I can screen you can screen he can screen we can screen you can screen they can screen
Forma com V-ing
I can be screening you can be screening he can be screening we can be screening you can be screening they can be screening
Perfeito
I can have screened you can have screened he can have screened we can have screened you can have screened they can have screened
Perfeito com V-ing
I can have been screening you can have been screening he can have been screening we can have been screening you can have been screening they can have been screening
Negação
Forma simple
I can't screen you can't screen he can't screen we can't screen you can't screen they can't screen
Forma com V-ing
I can't be screening you can't be screening he can't be screening we can't be screening you can't be screening they can't be screening
Perfeito
I can't have screened you can't have screened he can't have screened we can't have screened you can't have screened they can't have screened
Perfeito com V-ing
I can't have been screening you can't have been screening he can't have been screening we can't have been screening you can't have been screening they can't have been screening
Forma interrogativa
Forma simple
can I screen? can you screen? can he screen? can we screen? can you screen? can they screen?
Forma com V-ing
can I be screening? can you be screening? can he be screening? can we be screening? can you be screening? can they be screening?
Perfeito
can I have screened? can you have screened? can he have screened? can we have screened? can you have screened? can they have screened?
Perfeito com V-ing
can I have been screening? can you have been screening? can he have been screening? can we have been screening? can you have been screening? can they have been screening?
Forma interro-Negação
Forma simple
can't I screen? can't you screen? can't he screen? can't we screen? can't you screen? can't they screen?
Forma com V-ing
can't I be screening? can't you be screening? can't he be screening? can't we be screening? can't you be screening? can't they be screening?
Perfeito
can't I have screened? can't you have screened? can't he have screened? can't we have screened? can't you have screened? can't they have screened?
Perfeito com V-ing
can't I have been screening? can't you have been screening? can't he have been screening? can't we have been screening? can't you have been screening? can't they have been screening?