I must treat you must treat he must treat we must treat you must treat they must treat
Forma con V-ing
I must be treating you must be treating he must be treating we must be treating you must be treating they must be treating
Perfecto
I must have treated you must have treated he must have treated we must have treated you must have treated they must have treated
Perfecto con V-ing
I must have been treating you must have been treating he must have been treating we must have been treating you must have been treating they must have been treating
Negación
Forma simple
I must not treat you must not treat he must not treat we must not treat you must not treat they must not treat
Forma con V-ing
I must not be treating you must not be treating he must not be treating we must not be treating you must not be treating they must not be treating
Perfecto
I must not have treated you must not have treated he must not have treated we must not have treated you must not have treated they must not have treated
Perfecto con V-ing
I must not have been treating you must not have been treating he must not have been treating we must not have been treating you must not have been treating they must not have been treating
Forma interrogativa
Forma simple
must I treat? must you treat? must he treat? must we treat? must you treat? must they treat?
Forma con V-ing
must I be treating? must you be treating? must he be treating? must we be treating? must you be treating? must they be treating?
Perfecto
must I have treated? must you have treated? must he have treated? must we have treated? must you have treated? must they have treated?
Perfecto con V-ing
must I have been treating? must you have been treating? must he have been treating? must we have been treating? must you have been treating? must they have been treating?
Forma interro-negativa
Forma simple
must I not treat? must you not treat? must he not treat? must we not treat? must you not treat? must they not treat?
Forma con V-ing
must I not be treating? must you not be treating? must he not be treating? must we not be treating? must you not be treating? must they not be treating?
Perfecto
must I not have treated? must you not have treated? must he not have treated? must we not have treated? must you not have treated? must they not have treated?
Perfecto con V-ing
must I not have been treating? must you not have been treating? must he not have been treating? must we not have been treating? must you not have been treating? must they not have been treating?