I could film you could film he could film we could film you could film they could film
Forma com V-ing
I could be filming you could be filming he could be filming we could be filming you could be filming they could be filming
Perfeito
I could have filmed you could have filmed he could have filmed we could have filmed you could have filmed they could have filmed
Perfeito com V-ing
I could have been filming you could have been filming he could have been filming we could have been filming you could have been filming they could have been filming
Negação
Forma simple
I could not film you could not film he could not film we could not film you could not film they could not film
Forma com V-ing
I could not be filming you could not be filming he could not be filming we could not be filming you could not be filming they could not be filming
Perfeito
I could not have filmed you could not have filmed he could not have filmed we could not have filmed you could not have filmed they could not have filmed
Perfeito com V-ing
I could not have been filming you could not have been filming he could not have been filming we could not have been filming you could not have been filming they could not have been filming
Forma interrogativa
Forma simple
could I film? could you film? could he film? could we film? could you film? could they film?
Forma com V-ing
could I be filming? could you be filming? could he be filming? could we be filming? could you be filming? could they be filming?
Perfeito
could I have filmed? could you have filmed? could he have filmed? could we have filmed? could you have filmed? could they have filmed?
Perfeito com V-ing
could I have been filming? could you have been filming? could he have been filming? could we have been filming? could you have been filming? could they have been filming?
Forma interro-Negação
Forma simple
could I not film? could you not film? could he not film? could we not film? could you not film? could they not film?
Forma com V-ing
could I not be filming? could you not be filming? could he not be filming? could we not be filming? could you not be filming? could they not be filming?
Perfeito
could I not have filmed? could you not have filmed? could he not have filmed? could we not have filmed? could you not have filmed? could they not have filmed?
Perfeito com V-ing
could I not have been filming? could you not have been filming? could he not have been filming? could we not have been filming? could you not have been filming? could they not have been filming?