I must hum you must hum she must hum we must hum you must hum they must hum
Forma con V-ing
I must be huming you must be huming she must be huming we must be huming you must be huming they must be huming
Perfecto
I must have humed you must have humed she must have humed we must have humed you must have humed they must have humed
Perfecto con V-ing
I must have been huming you must have been huming she must have been huming we must have been huming you must have been huming they must have been huming
Negación
Forma simple
I mustn't hum you mustn't hum she mustn't hum we mustn't hum you mustn't hum they mustn't hum
Forma con V-ing
I mustn't be huming you mustn't be huming she mustn't be huming we mustn't be huming you mustn't be huming they mustn't be huming
Perfecto
I mustn't have humed you mustn't have humed she mustn't have humed we mustn't have humed you mustn't have humed they mustn't have humed
Perfecto con V-ing
I mustn't have been huming you mustn't have been huming she mustn't have been huming we mustn't have been huming you mustn't have been huming they mustn't have been huming
Forma interrogativa
Forma simple
must I hum? must you hum? must she hum? must we hum? must you hum? must they hum?
Forma con V-ing
must I be huming? must you be huming? must she be huming? must we be huming? must you be huming? must they be huming?
Perfecto
must I have humed? must you have humed? must she have humed? must we have humed? must you have humed? must they have humed?
Perfecto con V-ing
must I have been huming? must you have been huming? must she have been huming? must we have been huming? must you have been huming? must they have been huming?
Forma interro-negativa
Forma simple
mustn't I hum? mustn't you hum? mustn't she hum? mustn't we hum? mustn't you hum? mustn't they hum?
Forma con V-ing
mustn't I be huming? mustn't you be huming? mustn't she be huming? mustn't we be huming? mustn't you be huming? mustn't they be huming?
Perfecto
mustn't I have humed? mustn't you have humed? mustn't she have humed? mustn't we have humed? mustn't you have humed? mustn't they have humed?
Perfecto con V-ing
mustn't I have been huming? mustn't you have been huming? mustn't she have been huming? mustn't we have been huming? mustn't you have been huming? mustn't they have been huming?