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.
关系代词as, which的区别
3.先行词被 the same/ such / so 修饰时，用关 系代词 as 引导，as可以作主语、宾语或表语 ，可以用来代替先行词。 as作主语：They could only read such stories as had been rewritten in simple English. as作宾语：These houses are sold at such a low price as people expected. as作表语：He is not the same man as he was.
关系代词as, which的区别
（2012福建卷-23） The air quality in the city, ________is shown in the report, has improved over the past two months. A. that B. it C. as D. what 【解析】本题考查定语从句的引导词。本句难点 是把定语从句分割出来放在句首就很明了了， 把句子转换成 is shown in the report, the air quality in the city has improved over the past two months.就能直接看到非限制性定语从句引 导词放句首指的是下文所提到的一句话用as引 导“正如在报告里所写的那样”。
关系代词as, which的区别
（2012安徽卷-29 ）Ａlot of language learning, ___ has been discovered, is happening in the first year of life, so parents should talk much to their children during that period. A. as B. it C. which D. This 【解析】本题考查as引导的非限制性定语从句。as 引导的非限制性定语从句位置灵活，在此以插入语的 形式置于主句之间，as从句修饰限定的是整个主句（a lot of language learning is happening in the first year of life）。本题易误选which，理解成which从句修饰a lot of language learning。
定语从句中关系代词as与which的用法
学法新探关系代词as与which在定语从句中有时可以相互替换，但又有不同之处，稍不留心，极易使用不当，出现差错。
对此，笔者剖析了关系代词as与which在定语从句中的用法，以期能够帮助同学们准确把握和运用。
一、关系代词as与which在限制性定语从句中的用法关系代词as、which均可以用于限制性定语从句中，有时可以相互替换，但两者仍有着一定的差异，具体体现在：（1）当定语从句中的先行词为某物，且先行词前面有so,such,the same，as many/much等修饰语时，则只能用as引导限制性定语从句，不能用which引导。
比如：①It’s the same book as I bought yesterday.这本书和我昨天买的一样。
（不能用which代替as）②HongKong is so prosperous a city as is referred to as a shop-ping paradise.香港是一个繁荣的城市，被称为购物天堂。
(不能用which代替as)③These housed are sold atsuch a low price as people expected.这些房子按人们预料的那样低价出售了。
(不能用which代替as)（2）当先行词是表示某物的名词或代词时，且在从句中又做介词宾语时，则不可以用as引导限制性定语从句，只能用which引导限制性定语从句。
如：①Thisis the good car on which I spent all my money.这是我花了所有钱买的那辆好车。
（不能用as代替which）③This is the knife with which we cut the bread.这是我们切面包用的刀。
（不能用as代替which）③There is amountain of which the top is always covered with snow.有一座山顶总是覆盖着雪的山。
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as与which用法异同 (1)
定语从句中as 与which用法异同摘要：定语从句作为高考必考的语法项目之一，受到同学和教师的关注。
为了使同学们在高三学习及以后的复习阶段有章可循，不盲目，不失分，本文就定语从句中as和which 的用法作一简单比较。
关键词: as 与which 异同定语从句在高中语法的学习中是一个难点，也是高考必考的语法项目之一，为了使同学们在高三学习及以后的复习阶段有的放矢，现将定语从句中as和which的用法做一比较，供大家参考。
一、在限定性定语从句中as 和which 作为关系代词用法有差异：⑴、as 常与such, the same, as, so等词连用构成定语从句。
as 在定语从句中作主语、宾语、表语，这时作宾语的as 不可以省略。
as 在从句中指前面提到的人或物。
Such people as (people such as) you describe are rare nowadays.(你所描述的人现在已很少见了。
)I have the same trouble as you ( have ).(我和你有同样的困难。
)张道真 1995 实用英语语法［M］北京外语教学与研究出版社（7）：573-574He is as great a man as ever lived.注意：①the same ---as 引导的定语从句和the same ---that 引导的定语从句不相同。
the same---as 表示的是“和---一样的”所指的是同一类事物。
the same---that表示的是“如---一样的”所指的是同一个事物。
下面试比较：I bought the same dictionary as you bought.（我买了一本和你的一样的词典。
）I met the same person that I saw yesterday.（我遇见了昨天你看见得那个人。
）马德高，朱崇军 2008 高中英语语法全解［M］北京中国社会出版社 (7):252②such--- as---中，as 引导定语从句，as 在从句中作主语、宾语等; such--- that ---中的that 引导的是结果状语从句。
as和which在非限制性定语从句中的区别
as和which在非限制性定语从句中的区别作者：王艳霞来源：《新课程·教师》2010年第10期在非限制性定语从句中as和which是经常使用的关系代词,他们都可以指代整个主句,相当于and this或and that,但它们还是有各自的使用规则,有所区别。
一、从意义上看,as一般指代人们日常生活中都知道的常识性的东西,因而常被译成“正如”;而which代指前面主句的内容,意为“这一点”。
二、从位置上看,as引导的非限制性定语从句,既可放在主句前又可置于主句后,有时还可插入主句中,而which引导的非限制性定语从句只能置于主句之后。
例如:The weather turned out to be very good,which was more than we could expect.结果天气非常好,这一点我们没有料到。
As is known to everybody, the moon travels round the earth once every month.The moon travels round the earth once every month,as/which is known to everybody.众所周知,月亮每月绕地球转一次。
三、当定语从句放在主句后面时,一般用as和which都可以,但也不总是这样,例如:1.当非限制性定语从句是否定句或表示否定意思时只能用which。
如:He came here very late,which was unexpected(not expected).他迟到了,这是意料之外的。
2.当as在从句中作主语时,后面常接动词的被动语态,如be known、be said、be reported、be announced等。
如果从句是主动语态,一般用which作主语,如:She has been absent again,as is expected.她又缺席了,这在意料之中。
定语从句aswhich区别
定语从句aswhich区别定语从句as which区别as和which作为关系代词都可以用来引导非限制性定语从句，指代整个主句所表达的内容，在从句中作主语或宾语，但它们在用法上有区别，这一点许多学生往往搞不清楚。
下面我们来了解一下定语从句as which区别吧!第一、在限制性定语从句中的区别：as 的用法：其通常和such the same连用，代指物在从句中做主语或宾语This is the same pen as I bought yesterday。
这种笔和我昨天买的笔一样(同样的但不是同一个)。
引导定语从句的关系词在从句中做宾语，因先行词被the same所修饰所以用as引导注意：上句与下句的区别This is the same pen that I used yesterday.这就是昨天我使用的那一支钢笔(指的是同一个)。
I studied in the same school as she did in Beijing.我和他在北京的同一所学校就读。
引导定语从句的关系词在从句中做宾语，因先行词被the same所修饰所以用as引导I want to have such a dictionary as he has.我想要一本和他的一样的字典。
引导定语从句的关系词在从句中做宾语，因先行词被such所修饰所以用as引导which的用法：关系代词，在从句中做主语或宾语，做宾语时通常可以省略(直接做介词的宾语时除外，不能省。
)The radio which he bought yesterday doesn't work now.他昨天买的收音机现在坏了。
引导定语从句的'关系代词在从句中做宾语，代指物，故用which.Can you lend me the book which was written by Lun Xun..你能借我那本由鲁迅所写的书吗?引导定语从句的关系代词在从句中做主语，代指物，故用which.This is the park which is the most beautiful one in our city.这是我们这个城市最漂亮的公园。
as引导非限制性定语从句时与which的区别
as引导非限制性定语从句时与which的区别的区别1.当主句和从句语义一致时，用as；反之，用which来引导非限制性定语从句来引导非限制性定语从句 2.当非限制定语从句为否定时，常用which引导。
引导。
3.AS可句子首或尾只在主句后面。
可句子首或尾 which只在主句后面。
4.such，same修饰先行词时关系词用as，介词后用which as/which都可以引导非限制性定语从句。
当引导词在从句中充当主语，若从句谓语动词是非be动词，只能用which.其他情况，比如引导词作主语，谓语动词均可。
是be动词，或者做宾语，或者做补语，as和which均可。
he said he was a king,which surprised me.只能用which he said he was a king,which/as was a lie. he said he was a king,which/as i don't believe. 若果定语从句移到前面则无论什么情况都用as as i believe,......... as is known to all,.......... as we all know,.......... as is reported,................ as is said,...... 2|评论Which as 1、语义的区别、语义的区别当主句和从句语义一致时，用as；He made along speech,as we expected. 当主句和从句语义转折不一致时，用which，He made along speech,which was unexpected. 2、位置的区别、位置的区别不可能放在句首。
看到句首一定用as，which 不可能放在句首。
as we all know, as is mentioned above as often happens as is often the case As is well known 3、含义的区别、含义的区别as有“正如”的含义，which没有此含义。
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。
英语中关系代词which和as的区别
英语中关系代词which和as的区别(1)位置上，as可放在句首、句末，也可插入主句中;which一般放在主句之后(有时也可用as)：As we all know, reading is very important.Reading is very important, which we have already known when we were very young.(2)意义上，as有正如、按照、正像之意，一般用在肯定句中;which 可用于含肯、否定意义的句子中：He failed in the exam again, as was expected.He failed in the exam again, which was unexpected.(3)当定语从句所修饰的主句内容是谓语动词的对象时，常用as，如：Jack was admitted into the university, as we had expected.(4)固定结构，用as：as has been said before as often happensas is well known as we all can seethe same...as such...as(5)当关系代词代表主句引起的结果，又做主谓宾补(SVOC)结构中的主语时，多用which：He passed the exam, which made him delighted.(6)在从句中作介词宾语时，用which，如：They went to the zoo, after which they saw a film. (7)在从句中代表主句中的谓语的整个概念时，常用which，如：He can write a letter in English, which I cannot.(8)指代主句中某一名词时，多用which，如：Beijing, which he was born, is our capital.(9)代替主句中的形容词时, 常用which，如：Lily thought me clever, which she herself was.在定语从句中，相比于which VS that，who VS that，我们对which 与as两者区别的关注度要少很多，在遣词造句或是口语表达中，也常常是“跟着感觉走”。
as和which引导的定语从句
As与which引导的定语从句先研究下面两个例句：○1.This elephant is like a snake, as /which everybody can see.=As everybody can see, this elephant is like a snake.任何人都看得出来，这头象像条蛇。
○2.Tom didn’t pass the physics exam, which made his parents very angry.Tom物理考试不及格，这使得他父亲很生气。
这两个例句中，as和which所代表的都是整个主句所表示的内容。
但有两点不同之处：1．在形式上as引导的非限制性定语从句可位于主句的后面，也可位于主句的前面；而which引导的非限制性定语从句只能位于主句的后面，不能位于主句的前面。
2．在意义上，as引导的定语从句和主句的关系一般为一致关系，常译为“正如……”，“就像……”，而which引导的定语从句和主句的关系是因果关系，或which引导的定语从句是对主句的评论。
因此，在意思通顺的情况下，which可代替as，而as许多时候不能代替which，如句○2。
再如：1．He was late again, as / which we had expected.=As we had expected, he was late again.正如我们所料，他又迟到了。
/他又迟到了这是我们早就料到的。
2．The street hasn’t been cleared for weeks, which makes it very dirty.街道好多星期没有打扫了，因此整条街很脏。
（不用as）3．The young man cheated his friend of much money, which was disgraceful.那年轻人诈骗了他朋友许多钱财，这是不光彩的。
as与which引导非限制性定语从句的区别
as与which引导非限制性定语从句的区别作者：董军权来源：《广东教育·高中》2013年第11期在教学实践中，尤其在批改作文中笔者发现，有的学生对as与which引导非限制性定语从句的用法模棱两可，含混不清。
下面从两者的用法区别展开说明，以便正确地使用。
1. 从指代的异同来说，as指代整个句子；which指代整个句子或者主句中的某个成分。
如：She is not unconscious，as can be judged from her eyes.她并未失去知觉，这从她的眼睛里可以看出。
（as指代整个句子）Mother always asked him to study hard，which helped him a lot. 他妈妈总是让他刻苦学习，这一点对他帮助很大。
（which指代整个句子）The house， which was built fifty years ago， stood still in the earthquake. 这所建造于50多年前的房子，在地震中依然耸立着。
（which指代具体的先行词）2. 就主句与从句的位置关系来说，as引导的从句可放在主句的前面或者主句的后面；which引导的从句只能放在主句的后面。
如：As everybody knows， knowledge is power. 众所周知，知识就是力量。
Knowledge is power， as everybody knows.众所周知，知识就是力量。
Knowledge is power， which is accepted widely all over the world.知识就是力量，这一点世界公认。
3. 从意义上来说，as意为“正如，像，由……而知”； which意为“这就使得，这一点”。
如：He is a great hero， as is described in the report.正如在报道中描述的一样，他是一个伟大的英雄。