1. Always show courtesy to others by holding the door open for them.
请始终对他人表示礼貌，为他们开门。

2. It is common courtesy to say "thank you" when someone does something nice for you.
当有人为你做了好事时，说“谢谢”是常规礼貌。

3. The hotel staff greeted us with great courtesy and made us feel welcome.
酒店员工以极大的礼貌迎接我们，让我们感到受欢迎。

4. As a courtesy, please let me know if you will be attending the meeting.
为了礼貌，请告诉我您是否会参加会议。

5. It is a common courtesy to RSVP to invitations in a timely manner.
及时回复邀请是一种常规礼貌。

6. The company sent a courtesy car to pick up the important client from the airport.
公司派遣了一辆礼宾车去机场接这位重要客户。