I must dine you must dine he must dine we must dine you must dine they must dine
V-ing form
I must be dining you must be dining he must be dining we must be dining you must be dining they must be dining
Perfect
I must have dined you must have dined he must have dined we must have dined you must have dined they must have dined
V-ing perfect
I must have been dining you must have been dining he must have been dining we must have been dining you must have been dining they must have been dining
Negation
Simple form
I must not dine you must not dine he must not dine we must not dine you must not dine they must not dine
V-ing form
I must not be dining you must not be dining he must not be dining we must not be dining you must not be dining they must not be dining
Perfect
I must not have dined you must not have dined he must not have dined we must not have dined you must not have dined they must not have dined
V-ing perfect
I must not have been dining you must not have been dining he must not have been dining we must not have been dining you must not have been dining they must not have been dining
Interrogative form
Simple form
must I dine? must you dine? must he dine? must we dine? must you dine? must they dine?
V-ing form
must I be dining? must you be dining? must he be dining? must we be dining? must you be dining? must they be dining?
Perfect
must I have dined? must you have dined? must he have dined? must we have dined? must you have dined? must they have dined?
V-ing perfect
must I have been dining? must you have been dining? must he have been dining? must we have been dining? must you have been dining? must they have been dining?
Interro-negative form
Simple form
must I not dine? must you not dine? must he not dine? must we not dine? must you not dine? must they not dine?
V-ing form
must I not be dining? must you not be dining? must he not be dining? must we not be dining? must you not be dining? must they not be dining?
Perfect
must I not have dined? must you not have dined? must he not have dined? must we not have dined? must you not have dined? must they not have dined?
V-ing perfect
must I not have been dining? must you not have been dining? must he not have been dining? must we not have been dining? must you not have been dining? must they not have been dining?