I could begin you could begin she could begin we could begin you could begin they could begin
Forma com V-ing
I could be beginning you could be beginning she could be beginning we could be beginning you could be beginning they could be beginning
Perfeito
I could have begun you could have begun she could have begun we could have begun you could have begun they could have begun
Perfeito com V-ing
I could have been beginning you could have been beginning she could have been beginning we could have been beginning you could have been beginning they could have been beginning
Negação
Forma simple
I could not begin you could not begin she could not begin we could not begin you could not begin they could not begin
Forma com V-ing
I could not be beginning you could not be beginning she could not be beginning we could not be beginning you could not be beginning they could not be beginning
Perfeito
I could not have begun you could not have begun she could not have begun we could not have begun you could not have begun they could not have begun
Perfeito com V-ing
I could not have been beginning you could not have been beginning she could not have been beginning we could not have been beginning you could not have been beginning they could not have been beginning
Forma interrogativa
Forma simple
could I begin? could you begin? could she begin? could we begin? could you begin? could they begin?
Forma com V-ing
could I be beginning? could you be beginning? could she be beginning? could we be beginning? could you be beginning? could they be beginning?
Perfeito
could I have begun? could you have begun? could she have begun? could we have begun? could you have begun? could they have begun?
Perfeito com V-ing
could I have been beginning? could you have been beginning? could she have been beginning? could we have been beginning? could you have been beginning? could they have been beginning?
Forma interro-Negação
Forma simple
could I not begin? could you not begin? could she not begin? could we not begin? could you not begin? could they not begin?
Forma com V-ing
could I not be beginning? could you not be beginning? could she not be beginning? could we not be beginning? could you not be beginning? could they not be beginning?
Perfeito
could I not have begun? could you not have begun? could she not have begun? could we not have begun? could you not have begun? could they not have begun?
Perfeito com V-ing
could I not have been beginning? could you not have been beginning? could she not have been beginning? could we not have been beginning? could you not have been beginning? could they not have been beginning?