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