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