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