I must sport you must sport he must sport we must sport you must sport they must sport
V-ing form
I must be sporting you must be sporting he must be sporting we must be sporting you must be sporting they must be sporting
Perfect
I must have sported you must have sported he must have sported we must have sported you must have sported they must have sported
V-ing perfect
I must have been sporting you must have been sporting he must have been sporting we must have been sporting you must have been sporting they must have been sporting
Negation
Simple form
I must not sport you must not sport he must not sport we must not sport you must not sport they must not sport
V-ing form
I must not be sporting you must not be sporting he must not be sporting we must not be sporting you must not be sporting they must not be sporting
Perfect
I must not have sported you must not have sported he must not have sported we must not have sported you must not have sported they must not have sported
V-ing perfect
I must not have been sporting you must not have been sporting he must not have been sporting we must not have been sporting you must not have been sporting they must not have been sporting
Interrogative form
Simple form
must I sport? must you sport? must he sport? must we sport? must you sport? must they sport?
V-ing form
must I be sporting? must you be sporting? must he be sporting? must we be sporting? must you be sporting? must they be sporting?
Perfect
must I have sported? must you have sported? must he have sported? must we have sported? must you have sported? must they have sported?
V-ing perfect
must I have been sporting? must you have been sporting? must he have been sporting? must we have been sporting? must you have been sporting? must they have been sporting?
Interro-negative form
Simple form
must I not sport? must you not sport? must he not sport? must we not sport? must you not sport? must they not sport?
V-ing form
must I not be sporting? must you not be sporting? must he not be sporting? must we not be sporting? must you not be sporting? must they not be sporting?
Perfect
must I not have sported? must you not have sported? must he not have sported? must we not have sported? must you not have sported? must they not have sported?
V-ing perfect
must I not have been sporting? must you not have been sporting? must he not have been sporting? must we not have been sporting? must you not have been sporting? must they not have been sporting?