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