didn't doesn't don't 怎么用
问题描述：
didn't doesn't don't 怎么用
答
过去时
一般现在时第三人称
一般现在时第一人称
答
时态不一样
答
didn't 是 don't 的过去时态，don't 一般现在时，而 doesn't是第三人称单数，比如，
I don't know. she/he doesn't know.
而 didn't 句子中一般有表过去时间词， he didn't go yesterday.
答
didn't适用于过去时
doesn't用于现在是一般第三人称
don't 用于第一人称，一般是现在是。
答
didn't 是用在过去式的 例如,i didn't read book yesterday 我昨天没有读书
doesn't 前面用第三人称单数 she doesn't read book now 现在她没有读书
don't 前面是第一二人称单数 i或者 you