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