**Here are 10 examples of using the word «formal» in English:**
1. We need to prepare a formal invitation for the event.
2. She attended a formal dinner at the embassy last night.
3. He prefers to wear formal attire to work every day.
4. The company requires a formal business suit for interviews.
5. They held a formal meeting to discuss the project.
6. She gave a formal speech at the opening ceremony.
7. The organization follows strict formal procedures for membership applications.
8. He received a formal warning from his boss for being late.
9. They attended a formal dance recital at the school.
10. The teacher explained the formal rules of the exam to the students.