The document discusses various courteous expressions used in English such as "Excuse me" which is used to get past someone or get their attention, "Sorry" for apologizing for small things, "I beg your pardon" as a more formal way to say sorry, and "Pardon me" when you didn't hear something. It also discusses using "I'm afraid" when apologizing for something unwanted, "I wonder if" when asking for favors hesitantly, "Please" when requesting something, and "Thank you"/"Thanks" when receiving something.