I can apologize you can apologize he can apologize we can apologize you can apologize they can apologize
V-ing form
I can be apologizing you can be apologizing he can be apologizing we can be apologizing you can be apologizing they can be apologizing
Perfect
I can have apologized you can have apologized he can have apologized we can have apologized you can have apologized they can have apologized
V-ing perfect
I can have been apologizing you can have been apologizing he can have been apologizing we can have been apologizing you can have been apologizing they can have been apologizing
Negation
Simple form
I cannot apologize you cannot apologize he cannot apologize we cannot apologize you cannot apologize they cannot apologize
V-ing form
I cannot be apologizing you cannot be apologizing he cannot be apologizing we cannot be apologizing you cannot be apologizing they cannot be apologizing
Perfect
I cannot have apologized you cannot have apologized he cannot have apologized we cannot have apologized you cannot have apologized they cannot have apologized
V-ing perfect
I cannot have been apologizing you cannot have been apologizing he cannot have been apologizing we cannot have been apologizing you cannot have been apologizing they cannot have been apologizing
Interrogative form
Simple form
can I apologize? can you apologize? can he apologize? can we apologize? can you apologize? can they apologize?
V-ing form
can I be apologizing? can you be apologizing? can he be apologizing? can we be apologizing? can you be apologizing? can they be apologizing?
Perfect
can I have apologized? can you have apologized? can he have apologized? can we have apologized? can you have apologized? can they have apologized?
V-ing perfect
can I have been apologizing? can you have been apologizing? can he have been apologizing? can we have been apologizing? can you have been apologizing? can they have been apologizing?
Interro-negative form
Simple form
can I not apologize? can you not apologize? can he not apologize? can we not apologize? can you not apologize? can they not apologize?
V-ing form
can I not be apologizing? can you not be apologizing? can he not be apologizing? can we not be apologizing? can you not be apologizing? can they not be apologizing?
Perfect
can I not have apologized? can you not have apologized? can he not have apologized? can we not have apologized? can you not have apologized? can they not have apologized?
V-ing perfect
can I not have been apologizing? can you not have been apologizing? can he not have been apologizing? can we not have been apologizing? can you not have been apologizing? can they not have been apologizing?