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