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