I'd be apologizing you'd be apologizing he'd be apologizing we'd be apologizing you'd be apologizing they'd be apologizing
Perfect
I should've apologized you should've apologized he should've apologized we should've apologized you should've apologized they should've apologized
V-ing perfect
I should've been apologizing you should've been apologizing he should've been apologizing we should've been apologizing you should've been apologizing they should've been apologizing
Negation
Simple form
I shouldn't apologize you shouldn't apologize he shouldn't apologize we shouldn't apologize you shouldn't apologize they shouldn't apologize
V-ing form
I shouldn't be apologizing you shouldn't be apologizing he shouldn't be apologizing we shouldn't be apologizing you shouldn't be apologizing they shouldn't be apologizing
Perfect
I shouldn't have apologized you shouldn't have apologized he shouldn't have apologized we shouldn't have apologized you shouldn't have apologized they shouldn't have apologized
V-ing perfect
I shouldn't have been apologizing you shouldn't have been apologizing he shouldn't have been apologizing we shouldn't have been apologizing you shouldn't have been apologizing they shouldn't have been apologizing
Interrogative form
Simple form
should I apologize? should you apologize? should he apologize? should we apologize? should you apologize? should they apologize?
V-ing form
should I be apologizing? should you be apologizing? should he be apologizing? should we be apologizing? should you be apologizing? should they be apologizing?
Perfect
should I have apologized? should you have apologized? should he have apologized? should we have apologized? should you have apologized? should they have apologized?
V-ing perfect
should I have been apologizing? should you have been apologizing? should he have been apologizing? should we have been apologizing? should you have been apologizing? should they have been apologizing?
Interro-negative form
Simple form
shouldn't I apologize? shouldn't you apologize? shouldn't he apologize? shouldn't we apologize? shouldn't you apologize? shouldn't they apologize?
V-ing form
shouldn't I be apologizing? shouldn't you be apologizing? shouldn't he be apologizing? shouldn't we be apologizing? shouldn't you be apologizing? shouldn't they be apologizing?
Perfect
shouldn't I have apologized? shouldn't you have apologized? shouldn't he have apologized? shouldn't we have apologized? shouldn't you have apologized? shouldn't they have apologized?
V-ing perfect
shouldn't I have been apologizing? shouldn't you have been apologizing? shouldn't he have been apologizing? shouldn't we have been apologizing? shouldn't you have been apologizing? shouldn't they have been apologizing?