I don't know why but John is being really difficult today.
https://www.ecenglish.com/learnenglish/lessons/confusing-words-being-and-been
Is "being" an action verb in present continuous?
If we remove "being", would the sentence be still grammatical and what would it mean?
Yes, "is being" is the present continuous tense of "be". We often use this pattern to talk about someone's behaviour. If you remove "being" then it is still grammatical, but it is not so clear that it means that he is behaving in a difficult way.
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Yes, "is being" is the present continuous tense of "be". We often use this pattern to talk about someone's behaviour. If you remove "being" then it is still grammatical, but it is not so clear that it means that he is behaving in a difficult way.