I must ask you must ask he must ask we must ask you must ask they must ask
Forma con V-ing
I must be asking you must be asking he must be asking we must be asking you must be asking they must be asking
Perfecto
I must have asked you must have asked he must have asked we must have asked you must have asked they must have asked
Perfecto con V-ing
I must have been asking you must have been asking he must have been asking we must have been asking you must have been asking they must have been asking
Negación
Forma simple
I mustn't ask you mustn't ask he mustn't ask we mustn't ask you mustn't ask they mustn't ask
Forma con V-ing
I mustn't be asking you mustn't be asking he mustn't be asking we mustn't be asking you mustn't be asking they mustn't be asking
Perfecto
I mustn't have asked you mustn't have asked he mustn't have asked we mustn't have asked you mustn't have asked they mustn't have asked
Perfecto con V-ing
I mustn't have been asking you mustn't have been asking he mustn't have been asking we mustn't have been asking you mustn't have been asking they mustn't have been asking
Forma interrogativa
Forma simple
must I ask? must you ask? must he ask? must we ask? must you ask? must they ask?
Forma con V-ing
must I be asking? must you be asking? must he be asking? must we be asking? must you be asking? must they be asking?
Perfecto
must I have asked? must you have asked? must he have asked? must we have asked? must you have asked? must they have asked?
Perfecto con V-ing
must I have been asking? must you have been asking? must he have been asking? must we have been asking? must you have been asking? must they have been asking?
Forma interro-negativa
Forma simple
mustn't I ask? mustn't you ask? mustn't he ask? mustn't we ask? mustn't you ask? mustn't they ask?
Forma con V-ing
mustn't I be asking? mustn't you be asking? mustn't he be asking? mustn't we be asking? mustn't you be asking? mustn't they be asking?
Perfecto
mustn't I have asked? mustn't you have asked? mustn't he have asked? mustn't we have asked? mustn't you have asked? mustn't they have asked?
Perfecto con V-ing
mustn't I have been asking? mustn't you have been asking? mustn't he have been asking? mustn't we have been asking? mustn't you have been asking? mustn't they have been asking?