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