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