could underachieve
Verbe régulier : underachieve - underachieved- underachieved
Traduction française : ne pas obtenir les résultats attendus 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could underachieve
you could underachieve
he could underachieve
we could underachieve
you could underachieve
they could underachieve 	I could be underachieving
you could be underachieving
he could be underachieving
we could be underachieving
you could be underachieving
they could be underachieving	I could have underachieved
you could have underachieved
he could have underachieved
we could have underachieved
you could have underachieved
they could have underachieved	I could have been underachieving
you could have been underachieving
he could have been underachieving
we could have been underachieving
you could have been underachieving
they could have been underachieving	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not underachieve
you could not underachieve
he could not underachieve
we could not underachieve
you could not underachieve
they could not underachieve 	I could not be underachieving
you could not be underachieving
he could not be underachieving
we could not be underachieving
you could not be underachieving
they could not be underachieving	I could not have underachieved
you could not have underachieved
he could not have underachieved
we could not have underachieved
you could not have underachieved
they could not have underachieved	I could not have been underachieving
you could not have been underachieving
he could not have been underachieving
we could not have been underachieving
you could not have been underachieving
they could not have been underachieving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I underachieve?
could you underachieve?
could he underachieve?
could we underachieve?
could you underachieve?
could they underachieve? 	could I be underachieving?
could you be underachieving?
could he be underachieving?
could we be underachieving?
could you be underachieving?
could they be underachieving? 	could I have underachieved?
could you have underachieved?
could he have underachieved?
could we have underachieved?
could you have underachieved?
could they have underachieved? 	could I have been underachieving?
could you have been underachieving?
could he have been underachieving?
could we have been underachieving?
could you have been underachieving?
could they have been underachieving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not underachieve?
could you not underachieve?
could he not underachieve?
could we not underachieve?
could you not underachieve?
could they not underachieve? 	could I not be underachieving?
could you not be underachieving?
could he not be underachieving?
could we not be underachieving?
could you not be underachieving?
could they not be underachieving? 	could I not have underachieved?
could you not have underachieved?
could he not have underachieved?
could we not have underachieved?
could you not have underachieved?
could they not have underachieved? 	could I not have been underachieving?
could you not have been underachieving?
could he not have been underachieving?
could we not have been underachieving?
could you not have been underachieving?
could they not have been underachieving?