He said that he had bought the jacket —— three days before 还是 thr_英语解答

He said that he had bought the jacket —— three days before 还是 three days ago ,为什么?

人气：129 ℃　时间：2019-10-03 22:59:44

解答

前者three days before 对
从现在往回算多少时间以前用【.ago】,和一般过去时连用
从过去往回算多少时间以前用【.before】和过去完成时连用