I could saw you could saw he could saw we could saw you could saw they could saw
Forma con V-ing
I could be sawing you could be sawing he could be sawing we could be sawing you could be sawing they could be sawing
Perfecto
I could have sawed, sawn you could have sawed, sawn he could have sawed, sawn we could have sawed, sawn you could have sawed, sawn they could have sawed, sawn
Perfecto con V-ing
I could have been sawing you could have been sawing he could have been sawing we could have been sawing you could have been sawing they could have been sawing
Negación
Forma simple
I could not saw you could not saw he could not saw we could not saw you could not saw they could not saw
Forma con V-ing
I could not be sawing you could not be sawing he could not be sawing we could not be sawing you could not be sawing they could not be sawing
Perfecto
I could not have sawed, sawn you could not have sawed, sawn he could not have sawed, sawn we could not have sawed, sawn you could not have sawed, sawn they could not have sawed, sawn
Perfecto con V-ing
I could not have been sawing you could not have been sawing he could not have been sawing we could not have been sawing you could not have been sawing they could not have been sawing
Forma interrogativa
Forma simple
could I saw? could you saw? could he saw? could we saw? could you saw? could they saw?
Forma con V-ing
could I be sawing? could you be sawing? could he be sawing? could we be sawing? could you be sawing? could they be sawing?
Perfecto
could I have sawed, sawn? could you have sawed, sawn? could he have sawed, sawn? could we have sawed, sawn? could you have sawed, sawn? could they have sawed, sawn?
Perfecto con V-ing
could I have been sawing? could you have been sawing? could he have been sawing? could we have been sawing? could you have been sawing? could they have been sawing?
Forma interro-negativa
Forma simple
could I not saw? could you not saw? could he not saw? could we not saw? could you not saw? could they not saw?
Forma con V-ing
could I not be sawing? could you not be sawing? could he not be sawing? could we not be sawing? could you not be sawing? could they not be sawing?
Perfecto
could I not have sawed, sawn? could you not have sawed, sawn? could he not have sawed, sawn? could we not have sawed, sawn? could you not have sawed, sawn? could they not have sawed, sawn?
Perfecto con V-ing
could I not have been sawing? could you not have been sawing? could he not have been sawing? could we not have been sawing? could you not have been sawing? could they not have been sawing?