English verb conjugation
MUST ANNOUNCE

Regular verb: announce - announced - announced

Affirmation

Simple form	V-ing form
I must announce you must announce he must announce we must announce you must announce they must announce	I must be announcing you must be announcing he must be announcing we must be announcing you must be announcing they must be announcing
Perfect	V-ing perfect
I must have announced you must have announced he must have announced we must have announced you must have announced they must have announced	I must have been announcing you must have been announcing he must have been announcing we must have been announcing you must have been announcing they must have been announcing

Negation

Simple form	V-ing form
I must not announce you must not announce he must not announce we must not announce you must not announce they must not announce	I must not be announcing you must not be announcing he must not be announcing we must not be announcing you must not be announcing they must not be announcing
Perfect	V-ing perfect
I must not have announced you must not have announced he must not have announced we must not have announced you must not have announced they must not have announced	I must not have been announcing you must not have been announcing he must not have been announcing we must not have been announcing you must not have been announcing they must not have been announcing

Interrogative form

Simple form	V-ing form
must I announce? must you announce? must he announce? must we announce? must you announce? must they announce?	must I be announcing? must you be announcing? must he be announcing? must we be announcing? must you be announcing? must they be announcing?
Perfect	V-ing perfect
must I have announced? must you have announced? must he have announced? must we have announced? must you have announced? must they have announced?	must I have been announcing? must you have been announcing? must he have been announcing? must we have been announcing? must you have been announcing? must they have been announcing?

Interro-negative form

Simple form	V-ing form
must I not announce? must you not announce? must he not announce? must we not announce? must you not announce? must they not announce?	must I not be announcing? must you not be announcing? must he not be announcing? must we not be announcing? must you not be announcing? must they not be announcing?
Perfect	V-ing perfect
must I not have announced? must you not have announced? must he not have announced? must we not have announced? must you not have announced? must they not have announced?	must I not have been announcing? must you not have been announcing? must he not have been announcing? must we not have been announcing? must you not have been announcing? must they not have been announcing?