I must darken you must darken she must darken we must darken you must darken they must darken
Forma com V-ing
I must be darkening you must be darkening she must be darkening we must be darkening you must be darkening they must be darkening
Perfeito
I must have darkened you must have darkened she must have darkened we must have darkened you must have darkened they must have darkened
Perfeito com V-ing
I must have been darkening you must have been darkening she must have been darkening we must have been darkening you must have been darkening they must have been darkening
Negação
Forma simple
I mustn't darken you mustn't darken she mustn't darken we mustn't darken you mustn't darken they mustn't darken
Forma com V-ing
I mustn't be darkening you mustn't be darkening she mustn't be darkening we mustn't be darkening you mustn't be darkening they mustn't be darkening
Perfeito
I mustn't have darkened you mustn't have darkened she mustn't have darkened we mustn't have darkened you mustn't have darkened they mustn't have darkened
Perfeito com V-ing
I mustn't have been darkening you mustn't have been darkening she mustn't have been darkening we mustn't have been darkening you mustn't have been darkening they mustn't have been darkening
Forma interrogativa
Forma simple
must I darken? must you darken? must she darken? must we darken? must you darken? must they darken?
Forma com V-ing
must I be darkening? must you be darkening? must she be darkening? must we be darkening? must you be darkening? must they be darkening?
Perfeito
must I have darkened? must you have darkened? must she have darkened? must we have darkened? must you have darkened? must they have darkened?
Perfeito com V-ing
must I have been darkening? must you have been darkening? must she have been darkening? must we have been darkening? must you have been darkening? must they have been darkening?
Forma interro-Negação
Forma simple
mustn't I darken? mustn't you darken? mustn't she darken? mustn't we darken? mustn't you darken? mustn't they darken?
Forma com V-ing
mustn't I be darkening? mustn't you be darkening? mustn't she be darkening? mustn't we be darkening? mustn't you be darkening? mustn't they be darkening?
Perfeito
mustn't I have darkened? mustn't you have darkened? mustn't she have darkened? mustn't we have darkened? mustn't you have darkened? mustn't they have darkened?
Perfeito com V-ing
mustn't I have been darkening? mustn't you have been darkening? mustn't she have been darkening? mustn't we have been darkening? mustn't you have been darkening? mustn't they have been darkening?