Verbe régulier : stiffen - stiffened - stiffened Traduction française : raidir - devenir raide ou rigide
Affirmation
Forme simple
I must stiffen you must stiffen he must stiffen we must stiffen you must stiffen they must stiffen
Forme en V-ing
I must be stiffening you must be stiffening he must be stiffening we must be stiffening you must be stiffening they must be stiffening
Perfect
I must have stiffened you must have stiffened he must have stiffened we must have stiffened you must have stiffened they must have stiffened
Perfect en V-ing
I must have been stiffening you must have been stiffening he must have been stiffening we must have been stiffening you must have been stiffening they must have been stiffening
Négation
Forme simple
I must not stiffen you must not stiffen he must not stiffen we must not stiffen you must not stiffen they must not stiffen
Forme en V-ing
I must not be stiffening you must not be stiffening he must not be stiffening we must not be stiffening you must not be stiffening they must not be stiffening
Perfect
I must not have stiffened you must not have stiffened he must not have stiffened we must not have stiffened you must not have stiffened they must not have stiffened
Perfect en V-ing
I must not have been stiffening you must not have been stiffening he must not have been stiffening we must not have been stiffening you must not have been stiffening they must not have been stiffening
Forme interrogative
Forme simple
must I stiffen? must you stiffen? must he stiffen? must we stiffen? must you stiffen? must they stiffen?
Forme en V-ing
must I be stiffening? must you be stiffening? must he be stiffening? must we be stiffening? must you be stiffening? must they be stiffening?
Perfect
must I have stiffened? must you have stiffened? must he have stiffened? must we have stiffened? must you have stiffened? must they have stiffened?
Perfect en V-ing
must I have been stiffening? must you have been stiffening? must he have been stiffening? must we have been stiffening? must you have been stiffening? must they have been stiffening?
Forme interro-négative
Forme simple
must I not stiffen? must you not stiffen? must he not stiffen? must we not stiffen? must you not stiffen? must they not stiffen?
Forme en V-ing
must I not be stiffening? must you not be stiffening? must he not be stiffening? must we not be stiffening? must you not be stiffening? must they not be stiffening?
Perfect
must I not have stiffened? must you not have stiffened? must he not have stiffened? must we not have stiffened? must you not have stiffened? must they not have stiffened?
Perfect en V-ing
must I not have been stiffening? must you not have been stiffening? must he not have been stiffening? must we not have been stiffening? must you not have been stiffening? must they not have been stiffening?