a week ago 和since last week 的区别

问题描述:

a week ago 和since last week 的区别
1个回答 分类:英语 2014-10-19

问题解答:

我来补答
a week ago 一周前,用于一般过去时.
since last week自从上周以来,用于现在完成时
He came here a week ago .
He has been here since last week .
再问: 有个问题是甘的 我不是很明点解选b hao long did you get ill? ----------------- a a week b a week ago c since last week 应该意思上c才对的
再答: 问句是一般过去时,回答也应该用一般过去时,故B对。
 
 
展开全文阅读
剩余:2000