Conjugaison du verbe anglais
MUST STIFF

Verbe régulier : stiff - stiffed - stiffed

Affirmation

Forme simple	Forme en V-ing
I must stiff you must stiff she must stiff we must stiff you must stiff they must stiff	I must be stiffing you must be stiffing she must be stiffing we must be stiffing you must be stiffing they must be stiffing
Perfect	Perfect en V-ing
I must have stiffed you must have stiffed she must have stiffed we must have stiffed you must have stiffed they must have stiffed	I must have been stiffing you must have been stiffing she must have been stiffing we must have been stiffing you must have been stiffing they must have been stiffing

Négation

Forme simple	Forme en V-ing
I mustn't stiff you mustn't stiff she mustn't stiff we mustn't stiff you mustn't stiff they mustn't stiff	I mustn't be stiffing you mustn't be stiffing she mustn't be stiffing we mustn't be stiffing you mustn't be stiffing they mustn't be stiffing
Perfect	Perfect en V-ing
I mustn't have stiffed you mustn't have stiffed she mustn't have stiffed we mustn't have stiffed you mustn't have stiffed they mustn't have stiffed	I mustn't have been stiffing you mustn't have been stiffing she mustn't have been stiffing we mustn't have been stiffing you mustn't have been stiffing they mustn't have been stiffing

Forme interrogative

Forme simple	Forme en V-ing
must I stiff? must you stiff? must she stiff? must we stiff? must you stiff? must they stiff?	must I be stiffing? must you be stiffing? must she be stiffing? must we be stiffing? must you be stiffing? must they be stiffing?
Perfect	Perfect en V-ing
must I have stiffed? must you have stiffed? must she have stiffed? must we have stiffed? must you have stiffed? must they have stiffed?	must I have been stiffing? must you have been stiffing? must she have been stiffing? must we have been stiffing? must you have been stiffing? must they have been stiffing?

Forme interro-négative

Forme simple	Forme en V-ing
mustn't I stiff? mustn't you stiff? mustn't she stiff? mustn't we stiff? mustn't you stiff? mustn't they stiff?	mustn't I be stiffing? mustn't you be stiffing? mustn't she be stiffing? mustn't we be stiffing? mustn't you be stiffing? mustn't they be stiffing?
Perfect	Perfect en V-ing
mustn't I have stiffed? mustn't you have stiffed? mustn't she have stiffed? mustn't we have stiffed? mustn't you have stiffed? mustn't they have stiffed?	mustn't I have been stiffing? mustn't you have been stiffing? mustn't she have been stiffing? mustn't we have been stiffing? mustn't you have been stiffing? mustn't they have been stiffing?