as与which 的区别
英语语法有哪些知识点是什么
英语语法有哪些知识点是什么
关系代词引导的定语从句：
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。
扩展资料
as 的用法：
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
as与which的'区别：
1、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。
2、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。
3、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。
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非限制性定语从句
限制性定语从句与非限制性定语从句Y ou are the man who I am looking for.( )Mr Wang, who is kind, is our English teacher. ( )区别：限制性定语从句关系代词可以省略（做宾语），与先行词关系密切非限制性定语从句关系代词永不省略，与先行词关系疏远。
As与which的使用区别1 位置不同。
As飘忽不定，可前可后。
Which只能在后。
As you know, Taiwan is an inseparable part of China.Taiwan is an inseparable part of China, as you know.Taiwan is an inseparable part of China, which you know.2. 意义不同。
As（正如，就像），主句与从句意义一直时用as。
当主句与从句意义不一致或从句与主句是因果关系时用which。
They remarried,as we had expected.They remar ried, which we hadn’t expected.It rained heavily, which prevented us from going out1. _____ can see from the letter he wrote, she is a talented journalist.2. _____ was expected, he performed the task successfuly.3. Where there is smoke, there is fire, ______ you know.4. He said that he lost the book, ________ was untrue.5. It was raining hard, ______ kept us indoors.。
as和which引导非限制性定语从句的区别
As与which引导非限定性定语从句辨析1.as引导非限制性定语从句，只代表主语或主句的一部分所表达的意思(不能指代某个名词或代词)，可以放在主句前，后或中间，在从句中作主语或宾语、例如：As is known to all, he is the best student in our class. (as指代整个句子，作主语，置于句首)He opposed the idea, as could be expected. (as 指代整个句子，作主语，置于句末)As we all know, he studies very hard. (as 指代整个句子，作宾语，置于句首) Taiwan is, as you know, an inseparable part of China. (as指代整个句子，作宾语，置于句中)2.在非限制性定语从句中，which和as引导定语从句时的区别：a. which引导的从句不能放在主句前，而as引导的从句则既可以放在主句前，也可以放在主句后。
例如：As (正确)is often the case, he is absent.Which (错误)He saw the girl,as (正确)He had hoped.Which （正确）b.用能做关系代词，as和which都可以指代一个句子，但as有“正如”、“就像”之意，which则没有此含义。
He is a foreigner, as I know from his accent. (as指代一个句子，意为“正如”、“就像”)He has to work on Sunday, which he doesn’t like. (which指代一个句子，没有“正如”、“就像”)c.当从句的谓语动词是be或相当于联系动词的seem, become等时，可用as或which作主语。
但当从句的谓语是行为动词时，只能用which作主语。
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。
定语从句中的as及其与which的异同 2
二．定语从句中的as及其与which的异同1.As引导的限制性定语从句：当先行词有the same,such,as,so修饰时，要用as代替who（m), which, 或that引导定语从句。
He is such a lazy man as nobody wants to work with.他是一个如此懒的人以至于没有人愿意和他一起工作。
Harry Potter is such an interesting book as all kids like to read.《哈I’d like to have the same books as are used in your school.我想拥有和你们学校用的一样的书。
He is not such a person as I expected.他不是我所想的那种人。
He will many as pretty a girl as he can find.他尽可能找到一个优秀的女孩结婚。
2.As引导的非限制性定语从句与which 引导的非限制性定语从句的异同。
which和as都可以指代主句中的一部分或整个句子的内容，有时可以互换。
Our team lost the game, as/ which was reported in the news paper.我们队输了比赛，在报纸在已经报道了。
She was terrified, as/ which I could see from her eyes.她很害怕，我从她的眼睛里可以看出来。
区别：（1）as引导的非限制性定语从句可以放在主句前面，插在主句中间或放在主句末尾；而which引导的非限制性定语从句只能放在主句后面。
As anybody can see, the elephant is like a snake.= The elephant, as anybody can see, is like a snake.= The elephant is like a snake, as anybody can see.= Mary was late again, which made the teacher angry.(2)as引导的从句有“正如”“正像”之意，而which则无此意。
非限制性定语从句which和as的用法
非限制性定语从句which和as的用法非限制性定语从句which和as的用法我们知道，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。
现就它们引导非限制性定语从句的用法简述如下：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 high schools 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 has been pointed out(正如所指出的那样)as might be imagined(可以得到)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。
关系代词as与which引导的非限制性定语从句的区别
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。
如：He changed his mind again, which made us all angry. 他又改变了主意，这使我们大家都生气了。
She tore up my photos, which (=and that) upset me.她撕碎了我的照片，这使我很不安。
3. 在从句中作定语或介词的宾语时，要用which，不用asJenny might come, in which case I'll ask her. 詹妮可能会来，要是那样的话我就去问她。
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。
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。
as 和which的区别
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 meeting , 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。
定语从句as和which的用法
定语从句as和which的用法定语从句是我们中学时期开始就一直陪伴我们度过各种考试一种长难句。
不知道小伙伴们有没有这样的感受，那就是虽然学了这么多年的定语从句，但是在做题的过程中，碰上了定语从句依然是一筹莫展，下面先和小编一起来看一下定语从句中关系代词as和which 的区别。
1. 互换的情况：两者有时可互换。
如：I live a long way from work, as [which] you know.我住得离工作单位很远，这你是知道的。
2. 只有as的情况：以下两种情况，习惯只用as，不用which。
①在such, as, the same后引导定语从句时只能用ash。
如：I never heard such stories as he tells. 我从未听过他讲那样的故事。
It’s the same story as I heard yesterday. 这故事跟我昨天听到的一样。
This is the photo which shows my house. 这张照片拍的是我的住宅。
②当从句位于主句前面时，只用as。
如：As is known to everybody, the moon travels round t he earth once every month. 月球每月绕地球转一周，这是每个人都清楚的。
3. 值得注意的情况：以下三种情况值得注意。
①as 引导的非限制性定语从句应与主句在意义上和谐一致，但which无此限制。
比较：He went abroad, as [which] was expected. 他出国了，这是大家预料到的。
He went abroad, which was unexpected. 他出国了，这让大家感到很意外。
(不用as)②as 引导非限制性定语从句时，先行词通常不能是主句中某个具体的词，而应是整个句子、整个短语或某个短语推断出来的概念，而which 则无此限制。
as和which的异同
3）as和which的异同相同点：在非限制性定语从句中，均可替代整个主句或句中某个部分，在从句中作主语、宾语、表语。
如从句在主句之后，两者皆可用。
They failed in the exam,as /which is natural.She seems a scientist, as/which in fact she is .不同点：a 从句在主句之前用asAs we all know, his parents were killed in this war .b 表示顺从关系用as 表示转折、因果关系用whichHe has passed the exam, as we expect .He has passed the exam,which we don’t expect .Bamboo is hollow , which makes it light .c as后面多加系动词，which后面多加实义动词The earth travels around the sun , as is known to all .d Such…as/as…as /the s ame…asI have never heard such stories as he tells .The village is the same as it was four years ago .定语从句（2）二、关系副词Do you remember one afternoon ten years ago when I came to your house and borrowed a diamond necklace?The factory where his father works is in the west of the city.This is the reason why he was late for class.1定语从句中的关系词的选择原则：判断是用关系代词或是用关系副词，要看先行词在从句中所起的作用，当先行词是表时间、地点和原因的词时，一定要分析从句的结构，如果缺少主语和宾语时，关系词应该用which或that ，缺少时间、地点或原因状语时，才能用when、where 或why.A. This is the factory ____we worked.B. This is the factory ____we visited last year .A. I won’t forget the year ____ he studied in our school .B .I won’t forget the year ____ he spent in our school .A. The reason ____ he can’t come is that he is ill .B. The reason ____ he put forth is very important .三、介词加关系代词结构的用法1）名词+of which/whom结构，常常可以转化为whose+名词结构。
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。
as与which的区别
外教一对一
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.
文章来源：。
as which 的区别
1、as与which的用法区别：(1)引导限制性定语从句时，在such,as,thesame后只能用as，其他情况用which：如：I never heard such stories as he tells. 我从未听过他讲那样的故事。
It's the same story as I heard yesterday. 这故事跟我昨天听到的一样。
This is the photo which shows my house. 这张照片拍的是我的住宅。
(2)引导非限制性定语从句时，有时两者可互换：如：I live a long way from work, as [which] you know. 我住得离工作单位很远，这你是知道的。
(3)但在，在以下情况引导非限制性定语从句时，两者不可换用：①当从句位于主句前面时，只用as：如：As is known to everybody, the moon travels round the earth once every month. 月球每月绕地球转一周，这是每个人都清楚的。
②as引导的非限制性定语从句应与主句在意义上和谐一致，which无此限制：如：He went abroad, as[which] was expected. 他出国了，这是大家预料到的。
He went abroad, which was unexpected. 他出国了，这让大家感到很意外。
(不用as)③as引导非限制性定语从句时，先行词通常不能是主句中某个具体的词，而应是整个句子、整个短语或某个短语推断出来的概念，而which则无此限制：如：The river, which flows through London, is called the Thames. 这条流经伦敦的河叫泰晤士河。
(不用as)④当as引导非限制性定语从句作主语时，其谓语通常应是连系动词，而不宜是其他动词，而which则无此限制：如：She has married again, as[which] seemed natural. 她又结婚了，这似乎很自常。
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D 6.It was raining,_____was a pity. A.what B.that C. as D. which
B 7.My village is no longer the same ___ it used to be.
A.which D.when
B.as
C.where
8.______is reported in the As newspapers, talks between the two countries are making progress. A.It B. As C. That D. Which 9. The weight of an object in B space is not the same _____ it weights on the surface of the earth.
两者均可引导非限制性定语从句，有时可以 互换，但下列情况多用as。 1. 关系代词引导的定语从句居句首时。 e.g. As we all know, the earth is round. 2. 当与such或the same连用时，一般用as。 e.g. Such books as you tell me are interesting. I have the same plan as you.
as 的特殊用法:
the same (…) as …
such… as …
so … as…
the same…as…与the same …that… 的区别
I want to have such a dictionary as he has. I shall do it in the same way as you did. I like the same book as you do.
A thach D.
10.This book is not such C _____I hope. A.that B.which D.what C.as
预习提纲
when where的用法
As everybody knows,she is very good at dance. She is very good at dance, as /which everybody knows.
It has been said above. Grammar is a set of dead rules. Grammar is a set of dead rules,as /which has been said above. As has been said above, grammar is a set of rules.
3.Such signs _____we use in the A experiment ______Greek letters. A.as ,are B. as, is C. that, are D. that, is
(94 NMET) _______ is known to all, China will be an _____powerful country in 20 or 30 years’ time. A.That;advancing B. This;advanced C. As;advanced D. Which; advanced
Please compare:
This is the same pen as I lost.
这本书和我丢的那本一模一样。
This is the same pen that I lost it.
这本书就是我丢的那本。
Please complete the following sentences and compare: This is such an interesting book ____ as we all like. This is so interesting a book ____ we as 这是大家都喜欢的如此有趣的一本书。(定语从句) all like.
He married Jenny.
This was natural(自然的;正常的) He married Jenny ,as /which was natural. As was natural,he married Jenny
She is very good at dance. Everybody knows this.
Welcome to our class!
The Attributive Clause
定语从句
本课学习内容:
定语从句中的关系代词as的用法； as 和which的区别
学习要求: 掌握as能充当的成分,引导从句的 类型以及和which在引导非限定性定语从 句的区别. 重点：as的具体用法 难点： as 和which引导非限定性定语从 句的区别.
Key: C
4.I passed him a large glass of C whisky, _____ he drank immediately . A.that B.as C.which D.who
5.They hope to get such a tool C ___ he is using A.where B. that C. as D.which
The experiment is very important, as indeed it is As is known to all, he is the best student in our class
As we all know, he works very hard.
as与which引导的定语从句
3. 当从句和主句语义一致时，用as，反 之则用which。(既顺着语气说时用as.逆 着语气说时用which.) e.g. She has married again, as was expected. She has married again, which was unexpected.
4. as在从句中作主语时，后面常接行为 动词的被动语态，如be known，be said， be reported等，如从句中行为动词是主 动语态，一般要用which作主语。 e.g. She has been late again, as was expected. Tom has made great progress, which made us happy.
人小鬼大的
as
The earth is round. It is known to all.
The earth is round, as is known to all. As is known to all, the earth is round.
The earth is round, which is known to all.
这本书如此有趣，大家都喜欢。(结果状语从句)
that
This is such an interesting book ____ that we all like it. This is so interesting a book ____ we all like it.
1. It rained hard yesterday, _____ B prevented us from going to the park. A. that B. which C. as D. it B 2.______ is mentioned above, the number of the students in senior school is increasing. A. Which B. As C. That D. What