I can database you can database she can database we can database you can database they can database
Forma com V-ing
I can be databasing you can be databasing she can be databasing we can be databasing you can be databasing they can be databasing
Perfeito
I can have databased you can have databased she can have databased we can have databased you can have databased they can have databased
Perfeito com V-ing
I can have been databasing you can have been databasing she can have been databasing we can have been databasing you can have been databasing they can have been databasing
Negação
Forma simple
I can't database you can't database she can't database we can't database you can't database they can't database
Forma com V-ing
I can't be databasing you can't be databasing she can't be databasing we can't be databasing you can't be databasing they can't be databasing
Perfeito
I can't have databased you can't have databased she can't have databased we can't have databased you can't have databased they can't have databased
Perfeito com V-ing
I can't have been databasing you can't have been databasing she can't have been databasing we can't have been databasing you can't have been databasing they can't have been databasing
Forma interrogativa
Forma simple
can I database? can you database? can she database? can we database? can you database? can they database?
Forma com V-ing
can I be databasing? can you be databasing? can she be databasing? can we be databasing? can you be databasing? can they be databasing?
Perfeito
can I have databased? can you have databased? can she have databased? can we have databased? can you have databased? can they have databased?
Perfeito com V-ing
can I have been databasing? can you have been databasing? can she have been databasing? can we have been databasing? can you have been databasing? can they have been databasing?
Forma interro-Negação
Forma simple
can't I database? can't you database? can't she database? can't we database? can't you database? can't they database?
Forma com V-ing
can't I be databasing? can't you be databasing? can't she be databasing? can't we be databasing? can't you be databasing? can't they be databasing?
Perfeito
can't I have databased? can't you have databased? can't she have databased? can't we have databased? can't you have databased? can't they have databased?
Perfeito com V-ing
can't I have been databasing? can't you have been databasing? can't she have been databasing? can't we have been databasing? can't you have been databasing? can't they have been databasing?