如何理解区分don't和didn't呢 don't和didn't的意思

Don't和Didn't都表示否定

那怎么区分呢

很简单

Don't你可以理解为“不”

I don't work.我不工作

I don't study.我不学习

Didn't你可以理解为“没有”

I didn't work.我没工作

I didn't study.我没学习