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 mustn't underperform you mustn't underperform he mustn't underperform we mustn't underperform you mustn't underperform they mustn't underperform	I mustn't be underperforming you mustn't be underperforming he mustn't be underperforming we mustn't be underperforming you mustn't be underperforming they mustn't be underperforming
Perfect	Perfect en V-ing
I mustn't have underperformed you mustn't have underperformed he mustn't have underperformed we mustn't have underperformed you mustn't have underperformed they mustn't have underperformed	I mustn't have been underperforming you mustn't have been underperforming he mustn't have been underperforming we mustn't have been underperforming you mustn't have been underperforming they mustn't 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
mustn't I underperform? mustn't you underperform? mustn't he underperform? mustn't we underperform? mustn't you underperform? mustn't they underperform?	mustn't I be underperforming? mustn't you be underperforming? mustn't he be underperforming? mustn't we be underperforming? mustn't you be underperforming? mustn't they be underperforming?
Perfect	Perfect en V-ing
mustn't I have underperformed? mustn't you have underperformed? mustn't he have underperformed? mustn't we have underperformed? mustn't you have underperformed? mustn't they have underperformed?	mustn't I have been underperforming? mustn't you have been underperforming? mustn't he have been underperforming? mustn't we have been underperforming? mustn't you have been underperforming? mustn't they have been underperforming?