I must civilize you must civilize he must civilize we must civilize you must civilize they must civilize
V-ing form
I must be civilizing you must be civilizing he must be civilizing we must be civilizing you must be civilizing they must be civilizing
Perfect
I must have civilized you must have civilized he must have civilized we must have civilized you must have civilized they must have civilized
V-ing perfect
I must have been civilizing you must have been civilizing he must have been civilizing we must have been civilizing you must have been civilizing they must have been civilizing
Negation
Simple form
I must not civilize you must not civilize he must not civilize we must not civilize you must not civilize they must not civilize
V-ing form
I must not be civilizing you must not be civilizing he must not be civilizing we must not be civilizing you must not be civilizing they must not be civilizing
Perfect
I must not have civilized you must not have civilized he must not have civilized we must not have civilized you must not have civilized they must not have civilized
V-ing perfect
I must not have been civilizing you must not have been civilizing he must not have been civilizing we must not have been civilizing you must not have been civilizing they must not have been civilizing
Interrogative form
Simple form
must I civilize? must you civilize? must he civilize? must we civilize? must you civilize? must they civilize?
V-ing form
must I be civilizing? must you be civilizing? must he be civilizing? must we be civilizing? must you be civilizing? must they be civilizing?
Perfect
must I have civilized? must you have civilized? must he have civilized? must we have civilized? must you have civilized? must they have civilized?
V-ing perfect
must I have been civilizing? must you have been civilizing? must he have been civilizing? must we have been civilizing? must you have been civilizing? must they have been civilizing?
Interro-negative form
Simple form
must I not civilize? must you not civilize? must he not civilize? must we not civilize? must you not civilize? must they not civilize?
V-ing form
must I not be civilizing? must you not be civilizing? must he not be civilizing? must we not be civilizing? must you not be civilizing? must they not be civilizing?
Perfect
must I not have civilized? must you not have civilized? must he not have civilized? must we not have civilized? must you not have civilized? must they not have civilized?
V-ing perfect
must I not have been civilizing? must you not have been civilizing? must he not have been civilizing? must we not have been civilizing? must you not have been civilizing? must they not have been civilizing?