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 mustn't dine you mustn't dine he mustn't dine we mustn't dine you mustn't dine they mustn't dine
V-ing form
I mustn't be dining you mustn't be dining he mustn't be dining we mustn't be dining you mustn't be dining they mustn't be dining
Perfect
I mustn't have dined you mustn't have dined he mustn't have dined we mustn't have dined you mustn't have dined they mustn't have dined
V-ing perfect
I mustn't have been dining you mustn't have been dining he mustn't have been dining we mustn't have been dining you mustn't have been dining they mustn't 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
mustn't I dine? mustn't you dine? mustn't he dine? mustn't we dine? mustn't you dine? mustn't they dine?
V-ing form
mustn't I be dining? mustn't you be dining? mustn't he be dining? mustn't we be dining? mustn't you be dining? mustn't they be dining?
Perfect
mustn't I have dined? mustn't you have dined? mustn't he have dined? mustn't we have dined? mustn't you have dined? mustn't they have dined?
V-ing perfect
mustn't I have been dining? mustn't you have been dining? mustn't he have been dining? mustn't we have been dining? mustn't you have been dining? mustn't they have been dining?