题目

a few hours earlier和a few hours ago的区别
在新概念第二册的Lesson7里,有这么一段话,A few hours earlier,someone had told the police that thieves would try to steal the diamonds中A few hours earlier为什么不能用a few hours ago替换呢?这俩个短语有什么区别,分别用在什么情况下,最好能多举几个例子.

提问时间：2021-03-04

答案

Too Late a few hours earlier,时间段和earlier 一起使用,是以过去或将来某一个时间点为准的一段时间以前 在本文中的意思可以扩展成下列句子 a few hours earlier than the thime when the detectives were waiting ...