Conjugaison du verbe anglais
MUST UNDERRUN

Verbe irrégulier : underrun - underran - underrun

Affirmation

Forme simple	Forme en V-ing
I must underrun you must underrun he must underrun we must underrun you must underrun they must underrun	I must be underruning you must be underruning he must be underruning we must be underruning you must be underruning they must be underruning
Perfect	Perfect en V-ing
I must have underrun you must have underrun he must have underrun we must have underrun you must have underrun they must have underrun	I must have been underruning you must have been underruning he must have been underruning we must have been underruning you must have been underruning they must have been underruning

Négation

Forme simple	Forme en V-ing
I mustn't underrun you mustn't underrun he mustn't underrun we mustn't underrun you mustn't underrun they mustn't underrun	I mustn't be underruning you mustn't be underruning he mustn't be underruning we mustn't be underruning you mustn't be underruning they mustn't be underruning
Perfect	Perfect en V-ing
I mustn't have underrun you mustn't have underrun he mustn't have underrun we mustn't have underrun you mustn't have underrun they mustn't have underrun	I mustn't have been underruning you mustn't have been underruning he mustn't have been underruning we mustn't have been underruning you mustn't have been underruning they mustn't have been underruning

Forme interrogative

Forme simple	Forme en V-ing
must I underrun? must you underrun? must he underrun? must we underrun? must you underrun? must they underrun?	must I be underruning? must you be underruning? must he be underruning? must we be underruning? must you be underruning? must they be underruning?
Perfect	Perfect en V-ing
must I have underrun? must you have underrun? must he have underrun? must we have underrun? must you have underrun? must they have underrun?	must I have been underruning? must you have been underruning? must he have been underruning? must we have been underruning? must you have been underruning? must they have been underruning?

Forme interro-négative

Forme simple	Forme en V-ing
mustn't I underrun? mustn't you underrun? mustn't he underrun? mustn't we underrun? mustn't you underrun? mustn't they underrun?	mustn't I be underruning? mustn't you be underruning? mustn't he be underruning? mustn't we be underruning? mustn't you be underruning? mustn't they be underruning?
Perfect	Perfect en V-ing
mustn't I have underrun? mustn't you have underrun? mustn't he have underrun? mustn't we have underrun? mustn't you have underrun? mustn't they have underrun?	mustn't I have been underruning? mustn't you have been underruning? mustn't he have been underruning? mustn't we have been underruning? mustn't you have been underruning? mustn't they have been underruning?