I must barn you must barn he must barn we must barn you must barn they must barn
Forma com V-ing
I must be barning you must be barning he must be barning we must be barning you must be barning they must be barning
Perfeito
I must have barned you must have barned he must have barned we must have barned you must have barned they must have barned
Perfeito com V-ing
I must have been barning you must have been barning he must have been barning we must have been barning you must have been barning they must have been barning
Negação
Forma simple
I must not barn you must not barn he must not barn we must not barn you must not barn they must not barn
Forma com V-ing
I must not be barning you must not be barning he must not be barning we must not be barning you must not be barning they must not be barning
Perfeito
I must not have barned you must not have barned he must not have barned we must not have barned you must not have barned they must not have barned
Perfeito com V-ing
I must not have been barning you must not have been barning he must not have been barning we must not have been barning you must not have been barning they must not have been barning
Forma interrogativa
Forma simple
must I barn? must you barn? must he barn? must we barn? must you barn? must they barn?
Forma com V-ing
must I be barning? must you be barning? must he be barning? must we be barning? must you be barning? must they be barning?
Perfeito
must I have barned? must you have barned? must he have barned? must we have barned? must you have barned? must they have barned?
Perfeito com V-ing
must I have been barning? must you have been barning? must he have been barning? must we have been barning? must you have been barning? must they have been barning?
Forma interro-Negação
Forma simple
must I not barn? must you not barn? must he not barn? must we not barn? must you not barn? must they not barn?
Forma com V-ing
must I not be barning? must you not be barning? must he not be barning? must we not be barning? must you not be barning? must they not be barning?
Perfeito
must I not have barned? must you not have barned? must he not have barned? must we not have barned? must you not have barned? must they not have barned?
Perfeito com V-ing
must I not have been barning? must you not have been barning? must he not have been barning? must we not have been barning? must you not have been barning? must they not have been barning?