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

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may underperform
you may underperform
she may underperform
we may underperform
you may underperform
they may underperform 	I may be underperforming
you may be underperforming
she may be underperforming
we may be underperforming
you may be underperforming
they may be underperforming	I may have underperformed
you may have underperformed
she may have underperformed
we may have underperformed
you may have underperformed
they may have underperformed	I may have been underperforming
you may have been underperforming
she may have been underperforming
we may have been underperforming
you may have been underperforming
they may have been underperforming	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mayn't underperform
you mayn't underperform
she mayn't underperform
we mayn't underperform
you mayn't underperform
they mayn't underperform 	I mayn't be underperforming
you mayn't be underperforming
she mayn't be underperforming
we mayn't be underperforming
you mayn't be underperforming
they mayn't be underperforming	I mayn't have underperformed
you mayn't have underperformed
she mayn't have underperformed
we mayn't have underperformed
you mayn't have underperformed
they mayn't have underperformed	I mayn't have been underperforming
you mayn't have been underperforming
she mayn't have been underperforming
we mayn't have been underperforming
you mayn't have been underperforming
they mayn't have been underperforming	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I underperform?
may you underperform?
may she underperform?
may we underperform?
may you underperform?
may they underperform? 	may I be underperforming?
may you be underperforming?
may she be underperforming?
may we be underperforming?
may you be underperforming?
may they be underperforming? 	may I have underperformed?
may you have underperformed?
may she have underperformed?
may we have underperformed?
may you have underperformed?
may they have underperformed? 	may I have been underperforming?
may you have been underperforming?
may she have been underperforming?
may we have been underperforming?
may you have been underperforming?
may they have been underperforming? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mayn't I underperform?
mayn't you underperform?
mayn't she underperform?
mayn't we underperform?
mayn't you underperform?
mayn't they underperform? 	mayn't I be underperforming?
mayn't you be underperforming?
mayn't she be underperforming?
mayn't we be underperforming?
mayn't you be underperforming?
mayn't they be underperforming? 	mayn't I have underperformed?
mayn't you have underperformed?
mayn't she have underperformed?
mayn't we have underperformed?
mayn't you have underperformed?
mayn't they have underperformed? 	mayn't I have been underperforming?
mayn't you have been underperforming?
mayn't she have been underperforming?
mayn't we have been underperforming?
mayn't you have been underperforming?
mayn't they have been underperforming?