as在定语从句中的用法
as在定语从句中是关系代词,可做句子成分。
但在上述两个句子中,as只是在引导定语从句而已,不作句子成分。
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.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 followedas定语从句的用法及定语从句的主谓一致整理者:尹广兴一:as可以代替整个句子或一件事,引导非限制性定语从句,在从句中作主语、宾语或表语,意为“正如……,就像……,据……”;从句位置可置于主句之前或之后,有时也可作为插入语置于句中,一般用逗号和主句隔开。
as的这种用法常见于以下这些结构:as we can see, as can be seen, as we know, as is(well)known, as may be imagined, as often happens, as has been said before, as was mentioned above, as is often the case, as/indeed it is…例:As is well known,great changes have taken place in China. 或Great changes, as is well known, have taken place in China.众所周知,中国发生了巨大的变化。
( as在定语从句中作主语。
)This experiment is very simple,as indeed it is.实验非常简单,事实上也确实如此。
(as在定语从句中作表语。
)注意:①which在引导非限制性定语从句时,也有和as一样的功能,可以代替整个句子,但which只能用在主句之后。
②在as所引导的非限制性定语从句中,如果运用的是被动语态结构,be动词可以省略;但which没有此用法,be动词不可省。
例如:She married him,which was unexpected.=She married him as(was)unexpected.她嫁给了她,这一点大家都没有料到。
(作主语,代替前面的句子;用which时was不可省。
)二as除了代替整个句子,也可以代替主句中一个特定的词。
as在它引导的定语从句(限制性或非限制性)中可以充当主语,宾语和表语;在这种用法中它经常和such, so, the same等词搭配使用;且当先行词中有such, so, the same等词修饰时,关系代词通常必须用as。
例如:1. They were satisfied with this decision,as was agreed beforehand.他们对这个决定都满意,这事先已经经过他们同意了。
( as在定语从句中作主语,其先行词是this decision)2. I never heard such stories as he tells.我从未听过他讲的这类故事。
( as在定语从句中作宾语,先行词是such stories.)3.The place doesn't look the same as it was before liberation.这个地方看上一去和解放前大不一样了。
( as在定语从句中作表语,先行词是same)4.Have you bought the same book as I referred to yesterday?你有没有买我昨天说的那本书啊?( as在定语从句中作宾语,先行词是book)注意:先行词中有the same修饰时,定语从句也可用that引导,但意思上有区别,as表示与此同类;that表示就是那一个,同物。
as ,which 引导定语从句的辨析与练习2010/04/19 15:48 as 与which都可以引导一个没有先行词的定语从句,as和which用来代替整个主句或主句中的一个短语。
它们的区别是:as 引导的从句可以放在主句的前、中、后。
对主句起补充说明的作用,解释主句的依据,强调主句确定性等,译为:“正如;由...而知”。
从句动词多表示消息来源,如:see,know,expect。
结构形式多为:as we know 或as is known。
which 引导的从句一般都放在主句的后面。
说明主句产生的结果,或对主句的内容作出判断,译为:“这...”= and th is or but this。
从句动词多表示使让、或结果,如:make,break。
as在定语从句中当主语
as在定语从句中当主语as在定语从句中当主语as在定语从句中当主语用法大家了解吗?以下是店铺分享as在定语从句中当主语用法,请参考!一、在定语从句中as可以做主语吗可以,特别是非限定性定语从句。
1,as 能放在定语从句句首2.as和固定用法搭配:as you know.如例句:(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.二、定语从句中as的用法引导状语从句的连词as可以用作关系代词,引导定语从句,因而被称作准关系代词。
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;su ch…that引导结果状语从句。
高中英语微课件 as在定语从句中的用法
3.All the buses have to carry as many passengers as they can.
China is a developing country, as we know/as is known to all.
China, as we know/as is known to all, is a developing country.
As we know/As is known to all, China is a developing country . 先行词
整个主句。它们有什么区别呢?
1.正如我们所料,Mary考试不及格。
As we had expected, Mary failed in the exam .
2.Mary考试不及格,这使她很难过。
Mary failed in the exam ,which made her sad.
位置
意思
as which
Summary
as在定语从句中的用法
… such…as 限制性定语从句
区别
…such/so…that
…so…as
…the same…as…
as
…as…as
关系 代词
在定语 从句中 充当主 语或宾 语
非限制性定语从句
指代整个主句 位于主句的前,后, 中均可意为Fra bibliotek正如”区别
which 引 导的非限 制性定语 从句
as在定语从句中的用法
初中英语定语从句知识点:As在定语从句中的用法
初中英语定语从句知识点:As在定语从句中的用法
1. 引导限制性定语从句和非限制性定语从句
(1)as多与such 或the same连用,可以代替先行词是人或物的名词。
(2)as 也可单独使用,引导非限制性定语从句,作用相当于which。
例如:
The elephants nose is like a snake, as anybody can see.
(3)the same that与the same as在意思上是不同的。
2.As引导的非限制性定语从句的位置
as引导的非限制性定语从句位置较灵活,可以位于主句前面.中间或后面,一般用逗号与主句隔开,但which所引导的非限制性定语从句只能放在主句之后。
例如:
(1) As is expected, the England team won the football match.
(2) The earth runs around the sun, as is known by everyone.。
as引导的定语从句的用法讲解
as引导的定语从句的用法讲解一、AS 引导的定语从句介绍英语中,定语从句是用来修饰名词或代词的从句。
它通常由关系代词或关系副词引导,并与被修饰的名词或代词构成一种修饰关系。
其中,用 as 引导定语从句的情况是比较特殊的,今天我们就来详细讲解一下 AS 引导的定语从句的用法。
二、用 As 引导定语从句时的基本结构1. 作为主语:The company, as we all know, is going bankrupt.(众所周知,这家公司要破产了。
)分析:上述例子中,“as we all know” 是一个定语从句,修饰主句中的名词“the company”。
其中,“as” 引导了这个定语从句,并在从句中充当关系代词的作用。
“we all know” 则是这个定语从句的谓语部分。
2. 作为宾语:I have such a good friend as can always help me when I'm in trouble.(我有一个好朋友,他总是能在我困难时帮助我。
)分析:上述例子中,“as can always help me when I'm in trouble” 是一个定语从句,修饰主句中的名词“a good friend”。
这个定语从句用了 as 引导,并在从句中作为关系代词。
注意,此时定语从句中的谓语部分是“can always help me when I'm in trouble”。
3. 作为表语:I found my brother, as was expected, reading a book in his room.(正如所预料的那样,我发现我弟弟正在房间里看书。
)分析:上述例子中,“as was expected” 是一个定语从句,修饰主句中的名词“brother”。
这个定语从句由 as 引导,在从句中充当关系代词。
“was expected” 是该定语从句的谓语。
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/much as;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"。
职称英语As在定语从句中的用法
2014职称英语:As在定语从句中的用法1.引导限制性定语从句和非限制性定语从句(1)as多与such 或the same连用,可以代替先行词是人或物的名词。
Such people as you described are rare nowadays.像你描述的那些人现如今已经很少了。
The problem is exactly the same as you referred to.这个问题确实和你提到的完全一样。
(2)as 也可单独使用,引导非限制性定语从句,作用相当于which。
The elephant's nose is like a snake, as anybody can see.正如大家所看到的那样,象的鼻子像条蛇。
As everyone knows, dogs are good friends of human beings.正如大家所知,狗是人类的好朋友。
As the teacher says, you can never learn well unless you practice.正如老师所说,你只有练习才能学的好。
2.As引导的非限制性定语从句的位置as引导的非限制性定语从句位置较灵活,可以位于主句前面.中间或后面,一般用逗号与主句隔开,但which所引导的非限制性定语从句只能放在主句之后。
例如:(1)As is expected, the England team won the football match.正如所期望的那样,英国队赢了足球比赛。
(2)The earth runs around the sun, as is known by everyone.地球绕着太阳转是大家都知道的。
定语从句里as用法
定语从句里as用法定语从句里as用法导语:定语从句,一个简单句跟在一名词或代词后(先行词)进行修饰限定,就叫做定语从句。
在主句中充当定语成分。
被修饰的.词叫先行词。
定语从句不同于单词作定语的情况,它通常只能放在被修饰的词(即先行词)之后。
下面是由店铺为你整理的定语从句里as用法,欢迎大家阅读。
由as,which 引导的非限定性定语从句,as和which可代整个主句,which相当于and this或and that.1)As一般放在句首,which在句中.2) as也可在句中往往和see,know,expect等词连用.a.He seemed not to have grasped what I meant,which/and this greatly upsets me.b.The sun heats the earth,which/and this is very important to us.c.As was expected,the beautiful girl married a handsome boy.d.As we all know,smoking is harmful to one's health.e.He must be from Africa,as can be seen from his skin.定语从句中若先行词前有the same,such作修饰语,通常用as作关系代词.He used such expressions as he could find in the texts.They stayed for the night in the same room as they had once rented.such…as和such..thatsuch…as定语从句,as在从句中可以作主语,宾语,表语;such…that引导结果状语从句,that不充当任何成分,只起到连接作用,如:They talked in such simple language as children could understand.They talked in such simple language that children could understand it.the same…as和the same…that两者都可以引导定语从句,但the same…as指两件事物,而the same…that指同一件事物:He is using the same pen as I did 10 years ago.他用的这支钢笔和我十年前用的那支一个样.He is using the same pen that I did 10 years ago.他用的这支钢笔就是我十年前用的那支.【定语从句里as用法】。
as引导的定语从句例句
as引导的定语从句例句as引导的定语从句例句你对英语语法感兴趣吗?英语语法是针对英语语言进行研究后,系统地总结归纳出来的一系列语言规则。
例如:as引导非限制性定语从句,一般不指...总之,由于as的用法复杂,分享了as引导的定语从句的例句,欢迎阅读!一、as用作关系代词引导定语从句1. as 引导非限制性定语从句,一般不指代某个具体的名词或代词,而是代表整个主句或主句的一部分。
这种从句可放在主句之前,也可以放在主句之后,有时还可以放在主句的中间。
如:As is reported in the newspapers, talks between the two countries are making progress. 正如在报纸上所报道的,两国间的谈判有所进展。
Grammar is not a set of dead rules, as has been said above. 如上所说,语法不是一套死条文。
Spiders are not insects, as many people think, nor even nearly related to them. 蜘蛛不是昆虫,尽管许多人都这样认为,它甚至与昆虫几乎没有联系。
2. as 引导限制性定语从句,主要用于the same…as(与……相同),such…as(像……一样),as…as(与……一样)。
如:She knew he felt just the same as she did. 她知道他的感受和她一样。
Such a man with a good temper as Mr. Li is is easy to get along with. 像李先生这样好脾气的人是容易相处的。
He smokes as expensive a cigarette as he can afford. 他抽一种他买得起的最贵的烟。
二、as作为从属连词引导时间状语从句表示“当……的时候”或“一边……一边”,强调主句的动作和从句的.动作同时发生。
as可以引导的定语从句
as可以引导的定语从句as可以引导的定语从句导语:单词as可作关系代词,下面店铺讲解as可以引导的定语从句,欢迎参考。
as作关系代词时,引导定语从句在从句中充当主语、宾语、介词宾语或表语,既可以指人,也可以指物。
(1)as引导定语从句时,有如下结构:“the same …as”,“such …as”,“as…as”“so many (much, few, little)…as”,译作“像……一样的人(或物)”。
例如:This is such an easy novel as you can read.这本小说很容易,你能读得懂。
They have never read so many books as I read last year.他们从来都没有读过像我去年读过的那些书。
(2)as单独引导定语从句时,修饰整个主句或主句中的一部分,可以放在句首、句中或句末。
当as在从句中作主语时,从句的谓语通常是被动语态或系表结构;as在从句中作宾语时,从句的谓语常用“情态动词+动词原形”构成。
常见的结构如下:as is known to all 众所周知as has been said above 如上所述as was expected 正如预料的那样as has been pointed out 正如指出的那样as we all can see (know, hear)正如大家看到的(知道的、听到的)那样。
例如:As is known to everybody, the moon travels round the earth once every month.众所周知,月球每个月绕地球转一周。
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。
定语从句as的用法总结
定语从句as的用法总结作为英语中的一种重要句法结构,可以用来修饰名词或代词。
在使用中,我们常常会遇到as的。
那么,下面我们来总结一下as的用法。
首先,as可以引导限制性,说明被修饰名词的一种身份、角色或特点。
例如:1. He works as a teacher.他的职业是教师。
这个句子中,as引导的修饰名词teacher,说明了他的职业。
2. I saw him as a good friend.我把他视为一个好朋友。
这个句子中,as引导的修饰名词friend,说明了对他的评价。
其次,as也可以引导非限制性,起到详细描述的作用。
例如:1. She arrived, as I expected.她按照我所预计的时间到达。
这个句子中,as引导的提供了一个详细说明,表明她到达的时间和我所预计的一致。
2. The weather, as you can see, is getting warmer.正如你所见,天气越来越暖和了。
这个句子中,as引导的提供了一个补充说明,解释了天气的情况。
此外,as还可以在句中作为介词使用,引导状语从句,表示时间、原因、方式等。
例如:1. As we all know, practice makes perfect.众所周知,熟能生巧。
这个句子中,as引导的状语从句表示原因,说明了为什么要多加练习。
2. She went to bed early as she was tired.她因为累了所以早早就上床睡觉了。
这个句子中,as引导的状语从句表示原因,解释了为什么她早早上床睡觉。
另外,as还可以引导让步状语从句,表示尽管某种情况存在,但另一种情况仍然成立。
例如:1. He studied hard, as tired as he was.尽管他很累,但他还是努力学习。
这个句子中,as引导的状语从句表示让步,说明了尽管他很累,但他仍然努力学习。
2. As difficult as it is, we have to finish the task.尽管很困难,但我们必须完成这个任务。
