Conjugaison du verbe anglais
MUST UNDERPERFORM

Verbe régulier : underperform - underperformed - underperformed
Traduction française : rester en deçà de ses possibilités

Affirmation

Forme simple	Forme en V-ing
I must underperform you must underperform he must underperform we must underperform you must underperform they must underperform	I must be underperforming you must be underperforming he must be underperforming we must be underperforming you must be underperforming they must be underperforming
Perfect	Perfect en V-ing
I must have underperformed you must have underperformed he must have underperformed we must have underperformed you must have underperformed they must have underperformed	I must have been underperforming you must have been underperforming he must have been underperforming we must have been underperforming you must have been underperforming they must have been underperforming

Négation

Forme simple	Forme en V-ing
I must not underperform you must not underperform he must not underperform we must not underperform you must not underperform they must not underperform	I must not be underperforming you must not be underperforming he must not be underperforming we must not be underperforming you must not be underperforming they must not be underperforming
Perfect	Perfect en V-ing
I must not have underperformed you must not have underperformed he must not have underperformed we must not have underperformed you must not have underperformed they must not have underperformed	I must not have been underperforming you must not have been underperforming he must not have been underperforming we must not have been underperforming you must not have been underperforming they must not have been underperforming

Forme interrogative

Forme simple	Forme en V-ing
must I underperform? must you underperform? must he underperform? must we underperform? must you underperform? must they underperform?	must I be underperforming? must you be underperforming? must he be underperforming? must we be underperforming? must you be underperforming? must they be underperforming?
Perfect	Perfect en V-ing
must I have underperformed? must you have underperformed? must he have underperformed? must we have underperformed? must you have underperformed? must they have underperformed?	must I have been underperforming? must you have been underperforming? must he have been underperforming? must we have been underperforming? must you have been underperforming? must they have been underperforming?

Forme interro-négative

Forme simple	Forme en V-ing
must I not underperform? must you not underperform? must he not underperform? must we not underperform? must you not underperform? must they not underperform?	must I not be underperforming? must you not be underperforming? must he not be underperforming? must we not be underperforming? must you not be underperforming? must they not be underperforming?
Perfect	Perfect en V-ing
must I not have underperformed? must you not have underperformed? must he not have underperformed? must we not have underperformed? must you not have underperformed? must they not have underperformed?	must I not have been underperforming? must you not have been underperforming? must he not have been underperforming? must we not have been underperforming? must you not have been underperforming? must they not have been underperforming?