4、s, such„as, so„as, as„as„等结构,也就是说,先行词之前一旦出现same, such, so, as这些词时,而先行词的后面又跟着一个从句,这时就要考虑是不是要用as作为关系词来连接这个词和这个句子。 例如: No period in history has had as many important changes as have taken place in the past century. (as 作主语) It is so easy a book as every schoolboy can read. (as作宾语) 注意:(1)关系代词as在限制
5、性定语从句时,在从句里做宾语时,绝不能省略。为什么我要让大家注意呢?因为大家会联想到that和which引导定语从句,做从句里的宾语时可以省略。但是,大家要记住,我们今天讲的是as引导的定语从句,as在定语从句里做宾语时,是绝不能省略的。没有为什么,这就是语言的习惯。 Nowadays, women can receive the same pay as men can receive. 这句话里面,as就绝不能省略。 而这句话 (2)刚说过的这个例子大家可能已经注意到the same „ as 和the same „ that这两个结构了。当先行词被 the same 所修饰时,关
6、系词既可以用 as,也可以用 that,那么这两者又有什么区别呢?在表示具体事物时,有时两者有一定的区别。一般说来,表示同一种类多用 as,表示同一事物多用 that,来看个例子: This is the same instrument as I used yesterday. 这台仪器跟我昨天用过的那台一样。 但是表示抽象概念时,同种类和同一事物是没有绝对区别的,所以两个词可换用,请看例句 I have the same opinion as / that you have. 2. as引导非限制性定语从句。as在定语从句中作主语、表语或宾语。as
7、代指整个主句,而as引导的这个定语从句是用来补充说明整个主句的,可以放在主句之前或者之后。 例如: As we all know, he studies very hard.(as代整个句子,作宾语) 也可说 He studies very hard, as we all know. As is known to all, he is the best student in our class.(as代整个句子,作主语) 也可说