I must endure you must endure she must endure we must endure you must endure they must endure
Forma con V-ing
I must be enduring you must be enduring she must be enduring we must be enduring you must be enduring they must be enduring
Perfecto
I must have endured you must have endured she must have endured we must have endured you must have endured they must have endured
Perfecto con V-ing
I must have been enduring you must have been enduring she must have been enduring we must have been enduring you must have been enduring they must have been enduring
Negación
Forma simple
I must not endure you must not endure she must not endure we must not endure you must not endure they must not endure
Forma con V-ing
I must not be enduring you must not be enduring she must not be enduring we must not be enduring you must not be enduring they must not be enduring
Perfecto
I must not have endured you must not have endured she must not have endured we must not have endured you must not have endured they must not have endured
Perfecto con V-ing
I must not have been enduring you must not have been enduring she must not have been enduring we must not have been enduring you must not have been enduring they must not have been enduring
Forma interrogativa
Forma simple
must I endure? must you endure? must she endure? must we endure? must you endure? must they endure?
Forma con V-ing
must I be enduring? must you be enduring? must she be enduring? must we be enduring? must you be enduring? must they be enduring?
Perfecto
must I have endured? must you have endured? must she have endured? must we have endured? must you have endured? must they have endured?
Perfecto con V-ing
must I have been enduring? must you have been enduring? must she have been enduring? must we have been enduring? must you have been enduring? must they have been enduring?
Forma interro-negativa
Forma simple
must I not endure? must you not endure? must she not endure? must we not endure? must you not endure? must they not endure?
Forma con V-ing
must I not be enduring? must you not be enduring? must she not be enduring? must we not be enduring? must you not be enduring? must they not be enduring?
Perfecto
must I not have endured? must you not have endured? must she not have endured? must we not have endured? must you not have endured? must they not have endured?
Perfecto con V-ing
must I not have been enduring? must you not have been enduring? must she not have been enduring? must we not have been enduring? must you not have been enduring? must they not have been enduring?