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