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 mustn't announce
you mustn't announce
she mustn't announce
we mustn't announce
you mustn't announce
they mustn't announce 	I mustn't be announcing
you mustn't be announcing
she mustn't be announcing
we mustn't be announcing
you mustn't be announcing
they mustn't be announcing	I mustn't have announced
you mustn't have announced
she mustn't have announced
we mustn't have announced
you mustn't have announced
they mustn't have announced	I mustn't have been announcing
you mustn't have been announcing
she mustn't have been announcing
we mustn't have been announcing
you mustn't have been announcing
they mustn't 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 	
mustn't I announce?
mustn't you announce?
mustn't she announce?
mustn't we announce?
mustn't you announce?
mustn't they announce? 	mustn't I be announcing?
mustn't you be announcing?
mustn't she be announcing?
mustn't we be announcing?
mustn't you be announcing?
mustn't they be announcing? 	mustn't I have announced?
mustn't you have announced?
mustn't she have announced?
mustn't we have announced?
mustn't you have announced?
mustn't they have announced? 	mustn't I have been announcing?
mustn't you have been announcing?
mustn't she have been announcing?
mustn't we have been announcing?
mustn't you have been announcing?
mustn't they have been announcing?