I must average you must average he must average we must average you must average they must average
V-ing form
I must be averaging you must be averaging he must be averaging we must be averaging you must be averaging they must be averaging
Perfect
I must have averaged you must have averaged he must have averaged we must have averaged you must have averaged they must have averaged
V-ing perfect
I must have been averaging you must have been averaging he must have been averaging we must have been averaging you must have been averaging they must have been averaging
Negation
Simple form
I must not average you must not average he must not average we must not average you must not average they must not average
V-ing form
I must not be averaging you must not be averaging he must not be averaging we must not be averaging you must not be averaging they must not be averaging
Perfect
I must not have averaged you must not have averaged he must not have averaged we must not have averaged you must not have averaged they must not have averaged
V-ing perfect
I must not have been averaging you must not have been averaging he must not have been averaging we must not have been averaging you must not have been averaging they must not have been averaging
Interrogative form
Simple form
must I average? must you average? must he average? must we average? must you average? must they average?
V-ing form
must I be averaging? must you be averaging? must he be averaging? must we be averaging? must you be averaging? must they be averaging?
Perfect
must I have averaged? must you have averaged? must he have averaged? must we have averaged? must you have averaged? must they have averaged?
V-ing perfect
must I have been averaging? must you have been averaging? must he have been averaging? must we have been averaging? must you have been averaging? must they have been averaging?
Interro-negative form
Simple form
must I not average? must you not average? must he not average? must we not average? must you not average? must they not average?
V-ing form
must I not be averaging? must you not be averaging? must he not be averaging? must we not be averaging? must you not be averaging? must they not be averaging?
Perfect
must I not have averaged? must you not have averaged? must he not have averaged? must we not have averaged? must you not have averaged? must they not have averaged?
V-ing perfect
must I not have been averaging? must you not have been averaging? must he not have been averaging? must we not have been averaging? must you not have been averaging? must they not have been averaging?