I can book you can book he can book we can book you can book they can book
Forma com V-ing
I can be booking you can be booking he can be booking we can be booking you can be booking they can be booking
Perfeito
I can have booked you can have booked he can have booked we can have booked you can have booked they can have booked
Perfeito com V-ing
I can have been booking you can have been booking he can have been booking we can have been booking you can have been booking they can have been booking
Negação
Forma simple
I can't book you can't book he can't book we can't book you can't book they can't book
Forma com V-ing
I can't be booking you can't be booking he can't be booking we can't be booking you can't be booking they can't be booking
Perfeito
I can't have booked you can't have booked he can't have booked we can't have booked you can't have booked they can't have booked
Perfeito com V-ing
I can't have been booking you can't have been booking he can't have been booking we can't have been booking you can't have been booking they can't have been booking
Forma interrogativa
Forma simple
can I book? can you book? can he book? can we book? can you book? can they book?
Forma com V-ing
can I be booking? can you be booking? can he be booking? can we be booking? can you be booking? can they be booking?
Perfeito
can I have booked? can you have booked? can he have booked? can we have booked? can you have booked? can they have booked?
Perfeito com V-ing
can I have been booking? can you have been booking? can he have been booking? can we have been booking? can you have been booking? can they have been booking?
Forma interro-Negação
Forma simple
can't I book? can't you book? can't he book? can't we book? can't you book? can't they book?
Forma com V-ing
can't I be booking? can't you be booking? can't he be booking? can't we be booking? can't you be booking? can't they be booking?
Perfeito
can't I have booked? can't you have booked? can't he have booked? can't we have booked? can't you have booked? can't they have booked?
Perfeito com V-ing
can't I have been booking? can't you have been booking? can't he have been booking? can't we have been booking? can't you have been booking? can't they have been booking?