as 用法详解 as 用法详解1 用作连词,表示让步 ,要用于倒装句,且倒装后位于句首的名词通常不用冠词 。如:
Child as[though]he was, he did quite well. 他虽是个孩子,但已干得很不错。
2. 用作关系代词,主要用法有二。如:
用在such, same, as等之后,引导限制性定语从句。如:
This is thesame watch as I lost. 这块表跟我丢失的那块一样。
Such men as heard of him praised him. 听说过他的人都赞扬他。
单独用作关系代词,引导非限制性定语从句,可放在主句之前 或之后 ,且主从句之间一般要用逗号隔开。如:
He was absent, as is often the case. 他缺席了,这是常有的事。
As was expected, he succeeded at last. 正如我们所料,他终于成功了。
3. 用来表示目的,下面两种句子结构都可以。如:
仔细写以便把每句话都写清楚。
正:Write carefully so as to make every sentence clear.
正:Write so carefully as to make every sentence clear.
4. 在正式文体 中,as后可用倒装语序表示也一样这类意思 。如:
He travelled agreat deal, as did most of his friends. 他去过许多地方旅游,他的多数朋友也是一样。
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