I must stare you must stare she must stare we must stare you must stare they must stare
Forma con V-ing
I must be staring you must be staring she must be staring we must be staring you must be staring they must be staring
Perfecto
I must have stared you must have stared she must have stared we must have stared you must have stared they must have stared
Perfecto con V-ing
I must have been staring you must have been staring she must have been staring we must have been staring you must have been staring they must have been staring
Negación
Forma simple
I must not stare you must not stare she must not stare we must not stare you must not stare they must not stare
Forma con V-ing
I must not be staring you must not be staring she must not be staring we must not be staring you must not be staring they must not be staring
Perfecto
I must not have stared you must not have stared she must not have stared we must not have stared you must not have stared they must not have stared
Perfecto con V-ing
I must not have been staring you must not have been staring she must not have been staring we must not have been staring you must not have been staring they must not have been staring
Forma interrogativa
Forma simple
must I stare? must you stare? must she stare? must we stare? must you stare? must they stare?
Forma con V-ing
must I be staring? must you be staring? must she be staring? must we be staring? must you be staring? must they be staring?
Perfecto
must I have stared? must you have stared? must she have stared? must we have stared? must you have stared? must they have stared?
Perfecto con V-ing
must I have been staring? must you have been staring? must she have been staring? must we have been staring? must you have been staring? must they have been staring?
Forma interro-negativa
Forma simple
must I not stare? must you not stare? must she not stare? must we not stare? must you not stare? must they not stare?
Forma con V-ing
must I not be staring? must you not be staring? must she not be staring? must we not be staring? must you not be staring? must they not be staring?
Perfecto
must I not have stared? must you not have stared? must she not have stared? must we not have stared? must you not have stared? must they not have stared?
Perfecto con V-ing
must I not have been staring? must you not have been staring? must she not have been staring? must we not have been staring? must you not have been staring? must they not have been staring?