We had some shoes like those a month ago.这句话已经用了a month,后面为啥还加ago?
问题描述：
We had some shoes like those a month ago.这句话已经用了a month,后面为啥还加ago?
答
时间+ago 【.时间前】
a month ago 一个月前还有其它表示方式吗a month ago 【以现在为起点】
a month before 【以过去为起点】