Conjugaison du verbe anglais
MUST STIFFER

Verbe régulier : stiffer - stiffered - stiffered

Attention, ce verbe peut ne pas exister, la conjugaison est donnée à titre d'exemple.

Affirmation

Forme simple	Forme en V-ing
I must stiffer you must stiffer he must stiffer we must stiffer you must stiffer they must stiffer	I must be stiffering you must be stiffering he must be stiffering we must be stiffering you must be stiffering they must be stiffering
Perfect	Perfect en V-ing
I must have stiffered you must have stiffered he must have stiffered we must have stiffered you must have stiffered they must have stiffered	I must have been stiffering you must have been stiffering he must have been stiffering we must have been stiffering you must have been stiffering they must have been stiffering

Négation

Forme simple	Forme en V-ing
I must not stiffer you must not stiffer he must not stiffer we must not stiffer you must not stiffer they must not stiffer	I must not be stiffering you must not be stiffering he must not be stiffering we must not be stiffering you must not be stiffering they must not be stiffering
Perfect	Perfect en V-ing
I must not have stiffered you must not have stiffered he must not have stiffered we must not have stiffered you must not have stiffered they must not have stiffered	I must not have been stiffering you must not have been stiffering he must not have been stiffering we must not have been stiffering you must not have been stiffering they must not have been stiffering

Forme interrogative

Forme simple	Forme en V-ing
must I stiffer? must you stiffer? must he stiffer? must we stiffer? must you stiffer? must they stiffer?	must I be stiffering? must you be stiffering? must he be stiffering? must we be stiffering? must you be stiffering? must they be stiffering?
Perfect	Perfect en V-ing
must I have stiffered? must you have stiffered? must he have stiffered? must we have stiffered? must you have stiffered? must they have stiffered?	must I have been stiffering? must you have been stiffering? must he have been stiffering? must we have been stiffering? must you have been stiffering? must they have been stiffering?

Forme interro-négative

Forme simple	Forme en V-ing
must I not stiffer? must you not stiffer? must he not stiffer? must we not stiffer? must you not stiffer? must they not stiffer?	must I not be stiffering? must you not be stiffering? must he not be stiffering? must we not be stiffering? must you not be stiffering? must they not be stiffering?
Perfect	Perfect en V-ing
must I not have stiffered? must you not have stiffered? must he not have stiffered? must we not have stiffered? must you not have stiffered? must they not have stiffered?	must I not have been stiffering? must you not have been stiffering? must he not have been stiffering? must we not have been stiffering? must you not have been stiffering? must they not have been stiffering?