Conjugaison du verbe anglais
MUST UNDERTAKE

Verbe irrégulier : undertake - undertook - undertaken
Traduction française : entreprendre - s'engager à

Affirmation

Forme simple	Forme en V-ing
I must undertake you must undertake she must undertake we must undertake you must undertake they must undertake	I must be undertaking you must be undertaking she must be undertaking we must be undertaking you must be undertaking they must be undertaking
Perfect	Perfect en V-ing
I must have undertaken you must have undertaken she must have undertaken we must have undertaken you must have undertaken they must have undertaken	I must have been undertaking you must have been undertaking she must have been undertaking we must have been undertaking you must have been undertaking they must have been undertaking

Négation

Forme simple	Forme en V-ing
I mustn't undertake you mustn't undertake she mustn't undertake we mustn't undertake you mustn't undertake they mustn't undertake	I mustn't be undertaking you mustn't be undertaking she mustn't be undertaking we mustn't be undertaking you mustn't be undertaking they mustn't be undertaking
Perfect	Perfect en V-ing
I mustn't have undertaken you mustn't have undertaken she mustn't have undertaken we mustn't have undertaken you mustn't have undertaken they mustn't have undertaken	I mustn't have been undertaking you mustn't have been undertaking she mustn't have been undertaking we mustn't have been undertaking you mustn't have been undertaking they mustn't have been undertaking

Forme interrogative

Forme simple	Forme en V-ing
must I undertake? must you undertake? must she undertake? must we undertake? must you undertake? must they undertake?	must I be undertaking? must you be undertaking? must she be undertaking? must we be undertaking? must you be undertaking? must they be undertaking?
Perfect	Perfect en V-ing
must I have undertaken? must you have undertaken? must she have undertaken? must we have undertaken? must you have undertaken? must they have undertaken?	must I have been undertaking? must you have been undertaking? must she have been undertaking? must we have been undertaking? must you have been undertaking? must they have been undertaking?

Forme interro-négative

Forme simple	Forme en V-ing
mustn't I undertake? mustn't you undertake? mustn't she undertake? mustn't we undertake? mustn't you undertake? mustn't they undertake?	mustn't I be undertaking? mustn't you be undertaking? mustn't she be undertaking? mustn't we be undertaking? mustn't you be undertaking? mustn't they be undertaking?
Perfect	Perfect en V-ing
mustn't I have undertaken? mustn't you have undertaken? mustn't she have undertaken? mustn't we have undertaken? mustn't you have undertaken? mustn't they have undertaken?	mustn't I have been undertaking? mustn't you have been undertaking? mustn't she have been undertaking? mustn't we have been undertaking? mustn't you have been undertaking? mustn't they have been undertaking?