I must decelerate you must decelerate she must decelerate we must decelerate you must decelerate they must decelerate
Forme en V-ing
I must be decelerating you must be decelerating she must be decelerating we must be decelerating you must be decelerating they must be decelerating
Perfect
I must have decelerated you must have decelerated she must have decelerated we must have decelerated you must have decelerated they must have decelerated
Perfect en V-ing
I must have been decelerating you must have been decelerating she must have been decelerating we must have been decelerating you must have been decelerating they must have been decelerating
Négation
Forme simple
I mustn't decelerate you mustn't decelerate she mustn't decelerate we mustn't decelerate you mustn't decelerate they mustn't decelerate
Forme en V-ing
I mustn't be decelerating you mustn't be decelerating she mustn't be decelerating we mustn't be decelerating you mustn't be decelerating they mustn't be decelerating
Perfect
I mustn't have decelerated you mustn't have decelerated she mustn't have decelerated we mustn't have decelerated you mustn't have decelerated they mustn't have decelerated
Perfect en V-ing
I mustn't have been decelerating you mustn't have been decelerating she mustn't have been decelerating we mustn't have been decelerating you mustn't have been decelerating they mustn't have been decelerating
Forme interrogative
Forme simple
must I decelerate? must you decelerate? must she decelerate? must we decelerate? must you decelerate? must they decelerate?
Forme en V-ing
must I be decelerating? must you be decelerating? must she be decelerating? must we be decelerating? must you be decelerating? must they be decelerating?
Perfect
must I have decelerated? must you have decelerated? must she have decelerated? must we have decelerated? must you have decelerated? must they have decelerated?
Perfect en V-ing
must I have been decelerating? must you have been decelerating? must she have been decelerating? must we have been decelerating? must you have been decelerating? must they have been decelerating?
Forme interro-négative
Forme simple
mustn't I decelerate? mustn't you decelerate? mustn't she decelerate? mustn't we decelerate? mustn't you decelerate? mustn't they decelerate?
Forme en V-ing
mustn't I be decelerating? mustn't you be decelerating? mustn't she be decelerating? mustn't we be decelerating? mustn't you be decelerating? mustn't they be decelerating?
Perfect
mustn't I have decelerated? mustn't you have decelerated? mustn't she have decelerated? mustn't we have decelerated? mustn't you have decelerated? mustn't they have decelerated?
Perfect en V-ing
mustn't I have been decelerating? mustn't you have been decelerating? mustn't she have been decelerating? mustn't we have been decelerating? mustn't you have been decelerating? mustn't they have been decelerating?