I must double you must double she must double we must double you must double they must double
Forma com V-ing
I must be doubling you must be doubling she must be doubling we must be doubling you must be doubling they must be doubling
Perfeito
I must have doubled you must have doubled she must have doubled we must have doubled you must have doubled they must have doubled
Perfeito com V-ing
I must have been doubling you must have been doubling she must have been doubling we must have been doubling you must have been doubling they must have been doubling
Negação
Forma simple
I mustn't double you mustn't double she mustn't double we mustn't double you mustn't double they mustn't double
Forma com V-ing
I mustn't be doubling you mustn't be doubling she mustn't be doubling we mustn't be doubling you mustn't be doubling they mustn't be doubling
Perfeito
I mustn't have doubled you mustn't have doubled she mustn't have doubled we mustn't have doubled you mustn't have doubled they mustn't have doubled
Perfeito com V-ing
I mustn't have been doubling you mustn't have been doubling she mustn't have been doubling we mustn't have been doubling you mustn't have been doubling they mustn't have been doubling
Forma interrogativa
Forma simple
must I double? must you double? must she double? must we double? must you double? must they double?
Forma com V-ing
must I be doubling? must you be doubling? must she be doubling? must we be doubling? must you be doubling? must they be doubling?
Perfeito
must I have doubled? must you have doubled? must she have doubled? must we have doubled? must you have doubled? must they have doubled?
Perfeito com V-ing
must I have been doubling? must you have been doubling? must she have been doubling? must we have been doubling? must you have been doubling? must they have been doubling?
Forma interro-Negação
Forma simple
mustn't I double? mustn't you double? mustn't she double? mustn't we double? mustn't you double? mustn't they double?
Forma com V-ing
mustn't I be doubling? mustn't you be doubling? mustn't she be doubling? mustn't we be doubling? mustn't you be doubling? mustn't they be doubling?
Perfeito
mustn't I have doubled? mustn't you have doubled? mustn't she have doubled? mustn't we have doubled? mustn't you have doubled? mustn't they have doubled?
Perfeito com V-ing
mustn't I have been doubling? mustn't you have been doubling? mustn't she have been doubling? mustn't we have been doubling? mustn't you have been doubling? mustn't they have been doubling?