May, might (Unit 29,30)

We use may and might to say that something is possible.. 

-|-	He may be in his office.
<-|	She might not have known about it.
|->	It might rain this afternoon.

+	I may go to Italy.
?	May I come in?
-	Jack might not be in his office.

We also use should to say something is not right or not what we expect.
For the past, we use may have done and might have done.
We use may or might to talk about possible happenings or possible actions in the future.

We use may/might as well to say that we should do something but only because there is no reason not do it and because there is nothing better to do.

-|-	We might as well watch TV then. There's nothing else to do.