I can visit you can visit he can visit we can visit you can visit they can visit
Forma com V-ing
I can be visiting you can be visiting he can be visiting we can be visiting you can be visiting they can be visiting
Perfeito
I can have visited you can have visited he can have visited we can have visited you can have visited they can have visited
Perfeito com V-ing
I can have been visiting you can have been visiting he can have been visiting we can have been visiting you can have been visiting they can have been visiting
Negação
Forma simple
I can't visit you can't visit he can't visit we can't visit you can't visit they can't visit
Forma com V-ing
I can't be visiting you can't be visiting he can't be visiting we can't be visiting you can't be visiting they can't be visiting
Perfeito
I can't have visited you can't have visited he can't have visited we can't have visited you can't have visited they can't have visited
Perfeito com V-ing
I can't have been visiting you can't have been visiting he can't have been visiting we can't have been visiting you can't have been visiting they can't have been visiting
Forma interrogativa
Forma simple
can I visit? can you visit? can he visit? can we visit? can you visit? can they visit?
Forma com V-ing
can I be visiting? can you be visiting? can he be visiting? can we be visiting? can you be visiting? can they be visiting?
Perfeito
can I have visited? can you have visited? can he have visited? can we have visited? can you have visited? can they have visited?
Perfeito com V-ing
can I have been visiting? can you have been visiting? can he have been visiting? can we have been visiting? can you have been visiting? can they have been visiting?
Forma interro-Negação
Forma simple
can't I visit? can't you visit? can't he visit? can't we visit? can't you visit? can't they visit?
Forma com V-ing
can't I be visiting? can't you be visiting? can't he be visiting? can't we be visiting? can't you be visiting? can't they be visiting?
Perfeito
can't I have visited? can't you have visited? can't he have visited? can't we have visited? can't you have visited? can't they have visited?
Perfeito com V-ing
can't I have been visiting? can't you have been visiting? can't he have been visiting? can't we have been visiting? can't you have been visiting? can't they have been visiting?