I must doctor you must doctor he must doctor we must doctor you must doctor they must doctor
Forma con V-ing
I must be doctoring you must be doctoring he must be doctoring we must be doctoring you must be doctoring they must be doctoring
Perfecto
I must have doctored you must have doctored he must have doctored we must have doctored you must have doctored they must have doctored
Perfecto con V-ing
I must have been doctoring you must have been doctoring he must have been doctoring we must have been doctoring you must have been doctoring they must have been doctoring
Negación
Forma simple
I must not doctor you must not doctor he must not doctor we must not doctor you must not doctor they must not doctor
Forma con V-ing
I must not be doctoring you must not be doctoring he must not be doctoring we must not be doctoring you must not be doctoring they must not be doctoring
Perfecto
I must not have doctored you must not have doctored he must not have doctored we must not have doctored you must not have doctored they must not have doctored
Perfecto con V-ing
I must not have been doctoring you must not have been doctoring he must not have been doctoring we must not have been doctoring you must not have been doctoring they must not have been doctoring
Forma interrogativa
Forma simple
must I doctor? must you doctor? must he doctor? must we doctor? must you doctor? must they doctor?
Forma con V-ing
must I be doctoring? must you be doctoring? must he be doctoring? must we be doctoring? must you be doctoring? must they be doctoring?
Perfecto
must I have doctored? must you have doctored? must he have doctored? must we have doctored? must you have doctored? must they have doctored?
Perfecto con V-ing
must I have been doctoring? must you have been doctoring? must he have been doctoring? must we have been doctoring? must you have been doctoring? must they have been doctoring?
Forma interro-negativa
Forma simple
must I not doctor? must you not doctor? must he not doctor? must we not doctor? must you not doctor? must they not doctor?
Forma con V-ing
must I not be doctoring? must you not be doctoring? must he not be doctoring? must we not be doctoring? must you not be doctoring? must they not be doctoring?
Perfecto
must I not have doctored? must you not have doctored? must he not have doctored? must we not have doctored? must you not have doctored? must they not have doctored?
Perfecto con V-ing
must I not have been doctoring? must you not have been doctoring? must he not have been doctoring? must we not have been doctoring? must you not have been doctoring? must they not have been doctoring?