OK Sir, I've understand that "might" uses for past and "may" uses for present. But I'm still unclear that why we use "be" with both may and might? What's "BE"? Why we use it? Where it has come from?
Here are some examples:
Talk about May first:
You may come if you wish? Why we didn't use be with may here?
This coat may be David's? Why we used be with may here?
How old may she be? Why we used be with may here?
May you both be very happy. Why we used be here again?
Now talk about Might:
Might I suggest another time. Here are we talking about past? Why might came here and why be didn't come here?
That might be our taxi. So is this sentence using past? and why it's not using be with it?
He might just possible have lost his keys. So is this MIGHT talking about past here? and why it's not using be here?
Please explain me all this. I'll be grateful to you.