定语从句中as的用法
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在定语从句中的用法
一.as在定语从句中做关系代词,在从句中充当主语,宾语,或表语,as 做表语习惯省略be动词.as在限制性定语从句中1.such+名词+as从句 such用来修饰名词I don't like such a man as talks big.我不喜欢吹牛的人. Such house as she could find was expensive .凡是他能找到的房子都很贵.注意区别下面两句话This is such an interesting book as everyone likes.定语从句 as 做宾语这是一本每个人都喜欢的书.This is such an interesting book that everyone likes it. 结果状语从句这是一本有趣的书以至于每个人都喜欢.(such 修饰名词,so修饰形容词或副词)such+名词+as 表列举I like such animals as dogs ,cats.such +n+as to do sthI am not such a fool to believe her .such as to do sthMet with disappointments such as to drive me mad .2.such as从句 such是代词在主句中充当主语,宾语,表语Such as you see is our house.such as 表列举I know three languages, such as Chinese,English.such+n+as to =such+n+(that)从句as such 意思是"本身"Money as such will seldom bring happiness.the same +名词 +as从句I have the same book as he is reading.定语从句 as做宾语我有一本和他正在读的一样的一本书.(两本书) I have the same book that he is reading.定语从句 that做宾语我得到了他正在读的那本书.(同一本书)as(so)+adj+a+名词+as从句只能用名词单数He is as clever a child as I ever saw. 定语从句 as做宾语他是我曾经见过的最聪明的孩子.so +形容词+as to do sth =so...that... (so修饰形容词或副词)I get up so early to catch the first bus.so as to do sth =in order to sthI worked hard so as to finish it before weekend.as在非限制性定语从句中修饰主句,对主句所陈述的事实加以概括,补充,说明等,此时as和which一样.区别:(1)as位置灵活,可在主句前,可在主句后,which只能在主句后.(2)不是修饰主句,当前面有先行词时,不能用as,只能用which.例:The elephant is not like a snake,which has no legs. 更多例子:as 做主语as is well known (to us)as was mentioned beforeas could be expectedas could be judged from her eyesas may be seen from the bookas is recounted in his storiesas everyone could doas often happensas will be shown in fig.3as has been pointed outas has been explainedas is often the caseas (is) usualHe listed the names as follows (follows永远是单数) as做宾语as we all can seeas we all know as it is。
as在定语从句中的用法
as在定语从句中的用法as 是一个连接词,使用它可以在一个句子中连接两个语法结构,通常在定语从句中使用as,它可以作为一个定语从句的连接词来连接主句和从句。
定语从句是用来限定名词或代词性质的短语或句子,它可以被看作是一个独立的句子,但在实际使用中,定语从句可以紧跟在名词或代词之后,加以修饰,比如有些介词可以紧跟某些名词之后,我们也可以把它们作为定语从句,而 as 作为连接词(conjuction)的出现,就很容易地将上述语句归类到定语从句中。
as 这个词经常用来作为连接词,来把这个词结合在主句和定语从句之间,它的句法位置一般在名词前面,或在动词之前,例如:This is the same computer (As)we bought last year.出现在主句和定语从句前面的 as 是一个连接词,它允许主句和定语从句之间有一个平衡,此外,它也可以作为一个平等结构,出现在两个相同的成分之间,比如:I love football as much as basketball.这里的 as much as 是一个平等结构,它的意思是“和……一样多”。
在定语从句中, as 还可以发挥一定的比较作用,as 可以将其中的定语从句与主句中的相关成分进行比较,用来表示可比性,例如:在这个句子中, as 连接了从句和主句,同时又具有比较作用,表明从句中所指的事物与主句相比,具有相同的程度或数量。
另外, as 也可以用在定语从句中作为原因状语,当它作为连接词出现在一个句子中时,它连接着一个介词短语或动词不定式,或者两个连词,例如:在这个句子中, as 把动词不定式与从句中的主句相联系,表示原因。
总而言之,as 是定语从句中常用的词汇,它在定语从句中担任不同的角色,连接主句与从句,并发挥比较或表示原因的作用。
as引导定语从句时的用法
as引导定语从句时的用法as引导定语从句时的用法①as引导限制性定语从句通常用于the same…as, such…as结构中。
e.g.I want the same shirt as myfriend’s.我要一件跟我朋友一样的衬衫。
Such machines as are used in our workshop are made in China.我们车间使用的这种机器是中国制造的。
②as引导非限制性定语从句既可放在主句之前,也可放在主句之后,用来修饰整个句子。
通常用下列句型:as is known to all,as is said,as is reported,as is announced,as we all know,as I expect等。
e.g.As I expected,he got the first place again in this mid-term examination.正如我所预料的那样,他在这次期中考试中又获得了第as引导非限制性定语从句时与which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。
e.g.He made along speech,as we expected.He made along speech,which was unexpected.②当非限制定语从句为否定时,常用which引导。
e.g.Tom drinks a lot everyday,which his wife doesn’t like at all.2.关系代词在从句中作主语时,从句的谓语动词单数还是用复数应由先行词决定。
e.g.The man who lives downstairs speaks English fluently.住在楼下的那个人英语说得很流利。
The students who are in GradeThree are going to climb the hill tomorrow.3.定语从句有时不直接紧靠先行词,中间由一个定语、状语或谓语隔开。
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"。
(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。
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。
