I must unload you must unload he must unload we must unload you must unload they must unload
Forma con V-ing
I must be unloading you must be unloading he must be unloading we must be unloading you must be unloading they must be unloading
Perfecto
I must have unloaded you must have unloaded he must have unloaded we must have unloaded you must have unloaded they must have unloaded
Perfecto con V-ing
I must have been unloading you must have been unloading he must have been unloading we must have been unloading you must have been unloading they must have been unloading
Negación
Forma simple
I must not unload you must not unload he must not unload we must not unload you must not unload they must not unload
Forma con V-ing
I must not be unloading you must not be unloading he must not be unloading we must not be unloading you must not be unloading they must not be unloading
Perfecto
I must not have unloaded you must not have unloaded he must not have unloaded we must not have unloaded you must not have unloaded they must not have unloaded
Perfecto con V-ing
I must not have been unloading you must not have been unloading he must not have been unloading we must not have been unloading you must not have been unloading they must not have been unloading
Forma interrogativa
Forma simple
must I unload? must you unload? must he unload? must we unload? must you unload? must they unload?
Forma con V-ing
must I be unloading? must you be unloading? must he be unloading? must we be unloading? must you be unloading? must they be unloading?
Perfecto
must I have unloaded? must you have unloaded? must he have unloaded? must we have unloaded? must you have unloaded? must they have unloaded?
Perfecto con V-ing
must I have been unloading? must you have been unloading? must he have been unloading? must we have been unloading? must you have been unloading? must they have been unloading?
Forma interro-negativa
Forma simple
must I not unload? must you not unload? must he not unload? must we not unload? must you not unload? must they not unload?
Forma con V-ing
must I not be unloading? must you not be unloading? must he not be unloading? must we not be unloading? must you not be unloading? must they not be unloading?
Perfecto
must I not have unloaded? must you not have unloaded? must he not have unloaded? must we not have unloaded? must you not have unloaded? must they not have unloaded?
Perfecto con V-ing
must I not have been unloading? must you not have been unloading? must he not have been unloading? must we not have been unloading? must you not have been unloading? must they not have been unloading?