GRAMMAR OF POLITENESS

1. Asking permission

1.1. Can

1.2. Could

1.3. May

1.4. Do you mind

2. Asking questions

2.1. I wonder if

2.2. Would

2.3. Excuse me

2.4. Please

3. Expressing gratitude

3.1. Thank you

3.2. You are welcome

4. Apologizing

4.1. I am sorry