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