I must revise you must revise he must revise we must revise you must revise they must revise
Forma con V-ing
I must be revising you must be revising he must be revising we must be revising you must be revising they must be revising
Perfecto
I must have revised you must have revised he must have revised we must have revised you must have revised they must have revised
Perfecto con V-ing
I must have been revising you must have been revising he must have been revising we must have been revising you must have been revising they must have been revising
Negación
Forma simple
I mustn't revise you mustn't revise he mustn't revise we mustn't revise you mustn't revise they mustn't revise
Forma con V-ing
I mustn't be revising you mustn't be revising he mustn't be revising we mustn't be revising you mustn't be revising they mustn't be revising
Perfecto
I mustn't have revised you mustn't have revised he mustn't have revised we mustn't have revised you mustn't have revised they mustn't have revised
Perfecto con V-ing
I mustn't have been revising you mustn't have been revising he mustn't have been revising we mustn't have been revising you mustn't have been revising they mustn't have been revising
Forma interrogativa
Forma simple
must I revise? must you revise? must he revise? must we revise? must you revise? must they revise?
Forma con V-ing
must I be revising? must you be revising? must he be revising? must we be revising? must you be revising? must they be revising?
Perfecto
must I have revised? must you have revised? must he have revised? must we have revised? must you have revised? must they have revised?
Perfecto con V-ing
must I have been revising? must you have been revising? must he have been revising? must we have been revising? must you have been revising? must they have been revising?
Forma interro-negativa
Forma simple
mustn't I revise? mustn't you revise? mustn't he revise? mustn't we revise? mustn't you revise? mustn't they revise?
Forma con V-ing
mustn't I be revising? mustn't you be revising? mustn't he be revising? mustn't we be revising? mustn't you be revising? mustn't they be revising?
Perfecto
mustn't I have revised? mustn't you have revised? mustn't he have revised? mustn't we have revised? mustn't you have revised? mustn't they have revised?
Perfecto con V-ing
mustn't I have been revising? mustn't you have been revising? mustn't he have been revising? mustn't we have been revising? mustn't you have been revising? mustn't they have been revising?