must announce
Regular verb: announce - announced- announced

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