I must don you must don he must don we must don you must don they must don
Forma con V-ing
I must be donning you must be donning he must be donning we must be donning you must be donning they must be donning
Perfecto
I must have donned you must have donned he must have donned we must have donned you must have donned they must have donned
Perfecto con V-ing
I must have been donning you must have been donning he must have been donning we must have been donning you must have been donning they must have been donning
Negación
Forma simple
I must not don you must not don he must not don we must not don you must not don they must not don
Forma con V-ing
I must not be donning you must not be donning he must not be donning we must not be donning you must not be donning they must not be donning
Perfecto
I must not have donned you must not have donned he must not have donned we must not have donned you must not have donned they must not have donned
Perfecto con V-ing
I must not have been donning you must not have been donning he must not have been donning we must not have been donning you must not have been donning they must not have been donning
Forma interrogativa
Forma simple
must I don? must you don? must he don? must we don? must you don? must they don?
Forma con V-ing
must I be donning? must you be donning? must he be donning? must we be donning? must you be donning? must they be donning?
Perfecto
must I have donned? must you have donned? must he have donned? must we have donned? must you have donned? must they have donned?
Perfecto con V-ing
must I have been donning? must you have been donning? must he have been donning? must we have been donning? must you have been donning? must they have been donning?
Forma interro-negativa
Forma simple
must I not don? must you not don? must he not don? must we not don? must you not don? must they not don?
Forma con V-ing
must I not be donning? must you not be donning? must he not be donning? must we not be donning? must you not be donning? must they not be donning?
Perfecto
must I not have donned? must you not have donned? must he not have donned? must we not have donned? must you not have donned? must they not have donned?
Perfecto con V-ing
must I not have been donning? must you not have been donning? must he not have been donning? must we not have been donning? must you not have been donning? must they not have been donning?