Nothing new.I saw it with my parents on the first day为什么要用I saw it 而不是 I have seen it
问题描述：
Nothing new.I saw it with my parents on the first day
为什么要用I saw it 而不是 I have seen it
答
on the first day是过去的某天,所以用一般过去时.have seen 是从过去的某天一直到现在还在持续的动作,后面一般有for说明持续时间.如：I've been there for three days.