must announce
Regular verb: announce - announced- announced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?