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