1. 引導(dǎo)限制性定語從句和非限制性定語從句
(1)as多與such 或the same連用,可以代替先行詞是人或物的名詞。
(2)as 也可單獨使用,引導(dǎo)非限制性定語從句,作用相當(dāng)于which。例如:
The elephant's nose is like a snake, as anybody can see.
(3)the same… that與 the same …as在意思上是不同的。
2.As引導(dǎo)的非限制性定語從句的位置
as引導(dǎo)的非限制性定語從句位置較靈活,可以位于主句前面.中間或后面,一般用逗號與主句隔開,但which所引導(dǎo)的非限制性定語從句只能放在主句之后。例如:
(1) As is expected, the England team won the football match.
(2) The earth runs around the sun, as is known by everyone.
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