I could arrive you could arrive he could arrive we could arrive you could arrive they could arrive
Forma com V-ing
I could be arriving you could be arriving he could be arriving we could be arriving you could be arriving they could be arriving
Perfeito
I could have arrived you could have arrived he could have arrived we could have arrived you could have arrived they could have arrived
Perfeito com V-ing
I could have been arriving you could have been arriving he could have been arriving we could have been arriving you could have been arriving they could have been arriving
Negação
Forma simple
I could not arrive you could not arrive he could not arrive we could not arrive you could not arrive they could not arrive
Forma com V-ing
I could not be arriving you could not be arriving he could not be arriving we could not be arriving you could not be arriving they could not be arriving
Perfeito
I could not have arrived you could not have arrived he could not have arrived we could not have arrived you could not have arrived they could not have arrived
Perfeito com V-ing
I could not have been arriving you could not have been arriving he could not have been arriving we could not have been arriving you could not have been arriving they could not have been arriving
Forma interrogativa
Forma simple
could I arrive? could you arrive? could he arrive? could we arrive? could you arrive? could they arrive?
Forma com V-ing
could I be arriving? could you be arriving? could he be arriving? could we be arriving? could you be arriving? could they be arriving?
Perfeito
could I have arrived? could you have arrived? could he have arrived? could we have arrived? could you have arrived? could they have arrived?
Perfeito com V-ing
could I have been arriving? could you have been arriving? could he have been arriving? could we have been arriving? could you have been arriving? could they have been arriving?
Forma interro-Negação
Forma simple
could I not arrive? could you not arrive? could he not arrive? could we not arrive? could you not arrive? could they not arrive?
Forma com V-ing
could I not be arriving? could you not be arriving? could he not be arriving? could we not be arriving? could you not be arriving? could they not be arriving?
Perfeito
could I not have arrived? could you not have arrived? could he not have arrived? could we not have arrived? could you not have arrived? could they not have arrived?
Perfeito com V-ing
could I not have been arriving? could you not have been arriving? could he not have been arriving? could we not have been arriving? could you not have been arriving? could they not have been arriving?