I could act you could act he could act we could act you could act they could act
Forma com V-ing
I could be acting you could be acting he could be acting we could be acting you could be acting they could be acting
Perfeito
I could have acted you could have acted he could have acted we could have acted you could have acted they could have acted
Perfeito com V-ing
I could have been acting you could have been acting he could have been acting we could have been acting you could have been acting they could have been acting
Negação
Forma simple
I could not act you could not act he could not act we could not act you could not act they could not act
Forma com V-ing
I could not be acting you could not be acting he could not be acting we could not be acting you could not be acting they could not be acting
Perfeito
I could not have acted you could not have acted he could not have acted we could not have acted you could not have acted they could not have acted
Perfeito com V-ing
I could not have been acting you could not have been acting he could not have been acting we could not have been acting you could not have been acting they could not have been acting
Forma interrogativa
Forma simple
could I act? could you act? could he act? could we act? could you act? could they act?
Forma com V-ing
could I be acting? could you be acting? could he be acting? could we be acting? could you be acting? could they be acting?
Perfeito
could I have acted? could you have acted? could he have acted? could we have acted? could you have acted? could they have acted?
Perfeito com V-ing
could I have been acting? could you have been acting? could he have been acting? could we have been acting? could you have been acting? could they have been acting?
Forma interro-Negação
Forma simple
could I not act? could you not act? could he not act? could we not act? could you not act? could they not act?
Forma com V-ing
could I not be acting? could you not be acting? could he not be acting? could we not be acting? could you not be acting? could they not be acting?
Perfeito
could I not have acted? could you not have acted? could he not have acted? could we not have acted? could you not have acted? could they not have acted?
Perfeito com V-ing
could I not have been acting? could you not have been acting? could he not have been acting? could we not have been acting? could you not have been acting? could they not have been acting?