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