I must intervene you must intervene he must intervene we must intervene you must intervene they must intervene
Forme en V-ing
I must be intervening you must be intervening he must be intervening we must be intervening you must be intervening they must be intervening
Perfect
I must have intervened you must have intervened he must have intervened we must have intervened you must have intervened they must have intervened
Perfect en V-ing
I must have been intervening you must have been intervening he must have been intervening we must have been intervening you must have been intervening they must have been intervening
Négation
Forme simple
I mustn't intervene you mustn't intervene he mustn't intervene we mustn't intervene you mustn't intervene they mustn't intervene
Forme en V-ing
I mustn't be intervening you mustn't be intervening he mustn't be intervening we mustn't be intervening you mustn't be intervening they mustn't be intervening
Perfect
I mustn't have intervened you mustn't have intervened he mustn't have intervened we mustn't have intervened you mustn't have intervened they mustn't have intervened
Perfect en V-ing
I mustn't have been intervening you mustn't have been intervening he mustn't have been intervening we mustn't have been intervening you mustn't have been intervening they mustn't have been intervening
Forme interrogative
Forme simple
must I intervene? must you intervene? must he intervene? must we intervene? must you intervene? must they intervene?
Forme en V-ing
must I be intervening? must you be intervening? must he be intervening? must we be intervening? must you be intervening? must they be intervening?
Perfect
must I have intervened? must you have intervened? must he have intervened? must we have intervened? must you have intervened? must they have intervened?
Perfect en V-ing
must I have been intervening? must you have been intervening? must he have been intervening? must we have been intervening? must you have been intervening? must they have been intervening?
Forme interro-négative
Forme simple
mustn't I intervene? mustn't you intervene? mustn't he intervene? mustn't we intervene? mustn't you intervene? mustn't they intervene?
Forme en V-ing
mustn't I be intervening? mustn't you be intervening? mustn't he be intervening? mustn't we be intervening? mustn't you be intervening? mustn't they be intervening?
Perfect
mustn't I have intervened? mustn't you have intervened? mustn't he have intervened? mustn't we have intervened? mustn't you have intervened? mustn't they have intervened?
Perfect en V-ing
mustn't I have been intervening? mustn't you have been intervening? mustn't he have been intervening? mustn't we have been intervening? mustn't you have been intervening? mustn't they have been intervening?