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