can screen
Verbo regular: screen - screened- screened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can screen
you can screen
he can screen
we can screen
you can screen
they can screen 	I can be screening
you can be screening
he can be screening
we can be screening
you can be screening
they can be screening	I can have screened
you can have screened
he can have screened
we can have screened
you can have screened
they can have screened	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot screen
you cannot screen
he cannot screen
we cannot screen
you cannot screen
they cannot screen 	I cannot be screening
you cannot be screening
he cannot be screening
we cannot be screening
you cannot be screening
they cannot be screening	I cannot have screened
you cannot have screened
he cannot have screened
we cannot have screened
you cannot have screened
they cannot have screened	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 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I screen?
can you screen?
can he screen?
can we screen?
can you screen?
can they screen? 	can I be screening?
can you be screening?
can he be screening?
can we be screening?
can you be screening?
can they be screening? 	can I have screened?
can you have screened?
can he have screened?
can we have screened?
can you have screened?
can they have screened? 	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-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not screen?
can you not screen?
can he not screen?
can we not screen?
can you not screen?
can they not screen? 	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? 	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? 	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?