I must smooth you must smooth she must smooth we must smooth you must smooth they must smooth
Forma con V-ing
I must be smoothing you must be smoothing she must be smoothing we must be smoothing you must be smoothing they must be smoothing
Perfecto
I must have smoothed you must have smoothed she must have smoothed we must have smoothed you must have smoothed they must have smoothed
Perfecto con V-ing
I must have been smoothing you must have been smoothing she must have been smoothing we must have been smoothing you must have been smoothing they must have been smoothing
Negación
Forma simple
I mustn't smooth you mustn't smooth she mustn't smooth we mustn't smooth you mustn't smooth they mustn't smooth
Forma con V-ing
I mustn't be smoothing you mustn't be smoothing she mustn't be smoothing we mustn't be smoothing you mustn't be smoothing they mustn't be smoothing
Perfecto
I mustn't have smoothed you mustn't have smoothed she mustn't have smoothed we mustn't have smoothed you mustn't have smoothed they mustn't have smoothed
Perfecto con V-ing
I mustn't have been smoothing you mustn't have been smoothing she mustn't have been smoothing we mustn't have been smoothing you mustn't have been smoothing they mustn't have been smoothing
Forma interrogativa
Forma simple
must I smooth? must you smooth? must she smooth? must we smooth? must you smooth? must they smooth?
Forma con V-ing
must I be smoothing? must you be smoothing? must she be smoothing? must we be smoothing? must you be smoothing? must they be smoothing?
Perfecto
must I have smoothed? must you have smoothed? must she have smoothed? must we have smoothed? must you have smoothed? must they have smoothed?
Perfecto con V-ing
must I have been smoothing? must you have been smoothing? must she have been smoothing? must we have been smoothing? must you have been smoothing? must they have been smoothing?
Forma interro-negativa
Forma simple
mustn't I smooth? mustn't you smooth? mustn't she smooth? mustn't we smooth? mustn't you smooth? mustn't they smooth?
Forma con V-ing
mustn't I be smoothing? mustn't you be smoothing? mustn't she be smoothing? mustn't we be smoothing? mustn't you be smoothing? mustn't they be smoothing?
Perfecto
mustn't I have smoothed? mustn't you have smoothed? mustn't she have smoothed? mustn't we have smoothed? mustn't you have smoothed? mustn't they have smoothed?
Perfecto con V-ing
mustn't I have been smoothing? mustn't you have been smoothing? mustn't she have been smoothing? mustn't we have been smoothing? mustn't you have been smoothing? mustn't they have been smoothing?