I can board you can board he can board we can board you can board they can board
Forma com V-ing
I can be boarding you can be boarding he can be boarding we can be boarding you can be boarding they can be boarding
Perfeito
I can have boarded you can have boarded he can have boarded we can have boarded you can have boarded they can have boarded
Perfeito com V-ing
I can have been boarding you can have been boarding he can have been boarding we can have been boarding you can have been boarding they can have been boarding
Negação
Forma simple
I can't board you can't board he can't board we can't board you can't board they can't board
Forma com V-ing
I can't be boarding you can't be boarding he can't be boarding we can't be boarding you can't be boarding they can't be boarding
Perfeito
I can't have boarded you can't have boarded he can't have boarded we can't have boarded you can't have boarded they can't have boarded
Perfeito com V-ing
I can't have been boarding you can't have been boarding he can't have been boarding we can't have been boarding you can't have been boarding they can't have been boarding
Forma interrogativa
Forma simple
can I board? can you board? can he board? can we board? can you board? can they board?
Forma com V-ing
can I be boarding? can you be boarding? can he be boarding? can we be boarding? can you be boarding? can they be boarding?
Perfeito
can I have boarded? can you have boarded? can he have boarded? can we have boarded? can you have boarded? can they have boarded?
Perfeito com V-ing
can I have been boarding? can you have been boarding? can he have been boarding? can we have been boarding? can you have been boarding? can they have been boarding?
Forma interro-Negação
Forma simple
can't I board? can't you board? can't he board? can't we board? can't you board? can't they board?
Forma com V-ing
can't I be boarding? can't you be boarding? can't he be boarding? can't we be boarding? can't you be boarding? can't they be boarding?
Perfeito
can't I have boarded? can't you have boarded? can't he have boarded? can't we have boarded? can't you have boarded? can't they have boarded?
Perfeito com V-ing
can't I have been boarding? can't you have been boarding? can't he have been boarding? can't we have been boarding? can't you have been boarding? can't they have been boarding?