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