I must persevere you must persevere he must persevere we must persevere you must persevere they must persevere
Forme en 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
Perfect
I must have persevered you must have persevered he must have persevered we must have persevered you must have persevered they must have persevered
Perfect en 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
Négation
Forme 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
Forme en 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
Perfect
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
Perfect en 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
Forme interrogative
Forme simple
must I persevere? must you persevere? must he persevere? must we persevere? must you persevere? must they persevere?
Forme en 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?
Perfect
must I have persevered? must you have persevered? must he have persevered? must we have persevered? must you have persevered? must they have persevered?
Perfect en 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?
Forme interro-négative
Forme 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?
Forme en 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?
Perfect
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?
Perfect en 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?