I can barn you can barn she can barn we can barn you can barn they can barn
Forma com V-ing
I can be barning you can be barning she can be barning we can be barning you can be barning they can be barning
Perfeito
I can have barned you can have barned she can have barned we can have barned you can have barned they can have barned
Perfeito com V-ing
I can have been barning you can have been barning she can have been barning we can have been barning you can have been barning they can have been barning
Negação
Forma simple
I cannot barn you cannot barn she cannot barn we cannot barn you cannot barn they cannot barn
Forma com V-ing
I cannot be barning you cannot be barning she cannot be barning we cannot be barning you cannot be barning they cannot be barning
Perfeito
I cannot have barned you cannot have barned she cannot have barned we cannot have barned you cannot have barned they cannot have barned
Perfeito com V-ing
I cannot have been barning you cannot have been barning she cannot have been barning we cannot have been barning you cannot have been barning they cannot have been barning
Forma interrogativa
Forma simple
can I barn? can you barn? can she barn? can we barn? can you barn? can they barn?
Forma com V-ing
can I be barning? can you be barning? can she be barning? can we be barning? can you be barning? can they be barning?
Perfeito
can I have barned? can you have barned? can she have barned? can we have barned? can you have barned? can they have barned?
Perfeito com V-ing
can I have been barning? can you have been barning? can she have been barning? can we have been barning? can you have been barning? can they have been barning?
Forma interro-Negação
Forma simple
can I not barn? can you not barn? can she not barn? can we not barn? can you not barn? can they not barn?
Forma com V-ing
can I not be barning? can you not be barning? can she not be barning? can we not be barning? can you not be barning? can they not be barning?
Perfeito
can I not have barned? can you not have barned? can she not have barned? can we not have barned? can you not have barned? can they not have barned?
Perfeito com V-ing
can I not have been barning? can you not have been barning? can she not have been barning? can we not have been barning? can you not have been barning? can they not have been barning?