I must sign you must sign he must sign we must sign you must sign they must sign
Forma con V-ing
I must be signing you must be signing he must be signing we must be signing you must be signing they must be signing
Perfetto
I must have signed you must have signed he must have signed we must have signed you must have signed they must have signed
Perfetto con V-ing
I must have been signing you must have been signing he must have been signing we must have been signing you must have been signing they must have been signing
Negazione
Forma semplice
I mustn't sign you mustn't sign he mustn't sign we mustn't sign you mustn't sign they mustn't sign
Forma con V-ing
I mustn't be signing you mustn't be signing he mustn't be signing we mustn't be signing you mustn't be signing they mustn't be signing
Perfetto
I mustn't have signed you mustn't have signed he mustn't have signed we mustn't have signed you mustn't have signed they mustn't have signed
Perfetto con V-ing
I mustn't have been signing you mustn't have been signing he mustn't have been signing we mustn't have been signing you mustn't have been signing they mustn't have been signing
Forma interrogativa
Forma semplice
must I sign? must you sign? must he sign? must we sign? must you sign? must they sign?
Forma con V-ing
must I be signing? must you be signing? must he be signing? must we be signing? must you be signing? must they be signing?
Perfetto
must I have signed? must you have signed? must he have signed? must we have signed? must you have signed? must they have signed?
Perfetto con V-ing
must I have been signing? must you have been signing? must he have been signing? must we have been signing? must you have been signing? must they have been signing?
Forma interro-negativa
Forma semplice
mustn't I sign? mustn't you sign? mustn't he sign? mustn't we sign? mustn't you sign? mustn't they sign?
Forma con V-ing
mustn't I be signing? mustn't you be signing? mustn't he be signing? mustn't we be signing? mustn't you be signing? mustn't they be signing?
Perfetto
mustn't I have signed? mustn't you have signed? mustn't he have signed? mustn't we have signed? mustn't you have signed? mustn't they have signed?
Perfetto con V-ing
mustn't I have been signing? mustn't you have been signing? mustn't he have been signing? mustn't we have been signing? mustn't you have been signing? mustn't they have been signing?