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