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