1、may as well 不妨，还是
You may as well tell us now – we’ll find out sooner or later. 你还是现在就告诉我们吧——我们迟早会发现的。
2、may well 很可能（well用来加强语气）
Your job may well involve some travelling (=it is fairly likely). 你的工作很可能涉及到旅行。
3、may possibly 可能（possibly用来弱化语气）
It may possibly be true．也许是真的。
4、may…but 虽然……但是……（may表达“让步”含义）
I may be slow, but at least I don’t make stupid mistakes. 我虽然慢，但是至少不会犯愚蠢的错误.