I must beg you must beg he must beg we must beg you must beg they must beg
Forma con V-ing
I must be begging you must be begging he must be begging we must be begging you must be begging they must be begging
Perfecto
I must have begged you must have begged he must have begged we must have begged you must have begged they must have begged
Perfecto con V-ing
I must have been begging you must have been begging he must have been begging we must have been begging you must have been begging they must have been begging
Negación
Forma simple
I mustn't beg you mustn't beg he mustn't beg we mustn't beg you mustn't beg they mustn't beg
Forma con V-ing
I mustn't be begging you mustn't be begging he mustn't be begging we mustn't be begging you mustn't be begging they mustn't be begging
Perfecto
I mustn't have begged you mustn't have begged he mustn't have begged we mustn't have begged you mustn't have begged they mustn't have begged
Perfecto con V-ing
I mustn't have been begging you mustn't have been begging he mustn't have been begging we mustn't have been begging you mustn't have been begging they mustn't have been begging
Forma interrogativa
Forma simple
must I beg? must you beg? must he beg? must we beg? must you beg? must they beg?
Forma con V-ing
must I be begging? must you be begging? must he be begging? must we be begging? must you be begging? must they be begging?
Perfecto
must I have begged? must you have begged? must he have begged? must we have begged? must you have begged? must they have begged?
Perfecto con V-ing
must I have been begging? must you have been begging? must he have been begging? must we have been begging? must you have been begging? must they have been begging?
Forma interro-negativa
Forma simple
mustn't I beg? mustn't you beg? mustn't he beg? mustn't we beg? mustn't you beg? mustn't they beg?
Forma con V-ing
mustn't I be begging? mustn't you be begging? mustn't he be begging? mustn't we be begging? mustn't you be begging? mustn't they be begging?
Perfecto
mustn't I have begged? mustn't you have begged? mustn't he have begged? mustn't we have begged? mustn't you have begged? mustn't they have begged?
Perfecto con V-ing
mustn't I have been begging? mustn't you have been begging? mustn't he have been begging? mustn't we have been begging? mustn't you have been begging? mustn't they have been begging?