five years before 用法和five years ago的区别
问题描述:
five years before 用法和five years ago的区别
答
用before时句子要用完成时,ago只能用于一般过去式
答
ago表示从现在起,若干时间之前,常与一般过去时连用,不能与完成时连用。before 是从过去某一时刻起,若干时间以前,常与过去完成时连用
答
before 以过去某时为起点的.之前
ago 以现在为起点的.之前
he told me that he had finished his university five years before.(现在算起,毕业六年了)
he tells me that he has been in the factory five years ago(入厂五年了)
供参考.