should 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 should underperform
you should underperform
she should underperform
we should underperform
you should underperform
they should underperform 	I should be underperforming
you should be underperforming
she should be underperforming
we should be underperforming
you should be underperforming
they should be underperforming	I should have underperformed
you should have underperformed
she should have underperformed
we should have underperformed
you should have underperformed
they should have underperformed	I should have been underperforming
you should have been underperforming
she should have been underperforming
we should have been underperforming
you should have been underperforming
they should have been underperforming	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should not underperform
you should not underperform
she should not underperform
we should not underperform
you should not underperform
they should not underperform 	I should not be underperforming
you should not be underperforming
she should not be underperforming
we should not be underperforming
you should not be underperforming
they should not be underperforming	I should not have underperformed
you should not have underperformed
she should not have underperformed
we should not have underperformed
you should not have underperformed
they should not have underperformed	I should not have been underperforming
you should not have been underperforming
she should not have been underperforming
we should not have been underperforming
you should not have been underperforming
they should not have been underperforming	

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

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