Question

it looks as if是什么从句

It's looks as if it is going to snow和It seems that ····分别是什么从句?为什么?
都有引导词.都有连系动词.怎么区别这两个是什么从句

Answer 1

it looks as if it is going to snow.这句中as if 引导的是表语从句
原因：as if 只能引导方式状语从句和表语从句这两类,look 为系动词,所以后面跟的从句就是表语从句了.
it seems that…中 that 引导的是主语从句
原因：it +不及物动词+that从句（其that引导的从句为主语从句）
如：It seems that… 似乎…
It happened that… 碰巧…