Conjugação do verbo inglês
COULD BARK

Verbo regular: bark - barked - barked

Afirmação

Forma simple	Forma com V-ing
I could bark you could bark he could bark we could bark you could bark they could bark	I could be barking you could be barking he could be barking we could be barking you could be barking they could be barking
Perfeito	Perfeito com V-ing
I could have barked you could have barked he could have barked we could have barked you could have barked they could have barked	I could have been barking you could have been barking he could have been barking we could have been barking you could have been barking they could have been barking

Negação

Forma simple	Forma com V-ing
I could not bark you could not bark he could not bark we could not bark you could not bark they could not bark	I could not be barking you could not be barking he could not be barking we could not be barking you could not be barking they could not be barking
Perfeito	Perfeito com V-ing
I could not have barked you could not have barked he could not have barked we could not have barked you could not have barked they could not have barked	I could not have been barking you could not have been barking he could not have been barking we could not have been barking you could not have been barking they could not have been barking

Forma interrogativa

Forma simple	Forma com V-ing
could I bark? could you bark? could he bark? could we bark? could you bark? could they bark?	could I be barking? could you be barking? could he be barking? could we be barking? could you be barking? could they be barking?
Perfeito	Perfeito com V-ing
could I have barked? could you have barked? could he have barked? could we have barked? could you have barked? could they have barked?	could I have been barking? could you have been barking? could he have been barking? could we have been barking? could you have been barking? could they have been barking?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not bark? could you not bark? could he not bark? could we not bark? could you not bark? could they not bark?	could I not be barking? could you not be barking? could he not be barking? could we not be barking? could you not be barking? could they not be barking?
Perfeito	Perfeito com V-ing
could I not have barked? could you not have barked? could he not have barked? could we not have barked? could you not have barked? could they not have barked?	could I not have been barking? could you not have been barking? could he not have been barking? could we not have been barking? could you not have been barking? could they not have been barking?