Verbo irregular: learn - learned, learnt - learned, learnt
Afirmação
Forma simple
I could learn you could learn he could learn we could learn you could learn they could learn
Forma com V-ing
I could be learning you could be learning he could be learning we could be learning you could be learning they could be learning
Perfeito
I could have learned, learnt you could have learned, learnt he could have learned, learnt we could have learned, learnt you could have learned, learnt they could have learned, learnt
Perfeito com V-ing
I could have been learning you could have been learning he could have been learning we could have been learning you could have been learning they could have been learning
Negação
Forma simple
I could not learn you could not learn he could not learn we could not learn you could not learn they could not learn
Forma com V-ing
I could not be learning you could not be learning he could not be learning we could not be learning you could not be learning they could not be learning
Perfeito
I could not have learned, learnt you could not have learned, learnt he could not have learned, learnt we could not have learned, learnt you could not have learned, learnt they could not have learned, learnt
Perfeito com V-ing
I could not have been learning you could not have been learning he could not have been learning we could not have been learning you could not have been learning they could not have been learning
Forma interrogativa
Forma simple
could I learn? could you learn? could he learn? could we learn? could you learn? could they learn?
Forma com V-ing
could I be learning? could you be learning? could he be learning? could we be learning? could you be learning? could they be learning?
Perfeito
could I have learned, learnt? could you have learned, learnt? could he have learned, learnt? could we have learned, learnt? could you have learned, learnt? could they have learned, learnt?
Perfeito com V-ing
could I have been learning? could you have been learning? could he have been learning? could we have been learning? could you have been learning? could they have been learning?
Forma interro-Negação
Forma simple
could I not learn? could you not learn? could he not learn? could we not learn? could you not learn? could they not learn?
Forma com V-ing
could I not be learning? could you not be learning? could he not be learning? could we not be learning? could you not be learning? could they not be learning?
Perfeito
could I not have learned, learnt? could you not have learned, learnt? could he not have learned, learnt? could we not have learned, learnt? could you not have learned, learnt? could they not have learned, learnt?
Perfeito com V-ing
could I not have been learning? could you not have been learning? could he not have been learning? could we not have been learning? could you not have been learning? could they not have been learning?