I must notice you must notice he must notice we must notice you must notice they must notice
Forma con V-ing
I must be noticing you must be noticing he must be noticing we must be noticing you must be noticing they must be noticing
Perfecto
I must have noticed you must have noticed he must have noticed we must have noticed you must have noticed they must have noticed
Perfecto con V-ing
I must have been noticing you must have been noticing he must have been noticing we must have been noticing you must have been noticing they must have been noticing
Negación
Forma simple
I must not notice you must not notice he must not notice we must not notice you must not notice they must not notice
Forma con V-ing
I must not be noticing you must not be noticing he must not be noticing we must not be noticing you must not be noticing they must not be noticing
Perfecto
I must not have noticed you must not have noticed he must not have noticed we must not have noticed you must not have noticed they must not have noticed
Perfecto con V-ing
I must not have been noticing you must not have been noticing he must not have been noticing we must not have been noticing you must not have been noticing they must not have been noticing
Forma interrogativa
Forma simple
must I notice? must you notice? must he notice? must we notice? must you notice? must they notice?
Forma con V-ing
must I be noticing? must you be noticing? must he be noticing? must we be noticing? must you be noticing? must they be noticing?
Perfecto
must I have noticed? must you have noticed? must he have noticed? must we have noticed? must you have noticed? must they have noticed?
Perfecto con V-ing
must I have been noticing? must you have been noticing? must he have been noticing? must we have been noticing? must you have been noticing? must they have been noticing?
Forma interro-negativa
Forma simple
must I not notice? must you not notice? must he not notice? must we not notice? must you not notice? must they not notice?
Forma con V-ing
must I not be noticing? must you not be noticing? must he not be noticing? must we not be noticing? must you not be noticing? must they not be noticing?
Perfecto
must I not have noticed? must you not have noticed? must he not have noticed? must we not have noticed? must you not have noticed? must they not have noticed?
Perfecto con V-ing
must I not have been noticing? must you not have been noticing? must he not have been noticing? must we not have been noticing? must you not have been noticing? must they not have been noticing?