のを知っていますか => Do you know...? N4
かも[知「し」]れない => Might A, maybe A, perhaps A N3
Sentence Endings
気味 => -like; -looking; -looked; tending to ~ N2
に気がつく => to notice; to realize N4
のを忘れた => to forget; to leave carelessly; to be forgetful of; to forget about N4
気にもならない => it's no use; can't do N1
Evaluate
~ばよかった/~たらよかった/~ばよかったのに/~たらよかったのに => If only N3
せられたい => Please..., Let me... N3
Order
なれた => to be used to something N4
Repetition, habit
のだったら => If truly... N3
Description
のであった => So...(Exclamation) N2
Exclamatory
またの… => again, moreover, in addition N3
Necessity, obligation