This document provides expressions and examples for thanking and apologizing in English. It includes: - Common phrases used for thanking such as "Thank you", "Thanks a lot", and responses like "You're welcome". - Examples of thanking someone for a gift, invitation, and meal. - Ways to apologize such as "I'm sorry", "Please forgive me", and responses like "That's alright". - Practice dialogs for returning an item, receiving a gift, being treated to dinner, and getting a ride. - Exercises to practice thanking and apologizing in different situations.