I could begin you could begin he could begin we could begin you could begin they could begin
Forma com V-ing
I could be beginning you could be beginning he could be beginning we could be beginning you could be beginning they could be beginning
Perfeito
I could have begun you could have begun he 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 he could have been beginning we could have been beginning you could have been beginning they could have been beginning
Negação
Forma simple
I couldn't begin you couldn't begin he couldn't begin we couldn't begin you couldn't begin they couldn't begin
Forma com V-ing
I couldn't be beginning you couldn't be beginning he couldn't be beginning we couldn't be beginning you couldn't be beginning they couldn't be beginning
Perfeito
I couldn't have begun you couldn't have begun he couldn't have begun we couldn't have begun you couldn't have begun they couldn't have begun
Perfeito com V-ing
I couldn't have been beginning you couldn't have been beginning he couldn't have been beginning we couldn't have been beginning you couldn't have been beginning they couldn't have been beginning
Forma interrogativa
Forma simple
could I begin? could you begin? could he begin? could we begin? could you begin? could they begin?
Forma com V-ing
could I be beginning? could you be beginning? could he be beginning? could we be beginning? could you be beginning? could they be beginning?
Perfeito
could I have begun? could you have begun? could he 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 he have been beginning? could we have been beginning? could you have been beginning? could they have been beginning?
Forma interro-Negação
Forma simple
couldn't I begin? couldn't you begin? couldn't he begin? couldn't we begin? couldn't you begin? couldn't they begin?
Forma com V-ing
couldn't I be beginning? couldn't you be beginning? couldn't he be beginning? couldn't we be beginning? couldn't you be beginning? couldn't they be beginning?
Perfeito
couldn't I have begun? couldn't you have begun? couldn't he have begun? couldn't we have begun? couldn't you have begun? couldn't they have begun?
Perfeito com V-ing
couldn't I have been beginning? couldn't you have been beginning? couldn't he have been beginning? couldn't we have been beginning? couldn't you have been beginning? couldn't they have been beginning?