一、  礼仪用语、介绍及询问等1. 早上好！Good morning. 2. 下午好！Good afternoon.3. 晚上好！Good evening.4. 晚安！Good night.5. 请坐Sit down,please.6. 谢谢Thank you.7. 别客气You are welcome.8. 明天见See you tomorrow.9. 下个航次见See you ne