I must keyboard you must keyboard he must keyboard we must keyboard you must keyboard they must keyboard
Forma con V-ing
I must be keyboarding you must be keyboarding he must be keyboarding we must be keyboarding you must be keyboarding they must be keyboarding
Perfecto
I must have keyboarded you must have keyboarded he must have keyboarded we must have keyboarded you must have keyboarded they must have keyboarded
Perfecto con V-ing
I must have been keyboarding you must have been keyboarding he must have been keyboarding we must have been keyboarding you must have been keyboarding they must have been keyboarding
Negación
Forma simple
I must not keyboard you must not keyboard he must not keyboard we must not keyboard you must not keyboard they must not keyboard
Forma con V-ing
I must not be keyboarding you must not be keyboarding he must not be keyboarding we must not be keyboarding you must not be keyboarding they must not be keyboarding
Perfecto
I must not have keyboarded you must not have keyboarded he must not have keyboarded we must not have keyboarded you must not have keyboarded they must not have keyboarded
Perfecto con V-ing
I must not have been keyboarding you must not have been keyboarding he must not have been keyboarding we must not have been keyboarding you must not have been keyboarding they must not have been keyboarding
Forma interrogativa
Forma simple
must I keyboard? must you keyboard? must he keyboard? must we keyboard? must you keyboard? must they keyboard?
Forma con V-ing
must I be keyboarding? must you be keyboarding? must he be keyboarding? must we be keyboarding? must you be keyboarding? must they be keyboarding?
Perfecto
must I have keyboarded? must you have keyboarded? must he have keyboarded? must we have keyboarded? must you have keyboarded? must they have keyboarded?
Perfecto con V-ing
must I have been keyboarding? must you have been keyboarding? must he have been keyboarding? must we have been keyboarding? must you have been keyboarding? must they have been keyboarding?
Forma interro-negativa
Forma simple
must I not keyboard? must you not keyboard? must he not keyboard? must we not keyboard? must you not keyboard? must they not keyboard?
Forma con V-ing
must I not be keyboarding? must you not be keyboarding? must he not be keyboarding? must we not be keyboarding? must you not be keyboarding? must they not be keyboarding?
Perfecto
must I not have keyboarded? must you not have keyboarded? must he not have keyboarded? must we not have keyboarded? must you not have keyboarded? must they not have keyboarded?
Perfecto con V-ing
must I not have been keyboarding? must you not have been keyboarding? must he not have been keyboarding? must we not have been keyboarding? must you not have been keyboarding? must they not have been keyboarding?