I must remain you must remain she must remain we must remain you must remain they must remain
V-ing form
I must be remaining you must be remaining she must be remaining we must be remaining you must be remaining they must be remaining
Perfect
I must have remained you must have remained she 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 she 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 she 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 she 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 she 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 she 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 she remain? must we remain? must you remain? must they remain?
V-ing form
must I be remaining? must you be remaining? must she be remaining? must we be remaining? must you be remaining? must they be remaining?
Perfect
must I have remained? must you have remained? must she 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 she 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 she 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 she 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 she 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 she not have been remaining? must we not have been remaining? must you not have been remaining? must they not have been remaining?