Let us suppose we have such a sentence:
John says Marry may have fallen ill.
How should we change the sentence if we talk about the past? Is it correct?
John said Marry might have fallen ill.
And what about
And also I am curious about
might in the past, that is
may, but with less certainty. That is
might have been in the present expresses lesser probability than
may. Can we convey this subtlety in the past somehow?