留学生答辩口语的表达可以遵循以下结构和要点：

开场问候

使用礼貌的语言向听众问好，例如：“Good afternoon, professors and teachers, ladies and gentlemen, thank you for attending the oral defense.”

自我介绍

简要介绍自己的背景，包括国籍、学校、专业等，例如：“I am XX. I come from XX University. I am studying XX major.”

感谢致辞

对主办方、教师、同学表示感谢，例如：“Thank you for having me.”

表达学习目的和期待

说明选择留学的原因，包括学术兴趣、文化交流、职业发展等，例如：“I chose to study abroad for academic interests and cultural exchanges.”

分享个人经历或感受

可以分享留学生活中的体验、挑战和收获，例如：“During my studies abroad, I have faced many challenges and gained valuable experiences.”

鼓励和建议

鼓励新留学生适应新环境，努力学习，多交流，例如：“I would like to encourage new students to adapt to the new environment, study hard, and communicate with others.”

回答问题时

听清楚问题：如果没听清问题，可以要求老师重复，例如：“Pardon me, could you please repeat the question？”

态度好：回答时态度要友好，切题，不要保持沉默，不会时可以表示抱歉，例如：“I'm sorry, I don't understand the question. Could you please rephrase it？”

简洁明了：尽量简洁明了地回答问题，避免冗长和离题

结束语

在答辩结束时，可以简要总结自己的发言，并感谢听众，例如：“In conclusion, my research focuses on XX. Thank you for your attention.”

“Good afternoon, professors and teachers, ladies and gentlemen, thank you for attending my oral defense. My name is XX, and I am from XX University. I am studying XX major. Today, I am here to present my thesis on XX.

I chose to study abroad for academic interests and cultural exchanges. During my studies, I have faced many challenges and gained valuable experiences. My research focuses on XX, and I have conducted extensive research and analysis to support my findings.

I would like to encourage new students to adapt to the new environment, study hard, and communicate with others. Thank you for your attention, and I look forward to your questions and feedback.”

希望这些建议能帮助留学生在答辩中更好地表达自己。