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