Well, the next materials is announcement. You must know what is announcement. And you must ever read some announcement. I just want to retelling you about Announcement. For you who not yet understand about it, wish you can understand with my definition about announcement.Attention please,
All the teacher will conduct a meeting tomorrow.
All of you can go home early, after the first break.
Please be informed.

The text above is an announcement. Announcement is something said, written, or printed to make known what has happened or (more often) what will happen.
It is used to give information about something in a public place.