did not 跟didn't有什么区别?

did not 跟didn't有什么区别? 请问：Didn't you cook?和Did you not cook.意思有什么区别? don't 跟do not有什么区别吗? They did not pay any attention 和They did't notice him有什么区别吗 请问did,didn't和have,haven't有什么区别吗?它们都是代表过去的,比如I didn't finish used not do和didn't used to do有什么区别 didn‘t be 与weren't有什么区别 didn't和doesn't有什么区别 didn't和haven't什么有区别 Did you play basketball答案有No,I‘m not有No,I didn’t还有No,it isn‘ 看美剧英剧经常碰到“我什么都没说”I did not say nothing,这句话和I didn't say anyt why not,why didn't,why couldn't的区别