關(guān)系代詞AS的用法

1、關(guān)系代詞AS的用法AS作關(guān)系代詞,用來引導(dǎo)定語從句:限制性定語從句和限非制性定語從句 一、AS引導(dǎo)限制性定語從句 AS引導(dǎo)限制性定語從句時,通常和such,the same,as(so)等連用,構(gòu)成such.as/such as,the same.as/the same as,as(so).as等結(jié)構(gòu),在從句中可作主語,賓語和表語。 1.such.as/such as意為“.的那種.,像那樣的”，such.as/such as引導(dǎo)限制性定語從句時,既可指人,也可指物。such用于名詞之前時,具有形容詞性質(zhì)；such單獨使用(即后面不接名詞)時,具有代詞性質(zhì)。 Dont trust such m

2、en as praise you to your face.(as作主語) 不要相信那種當(dāng)面吹捧你的人。 You should read only such books as you can understand without much difficulty.(as作賓語) 你應(yīng)當(dāng)只讀那些你讀起來不太難懂的書。 Associate with such as will improve your manners.(as作主語) 要和能改善你的言行的那種人結(jié)交。 2.the same.as/the same as意為“與.同樣的”,和such一樣,the same既有形容詞作用,又有代詞性質(zhì)。 W

3、e have arrived at the same conclusoin as they have.(as作賓語) 我們已得出和他們同樣的結(jié)論。 比較:the same.as和the same.that不同,前者是“同那一個相似”,后者是“正是那一個”。如： This is the same watch as I lost. 這同我丟的那塊表一樣。 This is the same watch that I lost 這正是我丟的那塊表。 3.as(so).as意為“和.一樣”,后接由many,much等修飾的名詞或由形容詞修飾的單數(shù)名詞,注意其語序為as(so)+adj.+a+n+as,如

4、： Its as pleasant a film as I have ever seen. 這是一部和我以往看的同樣好的電影。 As many soldiers as marched were killed. 很多游行的戰(zhàn)士都被殺了。 注意:such .as與such.that ,so.as與 so.that的區(qū)別: that是連詞,引出結(jié)果狀語從句,在從句部分不作成分;as是關(guān)系代詞,引出定語從句,在從句中可作主語,賓語和表語。比較: He is such a nice boy that everyone likes him. He is such a nice boy as everyon

5、e likes. It is so difficult a problem that nobody can work it out. It is so difficult a problem as nobody can workout. 二、AS引導(dǎo)非限制性定語從句 AS引導(dǎo)非限制性定語從句時,通常指的不是主句中的某一個名詞(先行詞),而是指整個主句表達的內(nèi)容,對主句所作的陳述進行附加說明,意為“這.,如.或正如.”。這種從句可位于主句之前,之中或之后。 As we all know,Taiwan belongs to China. Taiwan,as we all know, belongs

6、 to China. Taiwan belongs to China,as we all know. 注意下面的習(xí)慣用法: as is well discussed 正如已討論過的 as is often said 正如通常所說 as is often the case 通常就是這樣 as has been pointed 正如所指出的那樣 as has been said before 如上所述as often happens 如同經(jīng)常所發(fā)生的那樣 as might be expected正如所料 as is well known to all眾所周知 在多數(shù)情況下,從句中的謂語助動詞可以省

7、略 as explained before 如前面所解釋的 as mentioned above 如前面所提到的 as shown in the figure 如圖所示 as seen from the table 從表中可以看出 as already discussed 正如已討論過的 高考題精選： 1._is known to all,China will be an and powerful country in 20 or 30 years time.(1994上海) A.That；advancingB.This；advanced C.As；advanced D.It；advancin

8、g 2._is mentioned above,the number of the students in senior high schools is increasing.(1999上海) A.It B.As C.That D.Which 3.These houses are sold at such a low price_people expected. A.likeB.as C.that D.which 4._is known to everybody, the moon travels round the earth once every month.(2001NMET) A.It

9、 B.As C.That D.What 5.There at the door stood a girl about the same height _. (2004北京春) A.as me B. as mine C.with mine D. with me 6._is reported in the newspapers, talks between the two countries are making progress.(2004北京) A. It B. As C. That D. What 7._is often the case, we have worked out the production plan.(2004江蘇) A. Which B. When C. WhatD. As 8._I explained on the phone,your request will be considered at the next m