I must continue you must continue he must continue we must continue you must continue they must continue
V-ing form
I must be continuing you must be continuing he must be continuing we must be continuing you must be continuing they must be continuing
Perfect
I must have continued you must have continued he must have continued we must have continued you must have continued they must have continued
V-ing perfect
I must have been continuing you must have been continuing he must have been continuing we must have been continuing you must have been continuing they must have been continuing
Negation
Simple form
I mustn't continue you mustn't continue he mustn't continue we mustn't continue you mustn't continue they mustn't continue
V-ing form
I mustn't be continuing you mustn't be continuing he mustn't be continuing we mustn't be continuing you mustn't be continuing they mustn't be continuing
Perfect
I mustn't have continued you mustn't have continued he mustn't have continued we mustn't have continued you mustn't have continued they mustn't have continued
V-ing perfect
I mustn't have been continuing you mustn't have been continuing he mustn't have been continuing we mustn't have been continuing you mustn't have been continuing they mustn't have been continuing
Interrogative form
Simple form
must I continue? must you continue? must he continue? must we continue? must you continue? must they continue?
V-ing form
must I be continuing? must you be continuing? must he be continuing? must we be continuing? must you be continuing? must they be continuing?
Perfect
must I have continued? must you have continued? must he have continued? must we have continued? must you have continued? must they have continued?
V-ing perfect
must I have been continuing? must you have been continuing? must he have been continuing? must we have been continuing? must you have been continuing? must they have been continuing?
Interro-negative form
Simple form
mustn't I continue? mustn't you continue? mustn't he continue? mustn't we continue? mustn't you continue? mustn't they continue?
V-ing form
mustn't I be continuing? mustn't you be continuing? mustn't he be continuing? mustn't we be continuing? mustn't you be continuing? mustn't they be continuing?
Perfect
mustn't I have continued? mustn't you have continued? mustn't he have continued? mustn't we have continued? mustn't you have continued? mustn't they have continued?
V-ing perfect
mustn't I have been continuing? mustn't you have been continuing? mustn't he have been continuing? mustn't we have been continuing? mustn't you have been continuing? mustn't they have been continuing?