I must linger you must linger he must linger we must linger you must linger they must linger
V-ing form
I must be lingering you must be lingering he must be lingering we must be lingering you must be lingering they must be lingering
Perfect
I must have lingered you must have lingered he must have lingered we must have lingered you must have lingered they must have lingered
V-ing perfect
I must have been lingering you must have been lingering he must have been lingering we must have been lingering you must have been lingering they must have been lingering
Negation
Simple form
I must not linger you must not linger he must not linger we must not linger you must not linger they must not linger
V-ing form
I must not be lingering you must not be lingering he must not be lingering we must not be lingering you must not be lingering they must not be lingering
Perfect
I must not have lingered you must not have lingered he must not have lingered we must not have lingered you must not have lingered they must not have lingered
V-ing perfect
I must not have been lingering you must not have been lingering he must not have been lingering we must not have been lingering you must not have been lingering they must not have been lingering
Interrogative form
Simple form
must I linger? must you linger? must he linger? must we linger? must you linger? must they linger?
V-ing form
must I be lingering? must you be lingering? must he be lingering? must we be lingering? must you be lingering? must they be lingering?
Perfect
must I have lingered? must you have lingered? must he have lingered? must we have lingered? must you have lingered? must they have lingered?
V-ing perfect
must I have been lingering? must you have been lingering? must he have been lingering? must we have been lingering? must you have been lingering? must they have been lingering?
Interro-negative form
Simple form
must I not linger? must you not linger? must he not linger? must we not linger? must you not linger? must they not linger?
V-ing form
must I not be lingering? must you not be lingering? must he not be lingering? must we not be lingering? must you not be lingering? must they not be lingering?
Perfect
must I not have lingered? must you not have lingered? must he not have lingered? must we not have lingered? must you not have lingered? must they not have lingered?
V-ing perfect
must I not have been lingering? must you not have been lingering? must he not have been lingering? must we not have been lingering? must you not have been lingering? must they not have been lingering?