I can screen you can screen he can screen we can screen you can screen they can screen
Forme en 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
Perfect
I can have screened you can have screened he can have screened we can have screened you can have screened they can have screened
Perfect en 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
Négation
Forme 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
Forme en 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
Perfect
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
Perfect en 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
Forme interrogative
Forme simple
can I screen? can you screen? can he screen? can we screen? can you screen? can they screen?
Forme en 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?
Perfect
can I have screened? can you have screened? can he have screened? can we have screened? can you have screened? can they have screened?
Perfect en 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?
Forme interro-négative
Forme 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?
Forme en 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?
Perfect
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?
Perfect en 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?