Conjugação do verbo inglês
COULD DARKEN

Verbo regular: darken - darkened - darkened

Afirmação

Forma simple	Forma com V-ing
I could darken you could darken he could darken we could darken you could darken they could darken	I could be darkening you could be darkening he could be darkening we could be darkening you could be darkening they could be darkening
Perfeito	Perfeito com V-ing
I could have darkened you could have darkened he could have darkened we could have darkened you could have darkened they could have darkened	I could have been darkening you could have been darkening he could have been darkening we could have been darkening you could have been darkening they could have been darkening

Negação

Forma simple	Forma com V-ing
I could not darken you could not darken he could not darken we could not darken you could not darken they could not darken	I could not be darkening you could not be darkening he could not be darkening we could not be darkening you could not be darkening they could not be darkening
Perfeito	Perfeito com V-ing
I could not have darkened you could not have darkened he could not have darkened we could not have darkened you could not have darkened they could not have darkened	I could not have been darkening you could not have been darkening he could not have been darkening we could not have been darkening you could not have been darkening they could not have been darkening

Forma interrogativa

Forma simple	Forma com V-ing
could I darken? could you darken? could he darken? could we darken? could you darken? could they darken?	could I be darkening? could you be darkening? could he be darkening? could we be darkening? could you be darkening? could they be darkening?
Perfeito	Perfeito com V-ing
could I have darkened? could you have darkened? could he have darkened? could we have darkened? could you have darkened? could they have darkened?	could I have been darkening? could you have been darkening? could he have been darkening? could we have been darkening? could you have been darkening? could they have been darkening?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not darken? could you not darken? could he not darken? could we not darken? could you not darken? could they not darken?	could I not be darkening? could you not be darkening? could he not be darkening? could we not be darkening? could you not be darkening? could they not be darkening?
Perfeito	Perfeito com V-ing
could I not have darkened? could you not have darkened? could he not have darkened? could we not have darkened? could you not have darkened? could they not have darkened?	could I not have been darkening? could you not have been darkening? could he not have been darkening? could we not have been darkening? could you not have been darkening? could they not have been darkening?