一、日常问候与寒暄

1. 基础问候

Good morning/afternoon/evening!

Hi/Hello!

How do you do!

2. 常见寒暄

Long time no see!

How are you？

I hope you'll enjoy your stay!

二、社交场合用语

1. 欢迎与告别

Welcome to [place]!

Goodbye!

Good night!

2. 征询与回应

Can I help you？

What can I do for you？

I'm sorry to have kept you waiting.

三、餐饮服务用语

1. 餐前

May I take your order？

Can I have a day off？

2. 餐中

Thank you for the meal.

Would you mind opening the door？

四、职场礼仪用语

1. 商务场合

Excuse me, may I speak with [name]？

Thank you for your help.

2. 求助与感谢

Could you give me a favor？

My pleasure.

五、特殊场景用语

1. 拒绝与歉意

Absolutely impossible!

Sorry for the inconvenience.

2. 祝贺与回应

Congratulations!

The same to you.

这些礼貌句子覆盖了日常交流、商务场合及特殊场景，通过规范用语展现尊重与专业素养。建议结合具体语境灵活运用，注意语气和肢体语言的配合，以提升沟通效果。