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