I must understeer you must understeer he must understeer we must understeer you must understeer they must understeer
Forme en V-ing
I must be understeering you must be understeering he must be understeering we must be understeering you must be understeering they must be understeering
Perfect
I must have understeered you must have understeered he must have understeered we must have understeered you must have understeered they must have understeered
Perfect en V-ing
I must have been understeering you must have been understeering he must have been understeering we must have been understeering you must have been understeering they must have been understeering
Négation
Forme simple
I must not understeer you must not understeer he must not understeer we must not understeer you must not understeer they must not understeer
Forme en V-ing
I must not be understeering you must not be understeering he must not be understeering we must not be understeering you must not be understeering they must not be understeering
Perfect
I must not have understeered you must not have understeered he must not have understeered we must not have understeered you must not have understeered they must not have understeered
Perfect en V-ing
I must not have been understeering you must not have been understeering he must not have been understeering we must not have been understeering you must not have been understeering they must not have been understeering
Forme interrogative
Forme simple
must I understeer? must you understeer? must he understeer? must we understeer? must you understeer? must they understeer?
Forme en V-ing
must I be understeering? must you be understeering? must he be understeering? must we be understeering? must you be understeering? must they be understeering?
Perfect
must I have understeered? must you have understeered? must he have understeered? must we have understeered? must you have understeered? must they have understeered?
Perfect en V-ing
must I have been understeering? must you have been understeering? must he have been understeering? must we have been understeering? must you have been understeering? must they have been understeering?
Forme interro-négative
Forme simple
must I not understeer? must you not understeer? must he not understeer? must we not understeer? must you not understeer? must they not understeer?
Forme en V-ing
must I not be understeering? must you not be understeering? must he not be understeering? must we not be understeering? must you not be understeering? must they not be understeering?
Perfect
must I not have understeered? must you not have understeered? must he not have understeered? must we not have understeered? must you not have understeered? must they not have understeered?
Perfect en V-ing
must I not have been understeering? must you not have been understeering? must he not have been understeering? must we not have been understeering? must you not have been understeering? must they not have been understeering?