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