常见的这种定语从句还有: as has been said before(如前所述); as is mentioned above(如上面提到的); as may be imagined(正如可想象的那样); as is well known to us all(众所周知); as (sb) all know(众所周知); as often happens(正如经常发生的那样); as has already been pointed out(正如已经指出的那样); as we all can see(正像我们都能看到的那样)等｡

4.总结

1) 定语从句的as一定会具有先行词(名词短语,代词,主句或主句的一部分)的含义,并一定要在定语从句中做一定的成分.

This is the same watch as I have lost.

as代替the watch在定语从句中充当lost的宾语.

而as引导方式状语从句时, as只是个连词而已,它既不会代指主句的任何成分,更不在从句中做什么成分,它只是引导词起个引出从句的作用而已,就像when/while/if/although一样。而且as的前面不一定就是名词性的结构(就好比先行词一样),它引导这个从句只是整个大句的一个状语而已.

We must do as the Party tells us (to do).

as引导的方式状语从句经常出现省略的语法现象。

2)至于as引导的限制性和非限制性定语从句之间的区别, 最明显的区别就是主句和从句之间有没有逗号隔开;而且as引导的非限制性定语从句的位置灵活,可在主句前后甚至是中间都可以,经常会有一些"as we all know"这样常见的结构.

但是as引导的限制性定语从句则是较为固定的“the same ... as ...”, “such ... as ...”, “as many (much, few, little) ... as ...”等结构.

最后一点,as引导的非限制性定语从句,as可代指整个主句; 而as引导的限制性定语从句中,as所代替的一般只是名词短语.