I must chatter you must chatter he must chatter we must chatter you must chatter they must chatter
Forme en 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
Perfect
I must have chattered you must have chattered he must have chattered we must have chattered you must have chattered they must have chattered
Perfect en 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
Négation
Forme 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
Forme en 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
Perfect
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
Perfect en 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
Forme interrogative
Forme simple
must I chatter? must you chatter? must he chatter? must we chatter? must you chatter? must they chatter?
Forme en 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?
Perfect
must I have chattered? must you have chattered? must he have chattered? must we have chattered? must you have chattered? must they have chattered?
Perfect en 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?
Forme interro-négative
Forme 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?
Forme en 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?
Perfect
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?
Perfect en 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?