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