I can prealter you can prealter he can prealter we can prealter you can prealter they can prealter
Forme en V-ing
I can be prealtering you can be prealtering he can be prealtering we can be prealtering you can be prealtering they can be prealtering
Perfect
I can have prealtered you can have prealtered he can have prealtered we can have prealtered you can have prealtered they can have prealtered
Perfect en V-ing
I can have been prealtering you can have been prealtering he can have been prealtering we can have been prealtering you can have been prealtering they can have been prealtering
Négation
Forme simple
I cannot prealter you cannot prealter he cannot prealter we cannot prealter you cannot prealter they cannot prealter
Forme en V-ing
I cannot be prealtering you cannot be prealtering he cannot be prealtering we cannot be prealtering you cannot be prealtering they cannot be prealtering
Perfect
I cannot have prealtered you cannot have prealtered he cannot have prealtered we cannot have prealtered you cannot have prealtered they cannot have prealtered
Perfect en V-ing
I cannot have been prealtering you cannot have been prealtering he cannot have been prealtering we cannot have been prealtering you cannot have been prealtering they cannot have been prealtering
Forme interrogative
Forme simple
can I prealter? can you prealter? can he prealter? can we prealter? can you prealter? can they prealter?
Forme en V-ing
can I be prealtering? can you be prealtering? can he be prealtering? can we be prealtering? can you be prealtering? can they be prealtering?
Perfect
can I have prealtered? can you have prealtered? can he have prealtered? can we have prealtered? can you have prealtered? can they have prealtered?
Perfect en V-ing
can I have been prealtering? can you have been prealtering? can he have been prealtering? can we have been prealtering? can you have been prealtering? can they have been prealtering?
Forme interro-négative
Forme simple
can I not prealter? can you not prealter? can he not prealter? can we not prealter? can you not prealter? can they not prealter?
Forme en V-ing
can I not be prealtering? can you not be prealtering? can he not be prealtering? can we not be prealtering? can you not be prealtering? can they not be prealtering?
Perfect
can I not have prealtered? can you not have prealtered? can he not have prealtered? can we not have prealtered? can you not have prealtered? can they not have prealtered?
Perfect en V-ing
can I not have been prealtering? can you not have been prealtering? can he not have been prealtering? can we not have been prealtering? can you not have been prealtering? can they not have been prealtering?