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 cannot screen you cannot screen he cannot screen we cannot screen you cannot screen they cannot screen
Forma com V-ing
I cannot be screening you cannot be screening he cannot be screening we cannot be screening you cannot be screening they cannot be screening
Perfeito
I cannot have screened you cannot have screened he cannot have screened we cannot have screened you cannot have screened they cannot have screened
Perfeito com V-ing
I cannot have been screening you cannot have been screening he cannot have been screening we cannot have been screening you cannot have been screening they cannot 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 I not screen? can you not screen? can he not screen? can we not screen? can you not screen? can they not screen?
Forma com V-ing
can I not be screening? can you not be screening? can he not be screening? can we not be screening? can you not be screening? can they not be screening?
Perfeito
can I not have screened? can you not have screened? can he not have screened? can we not have screened? can you not have screened? can they not have screened?
Perfeito com V-ing
can I not have been screening? can you not have been screening? can he not have been screening? can we not have been screening? can you not have been screening? can they not have been screening?