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