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