掲示板 Forums -

This needs to be confirmed by someone who has more knowledge about grammar that I do, but from what I’ve read so far is that in past tense the construction for nouns are (Noun + だったかもしれない) and for Na-adjectives it’s (na-adjective + なのかもしれない)

退屈なのかもしれない & 病気だったかもしれない

Or am I misunderstanding things?

Right, got it.

I saw a sentence like 彼は病気なのかもしれない。so that confused me at one point.
Now I see that 病気なの actually function as a noun. So it makes sense now.

Thanks, added it in.

でしょう is the more polite form of だろう. They otherwise mean the same.

かもしれない is different, though. It imples much less certainty.

Compare with their English counterparts: でしょう/だろう = probably and かもしれない = maybe.