I must remain you must remain he must remain we must remain you must remain they must remain
V-ing form
I must be remaining you must be remaining he must be remaining we must be remaining you must be remaining they must be remaining
Perfect
I must have remained you must have remained he must have remained we must have remained you must have remained they must have remained
V-ing perfect
I must have been remaining you must have been remaining he must have been remaining we must have been remaining you must have been remaining they must have been remaining
Negation
Simple form
I must not remain you must not remain he must not remain we must not remain you must not remain they must not remain
V-ing form
I must not be remaining you must not be remaining he must not be remaining we must not be remaining you must not be remaining they must not be remaining
Perfect
I must not have remained you must not have remained he must not have remained we must not have remained you must not have remained they must not have remained
V-ing perfect
I must not have been remaining you must not have been remaining he must not have been remaining we must not have been remaining you must not have been remaining they must not have been remaining
Interrogative form
Simple form
must I remain? must you remain? must he remain? must we remain? must you remain? must they remain?
V-ing form
must I be remaining? must you be remaining? must he be remaining? must we be remaining? must you be remaining? must they be remaining?
Perfect
must I have remained? must you have remained? must he have remained? must we have remained? must you have remained? must they have remained?
V-ing perfect
must I have been remaining? must you have been remaining? must he have been remaining? must we have been remaining? must you have been remaining? must they have been remaining?
Interro-negative form
Simple form
must I not remain? must you not remain? must he not remain? must we not remain? must you not remain? must they not remain?
V-ing form
must I not be remaining? must you not be remaining? must he not be remaining? must we not be remaining? must you not be remaining? must they not be remaining?
Perfect
must I not have remained? must you not have remained? must he not have remained? must we not have remained? must you not have remained? must they not have remained?
V-ing perfect
must I not have been remaining? must you not have been remaining? must he not have been remaining? must we not have been remaining? must you not have been remaining? must they not have been remaining?