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