can’t 和 won’t didn’t doesn’t 的区别是啥

can’t 和 won’t didn’t doesn’t 的区别是啥 mustn't/can't/won't/shan't的用法和区别,请详细一点. doesn't work 与 won't work 的区别 didn't和doesn't有什么区别 My enter key doesn`t/won`t work.两句中doesn`t won`t的区别,请举例说明 haven't和 didn't的区别 didn't 和couldn't的区别, won' be和can't be的区别 isn't aren't don't doesn't的区别! can`t 和musn`t的区别 It doesn't matter__he won't come don`t和doesn`t与can`t怎么分辨?