since two day ago和two day ago还是for two day相同?怎么区分
问题描述:
since two day ago和two day ago还是for two day相同?怎么区分
答
since 后面接具体的时间点,for接时间段,一般用于完成时态中。
two days ago只两天前,一般出现在一般过去时中。
答
two day ago 是一般过去式,另外两个是现在完成时,
答
since two days ago相当于for two days,常用于现在完成时态中two days ago 两天前,用于一般过去时.如The fish died two days ago .The fish has been dead since two days ago.The fish has been dead for two days....