题目内容：

didn't doesn't don't 怎么用

优质解答

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