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