Announcement

commercials -> on radio, tv, newpaper, etc

non-commercials -> public services announcement, public event announcement, school / educational announcement, business announcement

personal -> wedding announcement, newly-born announcement, death announcement (obituary)

to sell something

to campaign against / for something

to invite people to events

to ask people to do things

to publicize a formal personal event

clarity in each sentence

correct pronounciation of each word

intonation of each sentence

pause at commas and paragraphs

voice volume

be direct an concise in your announcment -> reader will be able to understand the information quickly and can refer back to it easily

write a short, friendly announcement that's to the point when you're sharing positive news -> it can build on positive feelings like confidence and helpfulness

recognize what others have achieved in your announcement and motivate your reader to reach similar goals

present your information in a plain and complete way so that the reader will understand you the firs time

if the news you are announcing is bad, write it in a direct statement