as 在定语从句中用法.ppt

as_在定语从句中用法As is often the case, 这是常有的事
As is known to us all,众所周知
As is said/mentioned above,
As often happens, 正如经常发生的那样
as 用在非限制性定语从句中, 有“正如…”“正像…”之意。
As has been pointed out 正如已指出的那样
As we all know, body language sometimes is the key to munication.
as和which的差别
as 引导的从句位置灵活,多放句首,并有逗号隔开, which一般多放主句后面(见报纸)
as 用在固定结构中
如:the same…as…像…一样的
such…as…
as…as…
so…as…
I use the textbook.
You use the same kind of text book, too.
I use the same textbook as you do.
= I use the textbook just like the one that you do.
the same …as 和…一样的
I stay in this classroom. You all stay in this classroom too.
I stay in the same classroom as you all do.
她和我坐在同一排。
这是一本年轻人都喜欢的书。
This is such a book as all young people like.
这是一本如此有趣的书以至于年轻人都喜欢。
This is such an interesting book that all young people like it.
试比较:
There is so warm a house as we want to live in.
这里有如此暖的房子,我们都想住在里面。
so…as…如此的…
他有如此难的一个问题,我们没有人能解决。
He has so difficult a problem, as none of us can solve.
Simon accepted as much advice as Mr Yang gave to him.
as…as…像….一样…..
总结
非限制性定语从句
应注意以下几点:
一、非限制性定语从句通常不能用that
引导。
1. I like the book, which was bought
yesterday.
我喜欢这本书,这是昨天买的。
2. I like the book which/that was bought
yesterday.
我喜欢昨天买的那本书。