It is two weeks since I have seen him.( have seen-- saw)谁能够帮我讲出一个所以然?麻烦题目看清啊——就是把HAVE SEEN改成了SAW 这是为什么？什么理由？
问题描述：
It is two weeks since I have seen him.( have seen-- saw)
谁能够帮我讲出一个所以然?
麻烦题目看清啊——就是把HAVE SEEN改成了SAW 这是为什么？什么理由？
答
因为有since所以用完成时态
答
这句话本身有问题吧，应该
——It has been 2 weeks since I saw him.
答
since引导的状语从句必用一般过去时态.例如,Two years has been since I came to Shanghai.