I can bark you can bark he can bark we can bark you can bark they can bark
Forma com V-ing
I can be barking you can be barking he can be barking we can be barking you can be barking they can be barking
Perfeito
I can have barked you can have barked he 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 he 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 he 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 he 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 he 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 he 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 he bark? can we bark? can you bark? can they bark?
Forma com V-ing
can I be barking? can you be barking? can he be barking? can we be barking? can you be barking? can they be barking?
Perfeito
can I have barked? can you have barked? can he 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 he 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 he 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 he 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 he 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 he have been barking? can't we have been barking? can't you have been barking? can't they have been barking?