After you're at the restaurant, maybe the waiter brings you something that you didn't ask for.

到了餐厅以后，服务员却上了一份你们没点的菜。

I didn't 课堂 - SpeakingMax英语口语达人

And it's--you might think, " "All right. The life of a waiter is not the worst thing in the world."

而这时，你可能会想，“好吧，侍应生的生活又不是这世上最坏的事情“

耶鲁公开课 - 死亡课程节选

You can explain to the waiter that he has made a mistake by using the "I didn't" pattern.

你想跟服务员解释，他弄错了。你就可以使用“I didn't”句型。

I didn't 课堂 - SpeakingMax英语口语达人

Matter of fact, it was right up the street here that I was a waiter

实际上，就是在这条街上做服务生，

我就是超人 - SpeakingMax英语口语达人