I must wither you must wither he must wither we must wither you must wither they must wither
Forma con V-ing
I must be withering you must be withering he must be withering we must be withering you must be withering they must be withering
Perfecto
I must have withered you must have withered he must have withered we must have withered you must have withered they must have withered
Perfecto con V-ing
I must have been withering you must have been withering he must have been withering we must have been withering you must have been withering they must have been withering
Negación
Forma simple
I mustn't wither you mustn't wither he mustn't wither we mustn't wither you mustn't wither they mustn't wither
Forma con V-ing
I mustn't be withering you mustn't be withering he mustn't be withering we mustn't be withering you mustn't be withering they mustn't be withering
Perfecto
I mustn't have withered you mustn't have withered he mustn't have withered we mustn't have withered you mustn't have withered they mustn't have withered
Perfecto con V-ing
I mustn't have been withering you mustn't have been withering he mustn't have been withering we mustn't have been withering you mustn't have been withering they mustn't have been withering
Forma interrogativa
Forma simple
must I wither? must you wither? must he wither? must we wither? must you wither? must they wither?
Forma con V-ing
must I be withering? must you be withering? must he be withering? must we be withering? must you be withering? must they be withering?
Perfecto
must I have withered? must you have withered? must he have withered? must we have withered? must you have withered? must they have withered?
Perfecto con V-ing
must I have been withering? must you have been withering? must he have been withering? must we have been withering? must you have been withering? must they have been withering?
Forma interro-negativa
Forma simple
mustn't I wither? mustn't you wither? mustn't he wither? mustn't we wither? mustn't you wither? mustn't they wither?
Forma con V-ing
mustn't I be withering? mustn't you be withering? mustn't he be withering? mustn't we be withering? mustn't you be withering? mustn't they be withering?
Perfecto
mustn't I have withered? mustn't you have withered? mustn't he have withered? mustn't we have withered? mustn't you have withered? mustn't they have withered?
Perfecto con V-ing
mustn't I have been withering? mustn't you have been withering? mustn't he have been withering? mustn't we have been withering? mustn't you have been withering? mustn't they have been withering?