I could emphasize you could emphasize he could emphasize we could emphasize you could emphasize they could emphasize
V-ing form
I could be emphasizing you could be emphasizing he could be emphasizing we could be emphasizing you could be emphasizing they could be emphasizing
Perfect
I could have emphasized you could have emphasized he could have emphasized we could have emphasized you could have emphasized they could have emphasized
V-ing perfect
I could have been emphasizing you could have been emphasizing he could have been emphasizing we could have been emphasizing you could have been emphasizing they could have been emphasizing
Negation
Simple form
I could not emphasize you could not emphasize he could not emphasize we could not emphasize you could not emphasize they could not emphasize
V-ing form
I could not be emphasizing you could not be emphasizing he could not be emphasizing we could not be emphasizing you could not be emphasizing they could not be emphasizing
Perfect
I could not have emphasized you could not have emphasized he could not have emphasized we could not have emphasized you could not have emphasized they could not have emphasized
V-ing perfect
I could not have been emphasizing you could not have been emphasizing he could not have been emphasizing we could not have been emphasizing you could not have been emphasizing they could not have been emphasizing
Interrogative form
Simple form
could I emphasize? could you emphasize? could he emphasize? could we emphasize? could you emphasize? could they emphasize?
V-ing form
could I be emphasizing? could you be emphasizing? could he be emphasizing? could we be emphasizing? could you be emphasizing? could they be emphasizing?
Perfect
could I have emphasized? could you have emphasized? could he have emphasized? could we have emphasized? could you have emphasized? could they have emphasized?
V-ing perfect
could I have been emphasizing? could you have been emphasizing? could he have been emphasizing? could we have been emphasizing? could you have been emphasizing? could they have been emphasizing?
Interro-negative form
Simple form
could I not emphasize? could you not emphasize? could he not emphasize? could we not emphasize? could you not emphasize? could they not emphasize?
V-ing form
could I not be emphasizing? could you not be emphasizing? could he not be emphasizing? could we not be emphasizing? could you not be emphasizing? could they not be emphasizing?
Perfect
could I not have emphasized? could you not have emphasized? could he not have emphasized? could we not have emphasized? could you not have emphasized? could they not have emphasized?
V-ing perfect
could I not have been emphasizing? could you not have been emphasizing? could he not have been emphasizing? could we not have been emphasizing? could you not have been emphasizing? could they not have been emphasizing?