在进行商务英语口语练习时，掌握一些核心句式能够帮助你更自信地应对各种商务场合。以下是一些建议的核心句式：

1. 提出意见：
- "In my opinion, we should..."
- "From my perspective, it seems that..."

2. 同意与支持：
- "I couldn't agree more."
- "That's a great idea. I'm on board."

3. 提出疑问：
- "Could you please clarify that?"
- "I have a question about..."

4. 拒绝与反对：
- "I'm afraid I have to disagree."
- "I don't think that's a good idea."

5. 建议与提议：
- "I suggest we..."
- "How about we..."

6. 表达担忧：
- "I'm a bit concerned about..."
- "There's a potential issue with..."

7. 安排与确认：
- "Let's schedule a meeting for next week."
- "Can we confirm the details for the project?"

8. 表达感谢：
- "Thank you for your hard work."
- "I appreciate your support."

9. 表达遗憾与道歉：
- "I apologize for any inconvenience caused."
- "I'm sorry to hear that."

10. 结束对话：
- "It's been a pleasure discussing this with you."
- "Thank you for your time. Let's keep in touch."

通过学习和运用这些核心句式，你将能更自信地应对商务场合，提高口语表达能力。同时，多与母语为英语的人士进行练习，观看商务英语相关的视频和阅读材料，也能帮助你更好地掌握这些句式。

希望这些句式能对你有所帮助，祝你学习顺利！