I must smear you must smear she must smear we must smear you must smear they must smear
Forma con V-ing
I must be smearing you must be smearing she must be smearing we must be smearing you must be smearing they must be smearing
Perfecto
I must have smeared you must have smeared she must have smeared we must have smeared you must have smeared they must have smeared
Perfecto con V-ing
I must have been smearing you must have been smearing she must have been smearing we must have been smearing you must have been smearing they must have been smearing
Negación
Forma simple
I must not smear you must not smear she must not smear we must not smear you must not smear they must not smear
Forma con V-ing
I must not be smearing you must not be smearing she must not be smearing we must not be smearing you must not be smearing they must not be smearing
Perfecto
I must not have smeared you must not have smeared she must not have smeared we must not have smeared you must not have smeared they must not have smeared
Perfecto con V-ing
I must not have been smearing you must not have been smearing she must not have been smearing we must not have been smearing you must not have been smearing they must not have been smearing
Forma interrogativa
Forma simple
must I smear? must you smear? must she smear? must we smear? must you smear? must they smear?
Forma con V-ing
must I be smearing? must you be smearing? must she be smearing? must we be smearing? must you be smearing? must they be smearing?
Perfecto
must I have smeared? must you have smeared? must she have smeared? must we have smeared? must you have smeared? must they have smeared?
Perfecto con V-ing
must I have been smearing? must you have been smearing? must she have been smearing? must we have been smearing? must you have been smearing? must they have been smearing?
Forma interro-negativa
Forma simple
must I not smear? must you not smear? must she not smear? must we not smear? must you not smear? must they not smear?
Forma con V-ing
must I not be smearing? must you not be smearing? must she not be smearing? must we not be smearing? must you not be smearing? must they not be smearing?
Perfecto
must I not have smeared? must you not have smeared? must she not have smeared? must we not have smeared? must you not have smeared? must they not have smeared?
Perfecto con V-ing
must I not have been smearing? must you not have been smearing? must she not have been smearing? must we not have been smearing? must you not have been smearing? must they not have been smearing?