I must fire you must fire he must fire we must fire you must fire they must fire
Forma con V-ing
I must be firing you must be firing he must be firing we must be firing you must be firing they must be firing
Perfecto
I must have fired you must have fired he must have fired we must have fired you must have fired they must have fired
Perfecto con V-ing
I must have been firing you must have been firing he must have been firing we must have been firing you must have been firing they must have been firing
Negación
Forma simple
I mustn't fire you mustn't fire he mustn't fire we mustn't fire you mustn't fire they mustn't fire
Forma con V-ing
I mustn't be firing you mustn't be firing he mustn't be firing we mustn't be firing you mustn't be firing they mustn't be firing
Perfecto
I mustn't have fired you mustn't have fired he mustn't have fired we mustn't have fired you mustn't have fired they mustn't have fired
Perfecto con V-ing
I mustn't have been firing you mustn't have been firing he mustn't have been firing we mustn't have been firing you mustn't have been firing they mustn't have been firing
Forma interrogativa
Forma simple
must I fire? must you fire? must he fire? must we fire? must you fire? must they fire?
Forma con V-ing
must I be firing? must you be firing? must he be firing? must we be firing? must you be firing? must they be firing?
Perfecto
must I have fired? must you have fired? must he have fired? must we have fired? must you have fired? must they have fired?
Perfecto con V-ing
must I have been firing? must you have been firing? must he have been firing? must we have been firing? must you have been firing? must they have been firing?
Forma interro-negativa
Forma simple
mustn't I fire? mustn't you fire? mustn't he fire? mustn't we fire? mustn't you fire? mustn't they fire?
Forma con V-ing
mustn't I be firing? mustn't you be firing? mustn't he be firing? mustn't we be firing? mustn't you be firing? mustn't they be firing?
Perfecto
mustn't I have fired? mustn't you have fired? mustn't he have fired? mustn't we have fired? mustn't you have fired? mustn't they have fired?
Perfecto con V-ing
mustn't I have been firing? mustn't you have been firing? mustn't he have been firing? mustn't we have been firing? mustn't you have been firing? mustn't they have been firing?