I can bark you can bark she can bark we can bark you can bark they can bark
Forma com V-ing
I can be barking you can be barking she can be barking we can be barking you can be barking they can be barking
Perfeito
I can have barked you can have barked she can have barked we can have barked you can have barked they can have barked
Perfeito com V-ing
I can have been barking you can have been barking she can have been barking we can have been barking you can have been barking they can have been barking
Negação
Forma simple
I can't bark you can't bark she can't bark we can't bark you can't bark they can't bark
Forma com V-ing
I can't be barking you can't be barking she can't be barking we can't be barking you can't be barking they can't be barking
Perfeito
I can't have barked you can't have barked she can't have barked we can't have barked you can't have barked they can't have barked
Perfeito com V-ing
I can't have been barking you can't have been barking she can't have been barking we can't have been barking you can't have been barking they can't have been barking
Forma interrogativa
Forma simple
can I bark? can you bark? can she bark? can we bark? can you bark? can they bark?
Forma com V-ing
can I be barking? can you be barking? can she be barking? can we be barking? can you be barking? can they be barking?
Perfeito
can I have barked? can you have barked? can she have barked? can we have barked? can you have barked? can they have barked?
Perfeito com V-ing
can I have been barking? can you have been barking? can she have been barking? can we have been barking? can you have been barking? can they have been barking?
Forma interro-Negação
Forma simple
can't I bark? can't you bark? can't she bark? can't we bark? can't you bark? can't they bark?
Forma com V-ing
can't I be barking? can't you be barking? can't she be barking? can't we be barking? can't you be barking? can't they be barking?
Perfeito
can't I have barked? can't you have barked? can't she have barked? can't we have barked? can't you have barked? can't they have barked?
Perfeito com V-ing
can't I have been barking? can't you have been barking? can't she have been barking? can't we have been barking? can't you have been barking? can't they have been barking?