I must double you must double he must double we must double you must double they must double
Forma con V-ing
I must be doubling you must be doubling he must be doubling we must be doubling you must be doubling they must be doubling
Perfecto
I must have doubled you must have doubled he must have doubled we must have doubled you must have doubled they must have doubled
Perfecto con V-ing
I must have been doubling you must have been doubling he must have been doubling we must have been doubling you must have been doubling they must have been doubling
Negación
Forma simple
I mustn't double you mustn't double he mustn't double we mustn't double you mustn't double they mustn't double
Forma con V-ing
I mustn't be doubling you mustn't be doubling he mustn't be doubling we mustn't be doubling you mustn't be doubling they mustn't be doubling
Perfecto
I mustn't have doubled you mustn't have doubled he mustn't have doubled we mustn't have doubled you mustn't have doubled they mustn't have doubled
Perfecto con V-ing
I mustn't have been doubling you mustn't have been doubling he 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 he double? must we double? must you double? must they double?
Forma con V-ing
must I be doubling? must you be doubling? must he be doubling? must we be doubling? must you be doubling? must they be doubling?
Perfecto
must I have doubled? must you have doubled? must he have doubled? must we have doubled? must you have doubled? must they have doubled?
Perfecto con V-ing
must I have been doubling? must you have been doubling? must he have been doubling? must we have been doubling? must you have been doubling? must they have been doubling?
Forma interro-negativa
Forma simple
mustn't I double? mustn't you double? mustn't he double? mustn't we double? mustn't you double? mustn't they double?
Forma con V-ing
mustn't I be doubling? mustn't you be doubling? mustn't he be doubling? mustn't we be doubling? mustn't you be doubling? mustn't they be doubling?
Perfecto
mustn't I have doubled? mustn't you have doubled? mustn't he have doubled? mustn't we have doubled? mustn't you have doubled? mustn't they have doubled?
Perfecto con V-ing
mustn't I have been doubling? mustn't you have been doubling? mustn't he have been doubling? mustn't we have been doubling? mustn't you have been doubling? mustn't they have been doubling?