Conjugaison du verbe anglais
MUST COUNTERVAIL

Verbe régulier : countervail - countervailed - countervailed

Affirmation

Forme simple	Forme en V-ing
I must countervail you must countervail she must countervail we must countervail you must countervail they must countervail	I must be countervailing you must be countervailing she must be countervailing we must be countervailing you must be countervailing they must be countervailing
Perfect	Perfect en V-ing
I must have countervailed you must have countervailed she must have countervailed we must have countervailed you must have countervailed they must have countervailed	I must have been countervailing you must have been countervailing she must have been countervailing we must have been countervailing you must have been countervailing they must have been countervailing

Négation

Forme simple	Forme en V-ing
I must not countervail you must not countervail she must not countervail we must not countervail you must not countervail they must not countervail	I must not be countervailing you must not be countervailing she must not be countervailing we must not be countervailing you must not be countervailing they must not be countervailing
Perfect	Perfect en V-ing
I must not have countervailed you must not have countervailed she must not have countervailed we must not have countervailed you must not have countervailed they must not have countervailed	I must not have been countervailing you must not have been countervailing she must not have been countervailing we must not have been countervailing you must not have been countervailing they must not have been countervailing

Forme interrogative

Forme simple	Forme en V-ing
must I countervail? must you countervail? must she countervail? must we countervail? must you countervail? must they countervail?	must I be countervailing? must you be countervailing? must she be countervailing? must we be countervailing? must you be countervailing? must they be countervailing?
Perfect	Perfect en V-ing
must I have countervailed? must you have countervailed? must she have countervailed? must we have countervailed? must you have countervailed? must they have countervailed?	must I have been countervailing? must you have been countervailing? must she have been countervailing? must we have been countervailing? must you have been countervailing? must they have been countervailing?

Forme interro-négative

Forme simple	Forme en V-ing
must I not countervail? must you not countervail? must she not countervail? must we not countervail? must you not countervail? must they not countervail?	must I not be countervailing? must you not be countervailing? must she not be countervailing? must we not be countervailing? must you not be countervailing? must they not be countervailing?
Perfect	Perfect en V-ing
must I not have countervailed? must you not have countervailed? must she not have countervailed? must we not have countervailed? must you not have countervailed? must they not have countervailed?	must I not have been countervailing? must you not have been countervailing? must she not have been countervailing? must we not have been countervailing? must you not have been countervailing? must they not have been countervailing?