Verbo regular: frustrate - frustrated - frustrated
Afirmación
Forma simple
I must frustrate you must frustrate he must frustrate we must frustrate you must frustrate they must frustrate
Forma con V-ing
I must be frustrating you must be frustrating he must be frustrating we must be frustrating you must be frustrating they must be frustrating
Perfecto
I must have frustrated you must have frustrated he must have frustrated we must have frustrated you must have frustrated they must have frustrated
Perfecto con V-ing
I must have been frustrating you must have been frustrating he must have been frustrating we must have been frustrating you must have been frustrating they must have been frustrating
Negación
Forma simple
I must not frustrate you must not frustrate he must not frustrate we must not frustrate you must not frustrate they must not frustrate
Forma con V-ing
I must not be frustrating you must not be frustrating he must not be frustrating we must not be frustrating you must not be frustrating they must not be frustrating
Perfecto
I must not have frustrated you must not have frustrated he must not have frustrated we must not have frustrated you must not have frustrated they must not have frustrated
Perfecto con V-ing
I must not have been frustrating you must not have been frustrating he must not have been frustrating we must not have been frustrating you must not have been frustrating they must not have been frustrating
Forma interrogativa
Forma simple
must I frustrate? must you frustrate? must he frustrate? must we frustrate? must you frustrate? must they frustrate?
Forma con V-ing
must I be frustrating? must you be frustrating? must he be frustrating? must we be frustrating? must you be frustrating? must they be frustrating?
Perfecto
must I have frustrated? must you have frustrated? must he have frustrated? must we have frustrated? must you have frustrated? must they have frustrated?
Perfecto con V-ing
must I have been frustrating? must you have been frustrating? must he have been frustrating? must we have been frustrating? must you have been frustrating? must they have been frustrating?
Forma interro-negativa
Forma simple
must I not frustrate? must you not frustrate? must he not frustrate? must we not frustrate? must you not frustrate? must they not frustrate?
Forma con V-ing
must I not be frustrating? must you not be frustrating? must he not be frustrating? must we not be frustrating? must you not be frustrating? must they not be frustrating?
Perfecto
must I not have frustrated? must you not have frustrated? must he not have frustrated? must we not have frustrated? must you not have frustrated? must they not have frustrated?
Perfecto con V-ing
must I not have been frustrating? must you not have been frustrating? must he not have been frustrating? must we not have been frustrating? must you not have been frustrating? must they not have been frustrating?