I must double you must double she must double we must double you must double they must double
Forma con 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
Perfecto
I must have doubled you must have doubled she 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 she must have been doubling we must have been doubling you must have been doubling they must have been doubling
Negación
Forma simple
I must not double you must not double she must not double we must not double you must not double they must not double
Forma con V-ing
I must not be doubling you must not be doubling she must not be doubling we must not be doubling you must not be doubling they must not be doubling
Perfecto
I must not have doubled you must not have doubled she must not have doubled we must not have doubled you must not have doubled they must not have doubled
Perfecto con V-ing
I must not have been doubling you must not have been doubling she must not have been doubling we must not have been doubling you must not have been doubling they must not 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 con 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?
Perfecto
must I have doubled? must you have doubled? must she 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 she have been doubling? must we have been doubling? must you have been doubling? must they have been doubling?
Forma interro-negativa
Forma simple
must I not double? must you not double? must she not double? must we not double? must you not double? must they not double?
Forma con V-ing
must I not be doubling? must you not be doubling? must she not be doubling? must we not be doubling? must you not be doubling? must they not be doubling?
Perfecto
must I not have doubled? must you not have doubled? must she not have doubled? must we not have doubled? must you not have doubled? must they not have doubled?
Perfecto con V-ing
must I not have been doubling? must you not have been doubling? must she not have been doubling? must we not have been doubling? must you not have been doubling? must they not have been doubling?