2. Then, introduce the background and purpose of the activity. "Our school is about to celebrate its anniversary. On this special day, we want to invite all parents to the scene to celebrate with us. This is a good opportunity for you to know more about the development of our school. "

3. Then, explain the time, place and content of the activity. "This celebration will be held in the school auditorium on X, and we will prepare colorful programs and games, as well as exquisite gifts and prizes for parents. We believe that every parent will have a pleasant and unforgettable time. "

4. Finally, express sincere invitation and ask if the other party is interested in participating. "Because you are the parents of our students, we are very much looking forward to your arrival. Do you have time to attend this activity? We welcome you very much. "