I can center you can center he can center we can center you can center they can center
Forma com V-ing
I can be centering you can be centering he can be centering we can be centering you can be centering they can be centering
Perfeito
I can have centered you can have centered he can have centered we can have centered you can have centered they can have centered
Perfeito com V-ing
I can have been centering you can have been centering he can have been centering we can have been centering you can have been centering they can have been centering
Negação
Forma simple
I can't center you can't center he can't center we can't center you can't center they can't center
Forma com V-ing
I can't be centering you can't be centering he can't be centering we can't be centering you can't be centering they can't be centering
Perfeito
I can't have centered you can't have centered he can't have centered we can't have centered you can't have centered they can't have centered
Perfeito com V-ing
I can't have been centering you can't have been centering he can't have been centering we can't have been centering you can't have been centering they can't have been centering
Forma interrogativa
Forma simple
can I center? can you center? can he center? can we center? can you center? can they center?
Forma com V-ing
can I be centering? can you be centering? can he be centering? can we be centering? can you be centering? can they be centering?
Perfeito
can I have centered? can you have centered? can he have centered? can we have centered? can you have centered? can they have centered?
Perfeito com V-ing
can I have been centering? can you have been centering? can he have been centering? can we have been centering? can you have been centering? can they have been centering?
Forma interro-Negação
Forma simple
can't I center? can't you center? can't he center? can't we center? can't you center? can't they center?
Forma com V-ing
can't I be centering? can't you be centering? can't he be centering? can't we be centering? can't you be centering? can't they be centering?
Perfeito
can't I have centered? can't you have centered? can't he have centered? can't we have centered? can't you have centered? can't they have centered?
Perfeito com V-ing
can't I have been centering? can't you have been centering? can't he have been centering? can't we have been centering? can't you have been centering? can't they have been centering?