I must blush you must blush he must blush we must blush you must blush they must blush
Forma con V-ing
I must be blushing you must be blushing he must be blushing we must be blushing you must be blushing they must be blushing
Perfecto
I must have blushed you must have blushed he must have blushed we must have blushed you must have blushed they must have blushed
Perfecto con V-ing
I must have been blushing you must have been blushing he must have been blushing we must have been blushing you must have been blushing they must have been blushing
Negación
Forma simple
I must not blush you must not blush he must not blush we must not blush you must not blush they must not blush
Forma con V-ing
I must not be blushing you must not be blushing he must not be blushing we must not be blushing you must not be blushing they must not be blushing
Perfecto
I must not have blushed you must not have blushed he must not have blushed we must not have blushed you must not have blushed they must not have blushed
Perfecto con V-ing
I must not have been blushing you must not have been blushing he must not have been blushing we must not have been blushing you must not have been blushing they must not have been blushing
Forma interrogativa
Forma simple
must I blush? must you blush? must he blush? must we blush? must you blush? must they blush?
Forma con V-ing
must I be blushing? must you be blushing? must he be blushing? must we be blushing? must you be blushing? must they be blushing?
Perfecto
must I have blushed? must you have blushed? must he have blushed? must we have blushed? must you have blushed? must they have blushed?
Perfecto con V-ing
must I have been blushing? must you have been blushing? must he have been blushing? must we have been blushing? must you have been blushing? must they have been blushing?
Forma interro-negativa
Forma simple
must I not blush? must you not blush? must he not blush? must we not blush? must you not blush? must they not blush?
Forma con V-ing
must I not be blushing? must you not be blushing? must he not be blushing? must we not be blushing? must you not be blushing? must they not be blushing?
Perfecto
must I not have blushed? must you not have blushed? must he not have blushed? must we not have blushed? must you not have blushed? must they not have blushed?
Perfecto con V-ing
must I not have been blushing? must you not have been blushing? must he not have been blushing? must we not have been blushing? must you not have been blushing? must they not have been blushing?