I can better you can better she can better we can better you can better they can better
Forme en V-ing
I can be bettering you can be bettering she can be bettering we can be bettering you can be bettering they can be bettering
Perfect
I can have bettered you can have bettered she can have bettered we can have bettered you can have bettered they can have bettered
Perfect en V-ing
I can have been bettering you can have been bettering she can have been bettering we can have been bettering you can have been bettering they can have been bettering
Négation
Forme simple
I can't better you can't better she can't better we can't better you can't better they can't better
Forme en V-ing
I can't be bettering you can't be bettering she can't be bettering we can't be bettering you can't be bettering they can't be bettering
Perfect
I can't have bettered you can't have bettered she can't have bettered we can't have bettered you can't have bettered they can't have bettered
Perfect en V-ing
I can't have been bettering you can't have been bettering she can't have been bettering we can't have been bettering you can't have been bettering they can't have been bettering
Forme interrogative
Forme simple
can I better? can you better? can she better? can we better? can you better? can they better?
Forme en V-ing
can I be bettering? can you be bettering? can she be bettering? can we be bettering? can you be bettering? can they be bettering?
Perfect
can I have bettered? can you have bettered? can she have bettered? can we have bettered? can you have bettered? can they have bettered?
Perfect en V-ing
can I have been bettering? can you have been bettering? can she have been bettering? can we have been bettering? can you have been bettering? can they have been bettering?
Forme interro-négative
Forme simple
can't I better? can't you better? can't she better? can't we better? can't you better? can't they better?
Forme en V-ing
can't I be bettering? can't you be bettering? can't she be bettering? can't we be bettering? can't you be bettering? can't they be bettering?
Perfect
can't I have bettered? can't you have bettered? can't she have bettered? can't we have bettered? can't you have bettered? can't they have bettered?
Perfect en V-ing
can't I have been bettering? can't you have been bettering? can't she have been bettering? can't we have been bettering? can't you have been bettering? can't they have been bettering?