一、日常交流类

1. 问候与寒暄

Hello/Hi/Good morning/afternoon/Good evening

How's your day going？/How's it going？

Nice to meet you!

2. 自我介绍

This is [name], from [place].

May I introduce you to my friend [name]？

二、请求与回应类

1. 常见请求

Could you help me, please？

Can I borrow a pen？

Would you mind opening the window？

2. 同意与拒绝

I agree/That's right/Absolutely

I'm afraid I have to disagree

No problem/Of course

三、表达情感类

1. 感谢与道歉

Thank you very much!

I'm sorry for [action]

You're welcome/No problem

2. 鼓励与安慰

You can do it!

Don't worry, I'm here to help

Stay positive!

四、应急场景类

1. 突发情况

Watch out!

Help!

Stay calm!

2. 时间与安排

Can I reschedule？

I'll be back later

Let's meet at 5 PM

这些句子覆盖了日常交际中的高频场景，通过灵活运用可以提升表达的流利度。建议结合具体语境选择合适表达，并注意语音语调的自然过渡。