I must complain you must complain he must complain we must complain you must complain they must complain
Forma con V-ing
I must be complaining you must be complaining he must be complaining we must be complaining you must be complaining they must be complaining
Perfecto
I must have complained you must have complained he must have complained we must have complained you must have complained they must have complained
Perfecto con V-ing
I must have been complaining you must have been complaining he must have been complaining we must have been complaining you must have been complaining they must have been complaining
Negación
Forma simple
I must not complain you must not complain he must not complain we must not complain you must not complain they must not complain
Forma con V-ing
I must not be complaining you must not be complaining he must not be complaining we must not be complaining you must not be complaining they must not be complaining
Perfecto
I must not have complained you must not have complained he must not have complained we must not have complained you must not have complained they must not have complained
Perfecto con V-ing
I must not have been complaining you must not have been complaining he must not have been complaining we must not have been complaining you must not have been complaining they must not have been complaining
Forma interrogativa
Forma simple
must I complain? must you complain? must he complain? must we complain? must you complain? must they complain?
Forma con V-ing
must I be complaining? must you be complaining? must he be complaining? must we be complaining? must you be complaining? must they be complaining?
Perfecto
must I have complained? must you have complained? must he have complained? must we have complained? must you have complained? must they have complained?
Perfecto con V-ing
must I have been complaining? must you have been complaining? must he have been complaining? must we have been complaining? must you have been complaining? must they have been complaining?
Forma interro-negativa
Forma simple
must I not complain? must you not complain? must he not complain? must we not complain? must you not complain? must they not complain?
Forma con V-ing
must I not be complaining? must you not be complaining? must he not be complaining? must we not be complaining? must you not be complaining? must they not be complaining?
Perfecto
must I not have complained? must you not have complained? must he not have complained? must we not have complained? must you not have complained? must they not have complained?
Perfecto con V-ing
must I not have been complaining? must you not have been complaining? must he not have been complaining? must we not have been complaining? must you not have been complaining? must they not have been complaining?