had better 与might as well 区别是什么?

had better 与might as well 区别是什么? 问一下had better和might as well的区别? as well 与as well as的区别是什么? May as well和might as well的区别 as well与too的区别是什么? as well 与as well as区别 as better as和as well as有什么区别? might as well not... might as well should better与had better的区别 May might as well 的区别?请附例句. 英文求教may as well 跟might as well有什么区别?