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