I could gradate you could gradate he could gradate we could gradate you could gradate they could gradate
Forma com V-ing
I could be gradating you could be gradating he could be gradating we could be gradating you could be gradating they could be gradating
Perfeito
I could have gradated you could have gradated he could have gradated we could have gradated you could have gradated they could have gradated
Perfeito com V-ing
I could have been gradating you could have been gradating he could have been gradating we could have been gradating you could have been gradating they could have been gradating
Negação
Forma simple
I couldn't gradate you couldn't gradate he couldn't gradate we couldn't gradate you couldn't gradate they couldn't gradate
Forma com V-ing
I couldn't be gradating you couldn't be gradating he couldn't be gradating we couldn't be gradating you couldn't be gradating they couldn't be gradating
Perfeito
I couldn't have gradated you couldn't have gradated he couldn't have gradated we couldn't have gradated you couldn't have gradated they couldn't have gradated
Perfeito com V-ing
I couldn't have been gradating you couldn't have been gradating he couldn't have been gradating we couldn't have been gradating you couldn't have been gradating they couldn't have been gradating
Forma interrogativa
Forma simple
could I gradate? could you gradate? could he gradate? could we gradate? could you gradate? could they gradate?
Forma com V-ing
could I be gradating? could you be gradating? could he be gradating? could we be gradating? could you be gradating? could they be gradating?
Perfeito
could I have gradated? could you have gradated? could he have gradated? could we have gradated? could you have gradated? could they have gradated?
Perfeito com V-ing
could I have been gradating? could you have been gradating? could he have been gradating? could we have been gradating? could you have been gradating? could they have been gradating?
Forma interro-Negação
Forma simple
couldn't I gradate? couldn't you gradate? couldn't he gradate? couldn't we gradate? couldn't you gradate? couldn't they gradate?
Forma com V-ing
couldn't I be gradating? couldn't you be gradating? couldn't he be gradating? couldn't we be gradating? couldn't you be gradating? couldn't they be gradating?
Perfeito
couldn't I have gradated? couldn't you have gradated? couldn't he have gradated? couldn't we have gradated? couldn't you have gradated? couldn't they have gradated?
Perfeito com V-ing
couldn't I have been gradating? couldn't you have been gradating? couldn't he have been gradating? couldn't we have been gradating? couldn't you have been gradating? couldn't they have been gradating?