didn't和doesn't有什么区别

didn't和doesn't有什么区别
didn't和doesn't有什么区别

didn't和doesn't有什么区别
didn't 是对任何人称过去时的否定 比如：He didn't like it .就是说他以前不喜欢它.You didn't dofinish your homewok .你之前没有完成你的作业.
doesn't是对第三人称现在时的否定,也可以是对喜好,习惯的否定 比如：She doesn‘t like walk
可以是说她现在不喜欢不行 也可是说她一直都不喜欢步行.