It was quite a long time before he realized his mistake.before he realized his mistake是什么从句

分类: 作业答案 • 2021-12-20 02:57:27

问题描述：

It was quite a long time before he realized his mistake.
before he realized his mistake是什么从句

答

当他认识到自己的错误时，已经过相当长的时间。

答

状语从句

答

很长时间以后他才意识到自己的错误.
It is/was +时间段＋before．．．．多长时间以后,才...
it is／was not＋时间段＋before．．．多长时间以后,就.
时间状语