you know what I would really appreciate it if you didn't tell your Dad about.这句话是过去式吗?为什么didn't 但是后面却是tell
问题描述：
you know what I would really appreciate it if you didn't tell your Dad about.这句话是过去式吗?为什么didn't 但是后面却是tell
答
if you didn`t tell your dad about 这部分是过去式,didn`t 作为否定后面接动词原形 tell
其实这就是一个过去式的否定形式.
它是不是过去式体现在didn`t 上,如果用doesn`t 就是一般现在时了.后面的动词都是用原形.