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