I must question you must question she must question we must question you must question they must question
Forma con V-ing
I must be questioning you must be questioning she must be questioning we must be questioning you must be questioning they must be questioning
Perfecto
I must have questioned you must have questioned she 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 she must have been questioning we must have been questioning you must have been questioning they must have been questioning
Negación
Forma simple
I must not question you must not question she must not question we must not question you must not question they must not question
Forma con V-ing
I must not be questioning you must not be questioning she must not be questioning we must not be questioning you must not be questioning they must not be questioning
Perfecto
I must not have questioned you must not have questioned she must not have questioned we must not have questioned you must not have questioned they must not have questioned
Perfecto con V-ing
I must not have been questioning you must not have been questioning she must not have been questioning we must not have been questioning you must not have been questioning they must not have been questioning
Forma interrogativa
Forma simple
must I question? must you question? must she question? must we question? must you question? must they question?
Forma con V-ing
must I be questioning? must you be questioning? must she be questioning? must we be questioning? must you be questioning? must they be questioning?
Perfecto
must I have questioned? must you have questioned? must she 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 she have been questioning? must we have been questioning? must you have been questioning? must they have been questioning?
Forma interro-negativa
Forma simple
must I not question? must you not question? must she not question? must we not question? must you not question? must they not question?
Forma con V-ing
must I not be questioning? must you not be questioning? must she not be questioning? must we not be questioning? must you not be questioning? must they not be questioning?
Perfecto
must I not have questioned? must you not have questioned? must she not have questioned? must we not have questioned? must you not have questioned? must they not have questioned?
Perfecto con V-ing
must I not have been questioning? must you not have been questioning? must she not have been questioning? must we not have been questioning? must you not have been questioning? must they not have been questioning?