GRAMMAR OF POLITENESS
Borna Čobanovにより
1. Expressing gratitude
1.1. Thank you
1.2. You are welcome
2. Asking permission
2.1. Can
2.2. Could
2.3. May
2.4. Do you mind
3. Apologizing
3.1. I am sorry
4. Asking questions
4.1. I wonder if
4.2. Would
4.3. Excuse me
4.4. Please