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