Conjugaison du verbe anglais
MUST UNDERSIGN

Verbe régulier : undersign - undersigned - undersigned

Affirmation

Forme simple	Forme en V-ing
I must undersign you must undersign she must undersign we must undersign you must undersign they must undersign	I must be undersigning you must be undersigning she must be undersigning we must be undersigning you must be undersigning they must be undersigning
Perfect	Perfect en V-ing
I must have undersigned you must have undersigned she must have undersigned we must have undersigned you must have undersigned they must have undersigned	I must have been undersigning you must have been undersigning she must have been undersigning we must have been undersigning you must have been undersigning they must have been undersigning

Négation

Forme simple	Forme en V-ing
I must not undersign you must not undersign she must not undersign we must not undersign you must not undersign they must not undersign	I must not be undersigning you must not be undersigning she must not be undersigning we must not be undersigning you must not be undersigning they must not be undersigning
Perfect	Perfect en V-ing
I must not have undersigned you must not have undersigned she must not have undersigned we must not have undersigned you must not have undersigned they must not have undersigned	I must not have been undersigning you must not have been undersigning she must not have been undersigning we must not have been undersigning you must not have been undersigning they must not have been undersigning

Forme interrogative

Forme simple	Forme en V-ing
must I undersign? must you undersign? must she undersign? must we undersign? must you undersign? must they undersign?	must I be undersigning? must you be undersigning? must she be undersigning? must we be undersigning? must you be undersigning? must they be undersigning?
Perfect	Perfect en V-ing
must I have undersigned? must you have undersigned? must she have undersigned? must we have undersigned? must you have undersigned? must they have undersigned?	must I have been undersigning? must you have been undersigning? must she have been undersigning? must we have been undersigning? must you have been undersigning? must they have been undersigning?

Forme interro-négative

Forme simple	Forme en V-ing
must I not undersign? must you not undersign? must she not undersign? must we not undersign? must you not undersign? must they not undersign?	must I not be undersigning? must you not be undersigning? must she not be undersigning? must we not be undersigning? must you not be undersigning? must they not be undersigning?
Perfect	Perfect en V-ing
must I not have undersigned? must you not have undersigned? must she not have undersigned? must we not have undersigned? must you not have undersigned? must they not have undersigned?	must I not have been undersigning? must you not have been undersigning? must she not have been undersigning? must we not have been undersigning? must you not have been undersigning? must they not have been undersigning?