I'd be announcing you'd be announcing he'd be announcing we'd be announcing you'd be announcing they'd be announcing
Perfect
I should've announced you should've announced he should've announced we should've announced you should've announced they should've announced
V-ing perfect
I should've been announcing you should've been announcing he should've been announcing we should've been announcing you should've been announcing they should've been announcing
Negation
Simple form
I shouldn't announce you shouldn't announce he shouldn't announce we shouldn't announce you shouldn't announce they shouldn't announce
V-ing form
I shouldn't be announcing you shouldn't be announcing he shouldn't be announcing we shouldn't be announcing you shouldn't be announcing they shouldn't be announcing
Perfect
I shouldn't have announced you shouldn't have announced he shouldn't have announced we shouldn't have announced you shouldn't have announced they shouldn't have announced
V-ing perfect
I shouldn't have been announcing you shouldn't have been announcing he shouldn't have been announcing we shouldn't have been announcing you shouldn't have been announcing they shouldn't have been announcing
Interrogative form
Simple form
should I announce? should you announce? should he announce? should we announce? should you announce? should they announce?
V-ing form
should I be announcing? should you be announcing? should he be announcing? should we be announcing? should you be announcing? should they be announcing?
Perfect
should I have announced? should you have announced? should he have announced? should we have announced? should you have announced? should they have announced?
V-ing perfect
should I have been announcing? should you have been announcing? should he have been announcing? should we have been announcing? should you have been announcing? should they have been announcing?
Interro-negative form
Simple form
shouldn't I announce? shouldn't you announce? shouldn't he announce? shouldn't we announce? shouldn't you announce? shouldn't they announce?
V-ing form
shouldn't I be announcing? shouldn't you be announcing? shouldn't he be announcing? shouldn't we be announcing? shouldn't you be announcing? shouldn't they be announcing?
Perfect
shouldn't I have announced? shouldn't you have announced? shouldn't he have announced? shouldn't we have announced? shouldn't you have announced? shouldn't they have announced?
V-ing perfect
shouldn't I have been announcing? shouldn't you have been announcing? shouldn't he have been announcing? shouldn't we have been announcing? shouldn't you have been announcing? shouldn't they have been announcing?