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
she could underachieve
we could underachieve
you could underachieve
they could underachieve 	I could be underachieving
you could be underachieving
she could be underachieving
we could be underachieving
you could be underachieving
they could be underachieving	I could have underachieved
you could have underachieved
she 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
she 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 couldn't underachieve
you couldn't underachieve
she couldn't underachieve
we couldn't underachieve
you couldn't underachieve
they couldn't underachieve 	I couldn't be underachieving
you couldn't be underachieving
she couldn't be underachieving
we couldn't be underachieving
you couldn't be underachieving
they couldn't be underachieving	I couldn't have underachieved
you couldn't have underachieved
she couldn't have underachieved
we couldn't have underachieved
you couldn't have underachieved
they couldn't have underachieved	I couldn't have been underachieving
you couldn't have been underachieving
she couldn't have been underachieving
we couldn't have been underachieving
you couldn't have been underachieving
they couldn't have been underachieving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I underachieve?
could you underachieve?
could she underachieve?
could we underachieve?
could you underachieve?
could they underachieve? 	could I be underachieving?
could you be underachieving?
could she be underachieving?
could we be underachieving?
could you be underachieving?
could they be underachieving? 	could I have underachieved?
could you have underachieved?
could she 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 she 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 	
couldn't I underachieve?
couldn't you underachieve?
couldn't she underachieve?
couldn't we underachieve?
couldn't you underachieve?
couldn't they underachieve? 	couldn't I be underachieving?
couldn't you be underachieving?
couldn't she be underachieving?
couldn't we be underachieving?
couldn't you be underachieving?
couldn't they be underachieving? 	couldn't I have underachieved?
couldn't you have underachieved?
couldn't she have underachieved?
couldn't we have underachieved?
couldn't you have underachieved?
couldn't they have underachieved? 	couldn't I have been underachieving?
couldn't you have been underachieving?
couldn't she have been underachieving?
couldn't we have been underachieving?
couldn't you have been underachieving?
couldn't they have been underachieving?