The number of senior high school students is increasing...
问题描述：
The number of senior high school students is increasing...
The number of senior high school students is increasing,as is mentioned above.
请问这个句子后面的部分 as is mentioned above 为什么没有it?
答
这里是as单独引导定语从句,先行词可以是一个词,也可以是一个句子或短语.例如：(1) She is late, as is often the case.她迟到了,这是经常的事.(先行词是整个主句)(2) To shut your eyes to facts, as many of yo...