needn't 与mustn't的区别?

needn't 与mustn't的区别? mustn't与needn't的用法区别 请问英语中couldn't wouldn't needn't mustn't的区别与用法? mustn't needn't needn't和 mustn't和shouldn't和ought't的区别? mustn't needn't 有什么区别么? mustn`t 和needn`t的区别The wether is nice.You ____take the umbrella.A needn`t B mustn`t may not与mustn't的区别 may not与mustn't的区别? can,can't,must,mustn't,needn't,be allowed to,have to,don't have to的区别 may can must need的区别及may not ,can't,mustn't,needn't的区别? must,need,mustn't,needn't的用法? 英语must和needmust引导的一般疑问句用 needn't作否定回答,为什么不用mustn't?带有must't的陈述句又与疑问句回答中的needn't有什么区别哪? may.must.mustn't的意思may,must,mustn't,need,needn't,can,can't的意思是什么?之间有什么区别? mustn't/needn't/shouldn't有什么区别?请举一些例句，方便我的理解， may not/can't/couldn't/needn't/mustn't举例区别意思和用法 can’t mustn’t shouldn’t needn’t 在用法上怎么区别? can’t mustn’t shouldn’t needn’t 在用法上怎么区别?