It looked as if it was going to rain.请问为什么不能在as前加上一个that?
问题描述：
It looked as if it was going to rain.
请问为什么不能在as前加上一个that?
答
it looked that···一种形式
It looked as if ···另一种形式
貌似都能表好像
答
It looked as if看起来像……固定搭配
答
看起来 好像要下雨了
答
look 在这里是一个系动词 as if 在系动词后引导表语从句。