I could graduate you could graduate she could graduate we could graduate you could graduate they could graduate
Forma com V-ing
I could be graduating you could be graduating she could be graduating we could be graduating you could be graduating they could be graduating
Perfeito
I could have graduated you could have graduated she could have graduated we could have graduated you could have graduated they could have graduated
Perfeito com V-ing
I could have been graduating you could have been graduating she could have been graduating we could have been graduating you could have been graduating they could have been graduating
Negação
Forma simple
I could not graduate you could not graduate she could not graduate we could not graduate you could not graduate they could not graduate
Forma com V-ing
I could not be graduating you could not be graduating she could not be graduating we could not be graduating you could not be graduating they could not be graduating
Perfeito
I could not have graduated you could not have graduated she could not have graduated we could not have graduated you could not have graduated they could not have graduated
Perfeito com V-ing
I could not have been graduating you could not have been graduating she could not have been graduating we could not have been graduating you could not have been graduating they could not have been graduating
Forma interrogativa
Forma simple
could I graduate? could you graduate? could she graduate? could we graduate? could you graduate? could they graduate?
Forma com V-ing
could I be graduating? could you be graduating? could she be graduating? could we be graduating? could you be graduating? could they be graduating?
Perfeito
could I have graduated? could you have graduated? could she have graduated? could we have graduated? could you have graduated? could they have graduated?
Perfeito com V-ing
could I have been graduating? could you have been graduating? could she have been graduating? could we have been graduating? could you have been graduating? could they have been graduating?
Forma interro-Negação
Forma simple
could I not graduate? could you not graduate? could she not graduate? could we not graduate? could you not graduate? could they not graduate?
Forma com V-ing
could I not be graduating? could you not be graduating? could she not be graduating? could we not be graduating? could you not be graduating? could they not be graduating?
Perfeito
could I not have graduated? could you not have graduated? could she not have graduated? could we not have graduated? could you not have graduated? could they not have graduated?
Perfeito com V-ing
could I not have been graduating? could you not have been graduating? could she not have been graduating? could we not have been graduating? could you not have been graduating? could they not have been graduating?