关系代词as与which的用法区别
as在定语从句中的用法
as在定语从句中的用法as在定语从句中的用法下面就是店铺为您收集整理的as在定语从句中的用法的相关文章，希望可以帮到您，如果你觉得不错的话可以分享给更多小伙伴哦！篇一：as在定语从句中的详细用法(1) as引导的定语从句修饰表人或物的先行词，即先行词可以是人也可以是物；在定语从句中可以做主语、宾语或表语；常用于the sameas/suchas/as(so)as句型，as不论在定语从句中作何成分，均不能省略。
① 先行词为人such teachers， as作主语②I’ll buy the same bike as I lost yesterday. 先行词为物the same bike，as作宾语 ,指同一类事物※此时注意和the same that 引导的定语从句的区别It’ that引导定语从句，作宾语，指同一个事物※ She wore the same dress that she wore at Mar y's wedding. (the samethat特指同一个) 她穿着她在Mary婚礼上穿过的同一条裙子。
(the sameas 泛指同一类) 她穿着和她妹妹所穿的一样的裙子。
那块手表和我丢失的一模一样。
(the sameas 泛指同一类) 那就是我丢失的那块手表。
(the samethat特指同一个) ③The school is just the same one as it was 10 years ago.先行词为物the same one (school), as作表语It’ 先行词为物so heavy a box，as作宾语此时应注意as引导的定语从句和结果状语从句such / sothat的区分It’ 结果状语从句sothat如此以至于※He is such a good student as is liked by everyone.(定语从句，as在从句中作主语) （结果状语从句suchthat） that在从句中不充当任何成分，故不是定语从句，而是结果状语从句(2) as引导的非限制性定语从句可以修饰整个主句, 可以放在主句前，主句后或插入主句中间。
as 引导的定语从句
He is reading thesamebookthatI read yesterday.
他正在读我昨天读的那本书。，
such (+n.) +as…
such as…
Suchpeopleasknew Mary admired her.认识玛丽的人都钦佩她。
He is notsucha foolashe looks.他并不想看起来那样傻。
夜晚变得冷，在这一带通常如此。
Water is boiling at100°C,asis shown in the figure.如图所示，水在100°C时沸腾。
1.which即可指代整个主句又可指代主句中的一部份。
2.引导表示具体的内容
3.从句只在主句之后。
He changed his mind at the last moment,whichmade him angry.
他抽一种他买的起的最贵的香烟。
2.as与which引导的非限制定语从句的区别
as从句
例句
which从句
例句
1.as只指代整个主句。
2.引导从句时表示“正如”，没有具体的内容
3.从句的位置
很灵活
Air,asis well-known, is a gas.
众所周知，空气是气体。
The night has turned cold,asis usual around here.
他在最后一刻改变了主意，这是我很生气。
I called him by the wrong name, forwhichmistake I apologize.
我叫错了他的名字，对此我表示道歉。
3.as引导的非限制性定语从句常常成为一些惯用句型。
as, which 非限定性定语从句的用法
as, which 非限定性定语从句的用法以下是小编给大家整理的as, which 非限定性定语从句的用法，希望可以帮到大家由as, which 引导的非限定性定语从句，as和which可代整个主句，相当于and this或and that。
As一般放在句首，which在句中。
As we know, smoking is harmful to one's health.The sun heats the earth, which is very important to us.典型例题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。
况且选he句意不通。
2)The weather turned out to be very good, ___ was more than we could expect.A. whatB. whichC. thatD. it答案B。
which可代替句子，用于非限定性定语从句，而what不可。
That 不能用于非限定性定语从句，it不为连词，使由逗号连接的两个句子并在一起在英语语法上行不通。
3)It rained hard yesterday, ____ prevented me from going to the park..A. thatB. whichC. asD. it答案B.as 和which在引导非限制性定语从句时，这两个关系代词都指主句所表达的整个意思，且在定语从句中都可以作主语和宾语。
但不同之处主要有两点：(1) as 引导的定语从句可置于句首，而which不可。
(2) as 代表前面的整个主句并在从句中作主语时，从句中的谓语必须是系动词;若为行为动词，则从句中的关系代词只能用which.。
【讲解】高中英语--定语从句专题讲解(详细)
定语从句
知识导图
引入
Mary is a girl who is happy.
概念
定语从句：在复合句中起形容词作用，作定语，修饰名词或代词的从句叫定语从句。
先行词：被定语从句修饰的词叫先行词。
关系词：连接先行词和从句的词叫关系词。
注意：
关系词指代先行词，并在句子起连接作用，连接主句和从句，同时又在定语从句中充当成分（主、宾、表、状等）关系词根据其在从句中所充当的成分可以分为：
关系代词：在从句中做主、宾、表、定（that/which/who/whom/whose/as）
关系副词：在从句中作状语(When/where/why)
关系代词和关系副词用法
先行词关系代词从句中的成分例句备注
人who 主、宾、表This is the doctor who saved the boy’s life.
这就是救了孩子生命的医生。
who在从句中做主语
whom在从句中做宾语，
口语中who可以代替whom，也可以被省去，。
定语从句关系词的用法
定语从句关系词的用法定语从句关系词的用法定语从句关系词怎么用？下面是店铺为大家收集整理的定语从句关系词的用法相关内容，欢迎阅读。
一、关系代词引导的定语从句1、that 指人或物在从句中作主语，宾语或表语which 指物在从句中作主语，宾语或表语（作宾语时可以省略）who 指人在从句中作主语，宾语或表语whom 指人在从句中作宾语whose 指人或物在从句中作定语as 指人或物在从句中作主语，宾语或表语but 指人或物在从句中作主语，宾语或表语注意：指物时，whose+名词=the+名词+of which或of which+the+名词2、as 的用法（1）常用于下列结构：such…as; so…as;the same…as; as…as注意：the same…as 表示同一类，不同一个the same…that 表示同一个（2）as与which的区别a、位置不同as可放在主句后，主句前或主句中间；which只能放在主句后。
b、as起连接作用，表达说话人的观点、看法，并指出主句内容的根据或出处，意为“正如，正像”。
Which相当于并列句，可以用and this来代替，意为“这一点，这件事’”。
注意：as常用于下列结构：as we know/ as is known to all, as we all can see, as has been said before/above,as might be excepted, as is often the case, 一般不能用which 代替as。
c、在从句中作主语时，which既可作系动词be的主语也可作实义动词的主语，而as只可作系动词be的主语。
3、but用作关系代词，相当于who/that…not例：In China there is no one but knows Lei Feng.二、只用that不用which的情况1、.先行词为all , much, everything, nothing , something ,anything, nothing, none, the one等不定代词时2、先行词被only, any, few, little, no , all, just , very ,right等修饰时.3、当先行词是最高级或被形容词最高级修饰时。
定语从句中as的用法
定语从句中as的用法定语从句中as的用法在定语从句中，as有样的作用呢?下面是店铺为大家带来的定语从句中as的用法!1. 准关系代词as引导限制定语从句，用于以下3个结构中，as在从句中作主语、宾语或表语：a. so / such…asSuch people as were mentioned by him were honest. (as作主语)I’ve never seen such a clever man as he is. (as作表语)Last term our maths teacher set so difficult an (= such a difficult) examination problem as none of us worked out.b. the same…asModern statemen are often faced with the same problem as defeated the ancient Romans. (as 作宾语)I like the same book as you do. (as 作宾语)c. as…asAs many children as came were given some cakes. (as 作主语) He is as diligent a man as ever lived. (as 作主语)补充：a. such…as 与such…that的区别such…as 引导定语从句;such…that引导结果状语从句。
They talked in such simple English as children could understand.他们用孩子们能听懂的简单的交谈。
They talked in such simple English that children could understand it.他们用十分简单的英语交谈，连孩子们都能听懂。
高中英语语法知识总结：定语从句
高中英语语法知识总结：定语从句下面就是小编给大家带来的高中英语语法知识总结：定语从句，希望能帮助到大家!高中英语语法知识总结：定语从句易错点1 关系代词与关系副词的混用1.定语从句相当于一个形容词，起定词作用，修饰名词或代词2.定语从句的引导词的三种功用:( 1)引导定语从句(2)替代先行词(3)在定语从句中充当一定的成分。
3.解题要领:根据定语从句中所缺成分来确定是用关系代词还是关系副词，决不要因先行词是时间名词就用when，是地点名词就用where。
易错点2 关系代词who、whom、whose的误用对于定语从句关系词的考查，首先要确定从句是什么类型的从句，然后再分析关系词在从句中的成分，最后选择正确的词。
要求考生具有一定的句子分析能力，和理解能力。
如果缺少主宾表，要用that或which，缺少状语用关系副词when，where，why，缺少定语用whose。
易错点3 关系代词that和which的误用只用which，不能用that的情况(1) 在介词提前到关系代词之前形成"介词+关系代词"结构来修饰表事物的先行词时，关系代词必须用which.如：☞The house in which we live is very large. 我们住的房子非常大。
这就是老师正在谈及的那本参考书。
注意：如果介词不放在修饰事物的限定性定语从句的句首，which就可换为that，如：☞This is the question which/that we’ve had so much discussion about. =This is the question about which we’ve had so much discussion. 这就是我们已经多次讨论过的问题。
(2) 先行词为"those+表事物的复数名词"时，关系代词通常只用which而不用that。
如：☞Students should keep in mind those regulations which restrict their behavior.学生应牢记那些规范自己的行为准则。
as与which引导的定语从句及定语从句关系代词和关系副词的区别教案
教学过程一、复习预习1.关系代词的种类：关系代词: that, which, who, whose,关系副词: when, where, why2. He talked about the schoosl and the teachers _______he had visited .A. thatB. whichC.whoD. whom3. He talked about the schoosl and the teachers _______he had visited .A. thatB. whichC.whoD. whom4.Thelost their way in the forest ,_______made matters worse .A. thatB. whichC.whereD. when5. This is the house where he has lived for 20 years .6. This is the house that he has lived in for 20 years .二、知识讲解知识点1：非限制性定语从句1.关系代词在非限定性定语从句中的用法。
指人做主语用who,作宾语用whom ，指地点用where，指时间when，指物只用which，不能用that，作定语用whose。
e.g. He didn’t see the film, which was very interesting .(不用that)2.as 引导的非限制性定语从句as 可以像which一样引导非限制性定语从句，用来代表整个句子的内容，它的先行词可以是名词，也可以是不定式短语或整个句子。
as 在从句中作主语、宾语和表语。
此外，有些as 引导的定语从句已成为固定用法，如：As we know As has been said before 如上所述As is known to all As is often the case 像通常那样As is reported As was expected 正如预料的那样Eg：She is very careful, as her work shows.As we know, smoking is harmful to one’s health.As is often the case, we have worked out the production plan.3.重点比较as 和which 引导的非限制性定语从句的联系和区别➢as 和which 都可以代替整个句子，当定语从句置于主句之后时，as和which可以和互换。
as用法及与while区别
一、as作连词的用法1. as...as的用法as...as意为"和……一样"，表示同级的比较。
使用时要注意第一个as为副词，第二个as为连词。
其基本结构为：as+ adj./ adv. +as。
例如：(1)This film is as interesting as that one.这部电影和那部电影一样有趣。
(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。
其否定式为not as/so +adj./ adv. +as。
例如：This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。
若有修饰成分，如twice, three times, half, a quarter等，则须置于第一个as之前。
例如：Your bag is twice as expensive as mine.你的袋子比我的贵一倍。
几个关于as...as的常见句型：(1)as...as possiblePlease answer my question as soon as possible.请尽快回答我的问题。
(2)as...as usual/beforeShe looks as pretty as before.她看起来和以前一样漂亮。
(3)as long as... (引导条件状语从句)It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划。
(4)as far asHe walked as far as the railway station yesterday evening.昨天傍晚，他一直散步到火车站。
(5)as well asShe cooks as well as her mother does.她烧菜烧得跟她母亲一样好。
(完整版)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 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。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
关系代词as与which的用法区别
■as 和which的相同点
(1) as 和which都可引导非限制性定语从句，放在主句之后；在非限制性定语从
句中充当从句的主语、宾语或表语。
如：
Tom has found a good job, as / which we all hope. 汤姆找到了一件好工作，这正是我们大家所希望的。
(2) as 和which都可代表整个句子的内容或主句中的某一成分。
如：
His mother is ill, which makes him very sad. 他母亲病了，这件事情使他很难过。
He has made great progress, as / which makes us very happy. 他进步了，这使得我们很高兴。
以上两句中的as / which都指前面整个句子的内容。
Though he has lots of money, he still rides his old bike, which was bought ten years ago. 尽管他很有钱，但是他还骑着他的旧单车，这单车是十年前买的。
There you can meet many writers as you have ever read in books. 在那里，你可见到你在书中所读过的很多作家。
■as与which的区别
(1) 当先行词前面有so + adj. + a / such + (a) + adj. , the same等词修饰时，引导词只能用as，而不用which。
如：
She is so nice a girl as we all like. 她是个我们大家都喜欢的如此好的女孩。
It is such an interesting book as we all want to read. 它是本我们大家都想读的有趣的书。
上面两句中的as就不能用which替换。
(2) as 在从句中常作宾语；作主语时，从句的谓语动词常为系动词，即：系表结构或被动结构。
如：
As you expected, he turned up on time. 正如你所愿，他按时到了。
As is said above, he has conquered the difficulty. 正如上面所说，他征服了困难。
(3) 当非限制性定语从句放到主句的前面时，引导词只能用as，而不用which。
如：
As is planned, we got there before eight. 正如计划，我们再把店前到达了那儿。
(4) As引导的非限制性定语从句指表示积极的意义，与主句是顺理成章的关系，绝不能与之矛盾。
若非限制性定语从句表示一种消极的意义，则只用which。
如：He has succeeded in his career, as / which we all hope. 他在事业中成功了，这正是
我们大家所希望的。
Her grandma died last week, which made her very sad. 她的奶奶逝世了，这使得她很悲伤。
(5) 当非限制性定语从句的引导词前面有介词时，只能用which, 而不可用as。
如：
He has a new computer, for which he paid nearly ten thousand yuan. 他有一台新电脑，这台电脑花了他将近一万元。
关系代词as与which的用法区别
一、引导限制性定语从句
用在 such, same, as 等之后，引导限制性定语从句。
如：
I live in the same place as Tom does. 我和汤姆住在同处。
He’s not such a fool as he looks. 他并不像看上去的那样愚蠢。
He smokes as expensive a cigarette as he can afford. 他抽一种他买得起的最贵的烟。
二、引导非限制性定语从句
(2) 单独用作关系代词，引导非限制性定语从句，可放在主句之前、之后或中间，且主从句之间一般要用逗号隔开。
如：
As was expected, he succeeded at last. 正如我们所料，他终于成功了。
I had coffee after dinner, as is my usual practice. 我饭后喝咖啡，这是我的习惯。
Freddie, as might be expected, was attending the conference. 弗雷迪在参加会议，这是可以预料到的。
三、as与which的用法区别
① 引导限制性定语从句的区别：as用作关系代词引导限制性定语从句时，它通常只用于 such, same, as 等之后，而which 用作关系代词引导限制性定语从句时，则用于除 such, same, as 之外的其他结构。
② 引导非限制性定语从句的区别：which引导非限制性定语从句时，通常只能位于主句后，而as引导的非限制性定语从句位于主句之前、之后或中间。
根据从句谓语动词的特点来看，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. 李明迟到了，这件事使张先生非常生气。
（不可用as)
根据句意的逻辑性来看，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, as [which] was natural. 他和她结婚了，这是很自然的。
He married her, which was unexpected. 他和她结婚了，这是出乎意料的。
（不可用as）。