I must reform you must reform he must reform we must reform you must reform they must reform
Forma con V-ing
I must be reforming you must be reforming he must be reforming we must be reforming you must be reforming they must be reforming
Perfecto
I must have reformed you must have reformed he must have reformed we must have reformed you must have reformed they must have reformed
Perfecto con V-ing
I must have been reforming you must have been reforming he must have been reforming we must have been reforming you must have been reforming they must have been reforming
Negación
Forma simple
I must not reform you must not reform he must not reform we must not reform you must not reform they must not reform
Forma con V-ing
I must not be reforming you must not be reforming he must not be reforming we must not be reforming you must not be reforming they must not be reforming
Perfecto
I must not have reformed you must not have reformed he must not have reformed we must not have reformed you must not have reformed they must not have reformed
Perfecto con V-ing
I must not have been reforming you must not have been reforming he must not have been reforming we must not have been reforming you must not have been reforming they must not have been reforming
Forma interrogativa
Forma simple
must I reform? must you reform? must he reform? must we reform? must you reform? must they reform?
Forma con V-ing
must I be reforming? must you be reforming? must he be reforming? must we be reforming? must you be reforming? must they be reforming?
Perfecto
must I have reformed? must you have reformed? must he have reformed? must we have reformed? must you have reformed? must they have reformed?
Perfecto con V-ing
must I have been reforming? must you have been reforming? must he have been reforming? must we have been reforming? must you have been reforming? must they have been reforming?
Forma interro-negativa
Forma simple
must I not reform? must you not reform? must he not reform? must we not reform? must you not reform? must they not reform?
Forma con V-ing
must I not be reforming? must you not be reforming? must he not be reforming? must we not be reforming? must you not be reforming? must they not be reforming?
Perfecto
must I not have reformed? must you not have reformed? must he not have reformed? must we not have reformed? must you not have reformed? must they not have reformed?
Perfecto con V-ing
must I not have been reforming? must you not have been reforming? must he not have been reforming? must we not have been reforming? must you not have been reforming? must they not have been reforming?