自信大方的留学生在说话时，可以遵循以下建议：

开场问候

使用礼貌的语言向听众问好，例如：“Hello everyone!”或“Hi, my name is [Your Name]. It's nice to meet you.”

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'm [Your Name], a student from [Your Country]. I'm majoring in [Your Major] at [Your University].”

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'm here because I'm really interested in [Specific Field of Study] and I hope to gain valuable experience and knowledge that will benefit my future career.”

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：“Living in [Country/City] has been an amazing experience. I've faced some challenges, but it has also been a time of great personal growth.”

鼓励和建议

鼓励新留学生适应新环境，努力学习，多交流。给出提高语言能力和专业技能的建议。例如：“I'd like to encourage all the new students to be open to new experiences and to take advantage of the opportunities to improve their language skills and professional knowledge.”

自信表达

在交流中保持自信，即使遇到语言障碍或文化差异，也可以坦诚地表达自己。例如：“I know my English might not be perfect, but I'm here to learn and improve. I'm sure we can all help each other grow.”

积极参与

在课堂讨论和小组活动中，积极参与并表达自己的观点。例如：“I have a few thoughts on [Topic], and I'd love to hear your opinions as well.”

通过以上建议，留学生可以更加自信大方地进行交流，展现出自己的风采和魅力。