out, as (it) was said earlier, as I remember (it), as I unde rstand (it), as (it) appears, as is known, as is said, as is reported, as announced, as we had expected, as everybody c an see, as is mentioned above. 如： As we all know, china is a developing country.. (在句首只能使 as) As is known to all, he is the best student in our class. As was expected, he failed in the exam. As anybody can see, they were telling a lie. The girl married a rich man, as is natural. As is often the case, my mother has the final say in the argument. ______ I explained on the phone, your request will be considered at the next meeting. (2005年浙江卷) A. When B. After C. As D. Since ______ is reported in the newspapers, talks between the countries are making progress. (2004年北京卷) A. It B. As C. That D. What ______ is often the case, we have worked out the production plan. A. Which B. When C. What D. As As is known to us all, the 2008 Olympic Games will take place in Beijing. As is known to everybody, Taiwan is a part of china. We must unify it. The weather turned out to be very good, which was more than we could expect. As is known to everybody, the moon travels round the earth once everyone =the moon travels round the earth once every month, as/which is known to everyone.

as引导定语从句的用法

as引导定语从句的用法 as 引导非限制性定语从句，可放在主句之前，或者主句之后，甚至可以切割一个主句；which 引导的非限制性定语从句只能放在主句之后。另外，as有“正如……，正像……”的意思 (1) As is known to all, China is a developing country. (2) He is from the south, as we can see from his accent. (3) John, as you know, is a famous writer. (4) He has been to Paris more than several times, which I don’t believe. ================================ As 的用法例 1. the same…as；such…as 中的as 是一种固定结构, 和……一样……。 I have got into the same trouble as he (has). 例2. as可引导非限制性从句，常带有'正如'。 As we know, smoking is harmful to one's health. As is known, smoking is harmful to one's health. As是关系代词。例1中的as作know的宾语；例2中，它充当从句的主语，谓语动词know要用被动式。一、“as / which”特殊定语从句的先行成分 1. 形容词或形容词短语作先行成分, 具有形容词意义的介词短语也可以充当先行成分，如： My grandmother’s house was a lways of great importance to me, as my own is. 在一定的语言环境里，有些名词可以具有形容词的性质。这些名词主要是那些表示人的身份、职业、状态的名词。值得一提的是，在这些具有形容词性质的名词之后，引导定语从句的关系代词不能用who / whom. 2. 动词短语先行成分。这种动词短语既可是限定形式也可是非限定形式。如果是动态动词短语，它们在从句中就一般有限定或非限定形式的替代动词do和as / which一起代替。do可以出现，也可以不出现，但不能用其它动词代替。 3. 句子作先行成分。这句子可以是整个主句也可以只是主句中的一个从句。有时是连续几个句子，有时甚至可以是一个完整的故事。二、“as/which”特殊定语从句在句中的位置由于先行成分的构成成分不同，“as/which”特殊定语从句在句中的位置有以下几种情况：1. 形容词做先行成分时：形容词或形容词短语（含具有形容词性质的名词）作先行成分，“as / which”特殊定语从句置于先行成分之后。 2. 动词短语作先行成分时：动词短语作先行成分时，“as / which”特殊定语从句置于先行成分之后。但是，当从句中含有表示主观意志的插入成分时，“as”特殊定语从句可以移至句子之首。 3. 句子作先行成分时：“as”特殊定语从句的位置较灵活，可以置于先行成分之前、之中或之后。但如果先行成分是直接引语，“as”特殊定语从句多在先行成分之前。如果先行成分是否定句，“as”特殊定语从句与否定词的相对位置不同可以使它产生不同的意义。由于“as”特殊定语从句具有这一特点，所以有时它的位置不能随便移动。在非正式的文体里，“which”特殊定语从句可以出现在先行成分之中。

as 引导定语从句, 在定语从句中作主语、宾语、表语

as的用法: (as引导定语从句,在定语从句中作主语、宾语、表语) (1)如为限制性的，多用于the same …as ; the same as；such …as …; as many/muchas；so …as等结构中。如： 1. I have the same book as you (have).我有一本和你的一样的书。 Her attitude to him was quite the same as it had always been. (关系代词as和指示代词same连用,在从句中用作表语,先行词是same.) 2.---Why didn't you mention that in face of the police just now? --- I thought it was such a minor detail as was hardly worth mentioning. We will only discuss such problems as have something to do with our own interests.Don't do such things as you are not sure about. There is no such place as you dream of in all this world. 比较： I live in the same house that he used to live in. I'm wearing the same shirt as you wore yesterday. 比较： Here is so big a stone as no one can lift.（定语从句） Here is so big a stone that no one can lift it.（结果状语从句） (2)如为非限制性的，多单独引导一个定语从句，这种定语从句可置于句首，句中或句尾，译为"正如，这一点"。（动词常为know, see, expect, point out, etc.） 1. As we all know, smoking is harmful to one's health . (as作宾语) =As is known to all, smoking is harmful to one's health .（as作主语）

限制性非限制性定语从句详解+练习(附答案)

定语从句用来说明主句中某一名词或代词（有时也可说明整个主句或主句中一部分）而起定语作用的句子叫作定语从句。一．词引导的定语从句 1. 关系代词用来指代先行词是人或物的名词或代词句子成分用于限制从句或非限制性从句只用于限制性从句代替人代替物代替人或物主语 Who which that 主语 Whom which that 宾语 Whose(=of whom) whose(=of which) 例1：This is the detective who came from London. 例2：The book which I am reading is written by Tomas Hardy. 例3：The desk whose leg is broken is very old. 例4：This is the room that Shakespeare was born in. 2．关系代词的用法 (1) 如果先行词是all, much, anything, something, nothing, everything, little, none等不定代词，关系代词一般只用that，不用which。例如： All the people that are present burst into tears. (2) 如果先等词被形容词最高级以及first, last, any, only, few, much, no, some, very等词修饰，关系代词常用that,不用which, who，或whom。例如： (3) 非限制性定语从句中，不能用关系代词that,作宾语用的关系代词也不能省略。例如：

(完整版)限制性定语从句与非限制性定语从句的六点区别

限制性定语从句与非限制性定语从句的六点区别区别一：形式不同限定性定语从句主句和从句之间不用逗号隔开，口语中使用时也不停顿；而非限定性定语从句与主句之间通常有逗号隔开，口语中使用时有停顿。区别二：功能不同限定性定语从句用于对先行词的意义进行修饰、限制和识别，如果去掉，就会造成句意不完整或概念不清；而非限定性定语从句用于对先行词起补充说明作用，如果省略，句意仍然清楚、完整。如： People who take physical exercise live longer. 进行体育锻炼的人活得长些。(若把从句去掉句子就失去意义) His daughter, who is in Boston now, is coming home next week. 他女儿现在在波士顿，下星期回来。(若把从句去句子意义仍然完整) 区别三：翻译不同在翻译定语从句时，一般把限定性定语从句翻译在它所修饰的先行词之前，而把非限定性定语从句与主句分开。如： He is the man whose car was stolen. 他就是汽车被窃的那个人。 I’ve invited Jim, who lives in the next flat. 我邀请了吉姆，他就住在隔壁。区别四：含义不同比较下面的两个句子： I have a sister who is a doctor. 我有一个医生的姐姐。(姐姐不止一个) I have a sister, who is a doctor. 我有一个姐姐，她是当医生的。(只有一个姐姐) 区别五：先行词不同限定性定语从句的先行词只能是名词或代词，而非限定性定语从句的先行词则可以是名词或代词，也可以是短语或句子；另外，当先行词为专有名词或其他具有独一无二性的普通名词时，通常要用非限制性定语从句，而不用限制性定语从句。如： Peter drove too fast, which was dangerous. 彼得开车很快，这是很危险的。(which指drive too fast) He changed his mind, which made me very angry. 他改变了主意，这使我很生气。(which 指整个主句)

which在非限制性定语从句的用法

非限定性定语从句起补充说明作用，缺少也不会影响全句的理解，在非限定性定语从句的前面往往有逗号隔开，如若定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，将非限定性定语从句放在句子中间，其前后都需要用逗号隔开。 which引导的非限制性定语从句。关系代词which在非限制性定语从句中所指代和修饰的可以是主句中的名词、形容词、短语、其他从句或整个主句，在从句中作主语、动词宾语、介词宾语或表语。 ① which指代主句中的名词，被指代的名词包括表示物、婴儿或动物的名词、表示单数意义的集体名词以及表示职业、品格等的名词。如：These apple trees，which I planted three years ago，have not borne any fruit. 这些苹果树是我三年前栽的，还没有结过果实。 She is an artist，which I am not. 她是一位艺术家，而我不是。 Water，which is a clear liquid，has many uses. 水是一种清澈的液体，有许多用途。 The two policemen were completely trusted，which in fact they were. 那两个警察完全受到信任，事实上，也真是如此。 ② which指代主句中的形容词。如：She was very patient towards the children，which her husband seldom was. 她对孩子们很耐心，她丈夫却很少这样。 She is always careless，which we should not be. 她总是马虎大意，我们可不应该这样。

非限制性定语从句的引导词

、先行词指人,在句中作主语who: John,who is only five,has an inborn talent for music. (约翰是一外5岁大的孩子,有着天生的音乐才能。) 2、先行词指人,在句中作宾语whom: His wife,whom you met at my home,was a teacher. (他的妻子，就是你在我家遇见的那个，是一位老师。) 3、先行词指物,在句中作主语或宾语which: Her house,which was built a hundred years ago,stood still in the earthquake.(那座房子在地震中依然耸立，它是一百多年前建造的。) 注意：无论先行词指人或者指物,在句中作主语或者作宾语，非限制性定语从句的引导词都不能用that。 4、先行词在句中作定语，无论指人或者指物,引导词都用whose: The girl,whose name is Kate,is the top of the students in our school.(那个女孩是我们学校最优秀的学生，她的名字叫Kate。) The book,whose cover is red,is mine.(封面是红色的那本书是我的。) 5、先行词指物，在句中作时间状语用when： The sports meeting will be put off till next month,when we will have made all the preparations.(运动会将被推迟到下个月，那时我们做好一切准备。) 6、The next day we arrived in New York,where we were inerviewed on the radio.（第二天我们到达纽约，在那里我们接受了电台的采访。） 7、如果先行词作介词的宾语，先行词指人，介词提前的结构是：介词＋whom；先行词指物，介词提前的结构是：介词＋which: President Wilson,with whom he had not the same intimate relations,is treated much less sympathetically.(威尔逊总统与他没有同样的亲密关系，所以就没有被很同情地对待。) The Second World War,in which millions of people were killed,ended in 1945.(第二次世界大战造成数百万人的死亡，于1945年结束。) 8、as也可以引导定语从句，常与such连用： Such people as you describe are rare nowadays.(象你所描绘的那种人现在已经很少见了。) Let's disscuss only such questions as concern us.(让我们只讨论那些和我们有关的问题吧。) 注意：the same that+从句，意思是：正是那一个人或物；the same as+从句，意思是：就像某个人或物： He is the same man that you are looking for.(他就是你要找的那个人。) He is the same man as you met in the street.(他很象你昨天在街上遇见的那个人。实际上并不是那个人。) This is the same pen that I lost yesterday.(这就是我昨天丢失的那支笔。) This is the same pen as I lost yesterday.(这很像昨天我丢失的那支笔。)

as和which引导非限制性定语从句的区别

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龙源期刊网 https://www.360docs.net/doc/b513077233.html, 非限制性定语从句中的关系代词which和as用法辨析作者：邵玉金来源：《新高考·高三英语》2013年第03期请看下面两道题： ① He has won the game， was expected. ② He has won the game， was unexpected. A. that B. which C. it D. as 以上两题选项中均含有关系代词which和as，该选哪一个呢？现就以下几个方面来谈一谈它们的区别（本文所谈的which和as是指引导非限制性定语从句中的关系代词which和as）。一、位置关系：关系代词which不能放在句首；关系代词as 既可以放在句首也可以放在句末，甚至还可以放在句中。 1. As is known to all， he studies very hard.（不可用which） 2. New concept English is intended for foreign students， which is known to all of us.（which 不可放在句首，这里也可以用as） 3. He， as you know， is clever. 二、内涵关系：as有“正如”、“就像”之意，即主从句意义一致；which 则没有此意。 He is a foreigner from North America， as I know from his accent. （as表示“正如”之意） Tom is so busy that he has to work at weekends，which he doesn’t like. 三、先后关系：as引导的多为经常性行为，或先于主句发生的动作；which引导的多表示发生在主句之后的行为。

非限制性定语从句讲解及8大考点知识讲解

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As引导各种从句归纳

As引导的从句一、As引导让步状语从句为了帮助同学们全面掌握让步状语从句的倒装用法，本文将这类语法现象归纳为以下五种句型： 1、名词+ as / though +主语+动词 King as he was，he was unhappy. 他虽是国王，但他并不幸福。 Child as he is，he knows to help other. 他虽是个孩子，却知道帮助别人。【说明】其中的动词通常为连系动词，也就是说位于句首的名词是其后连系动词的表语。另外，要特别注意位于句首的名词前习惯上不用冠词，即使其前有形容词修饰也不用冠词。比较： Boy as ［though］he is，he likes to play with girls.=Though he is a boy，he likes to play with girls. 他虽是男孩，却喜欢与女孩子玩。 Strong man as ［though］he is，General Botha has been severely put to the test during the

past few weeks.= Though he is a strong man，General Botha has been severely put to the test during the past few weeks. 波赛将军虽然坚强，但在过去的数周里也受到了严峻的考验。 2、形容词+ as / though + 主语+ 动词 Successful as he is，he is not proud. 他虽然成功，但不骄傲。 Improbable as it seems，it’s true. 虽然看起来不太可能，但却是真的。 Stupid as it sounds，I was so in love with her that I believed her. 尽管听起来很愚蠢，我是如此爱她竟然相信了她的话。 Patient as he was，he didn’t like waiting that long. 他虽说有耐心，也不愿等这么长。 Beautiful though the necklace was，we thought it was over-priced. 那条项链虽然很漂亮，我们认为价钱太高。

非限制性定语从句用法

非限制性定语从句用法一．关系代词Who、Whom、Which、As、Whose Who指人，在从句中充当主语Whom在从句中充当宾语 1.Lintao, who is our monitor, was praised by our teacher.(主语) 2.Peter, whom you met in Paris, has arrived back from vacation. (宾语) Which 代指主句中的一个词或某一部分或整个句子 1.The apple trees, which I planted, hasn’t produced any fruit. （一个词、宾语） 2.I am taking some weight-loss pills, which are quite popular here. （一个词、主语） 3.He said that we had never seen her before, which was not true.（一个部分） 4.Jone passed the exam, which made his parents very happy.（整个句子）Whose 代指定语（名词所有格或形容词性物主代词） 1.My cousin, whose body is slim, took part in the activities. 2.Daniel, whose brother I share a room with, has gone abroad. 二．关系副词when、where Where在从句中充当地点状语 1.The toy is in the drawer, where I often keep them. 2.The story happened in Hunan, where Chairman Mao was born. When在从句中充当时间状语 1.I left on Sunday, when everyone was at home. 2.We will set off next month, when he feels better.