what's up? what's the trouble? what's wrong? what's the matter?四句话的区别.越具体越好.

问题描述:

what's up? what's the trouble? what's wrong? what's the matter?四句话的区别.越具体越好.

what's up?近来怎么样?
what's the trouble?出了什么麻烦事?
what's wrong?哪儿出错了?
what's the matter?发生什么事?