Conjugaison du verbe anglais
MUST UNDERRUN

Verbe irrégulier : underrun - underran - underrun

Affirmation

Forme simple	Forme en V-ing
I must underrun you must underrun she must underrun we must underrun you must underrun they must underrun	I must be underruning you must be underruning she 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 she 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 she 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 must not underrun you must not underrun she must not underrun we must not underrun you must not underrun they must not underrun	I must not be underruning you must not be underruning she must not be underruning we must not be underruning you must not be underruning they must not be underruning
Perfect	Perfect en V-ing
I must not have underrun you must not have underrun she must not have underrun we must not have underrun you must not have underrun they must not have underrun	I must not have been underruning you must not have been underruning she must not have been underruning we must not have been underruning you must not have been underruning they must not have been underruning

Forme interrogative

Forme simple	Forme en V-ing
must I underrun? must you underrun? must she underrun? must we underrun? must you underrun? must they underrun?	must I be underruning? must you be underruning? must she 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 she 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 she 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
must I not underrun? must you not underrun? must she not underrun? must we not underrun? must you not underrun? must they not underrun?	must I not be underruning? must you not be underruning? must she not be underruning? must we not be underruning? must you not be underruning? must they not be underruning?
Perfect	Perfect en V-ing
must I not have underrun? must you not have underrun? must she not have underrun? must we not have underrun? must you not have underrun? must they not have underrun?	must I not have been underruning? must you not have been underruning? must she not have been underruning? must we not have been underruning? must you not have been underruning? must they not have been underruning?