I could better you could better he could better we could better you could better they could better
Forme en V-ing
I could be bettering you could be bettering he could be bettering we could be bettering you could be bettering they could be bettering
Perfect
I could have bettered you could have bettered he could have bettered we could have bettered you could have bettered they could have bettered
Perfect en V-ing
I could have been bettering you could have been bettering he could have been bettering we could have been bettering you could have been bettering they could have been bettering
Négation
Forme simple
I could not better you could not better he could not better we could not better you could not better they could not better
Forme en V-ing
I could not be bettering you could not be bettering he could not be bettering we could not be bettering you could not be bettering they could not be bettering
Perfect
I could not have bettered you could not have bettered he could not have bettered we could not have bettered you could not have bettered they could not have bettered
Perfect en V-ing
I could not have been bettering you could not have been bettering he could not have been bettering we could not have been bettering you could not have been bettering they could not have been bettering
Forme interrogative
Forme simple
could I better? could you better? could he better? could we better? could you better? could they better?
Forme en V-ing
could I be bettering? could you be bettering? could he be bettering? could we be bettering? could you be bettering? could they be bettering?
Perfect
could I have bettered? could you have bettered? could he have bettered? could we have bettered? could you have bettered? could they have bettered?
Perfect en V-ing
could I have been bettering? could you have been bettering? could he have been bettering? could we have been bettering? could you have been bettering? could they have been bettering?
Forme interro-négative
Forme simple
could I not better? could you not better? could he not better? could we not better? could you not better? could they not better?
Forme en V-ing
could I not be bettering? could you not be bettering? could he not be bettering? could we not be bettering? could you not be bettering? could they not be bettering?
Perfect
could I not have bettered? could you not have bettered? could he not have bettered? could we not have bettered? could you not have bettered? could they not have bettered?
Perfect en V-ing
could I not have been bettering? could you not have been bettering? could he not have been bettering? could we not have been bettering? could you not have been bettering? could they not have been bettering?