求 初中英语一般疑问句否定开头如何回答

题目

求 初中英语一般疑问句否定开头如何回答
如果一题 didn't i tell you how to do it?如何回答呢 是否 否定开头 就要用肯定? yes you did/ no you didn't 还是yes you did't /no you did

答案

如果是告诉了
Yes,you did.
如果没告诉
No,you didn't