everyone'having a good time 为什么用aren't they 不用everyone'having a good time 为什么用aren't they 不用doesn't

问题描述:

everyone'having a good time 为什么用aren't they 不用
everyone'having a good time 为什么用aren't they 不用doesn't

因为是人做主语啊

因为那是一般现在时,而不是一般进行时.