I've got a little problem with using modal verbs such as can/could, may/might. Could you help me out, please
For example, what's the chief difference between following sentences:
1. He may have had her phone number
2. He may have her phone number
3. He might have had her phone number
4. He might have her phone number
can I change one of these sentences to
"It's possible that he had her phone" or "It's probable that he had her phone"
thanks in advance!!!