一、结构
1. 开头：简单介绍自己的基本信息，包括姓名、年龄、学校、专业等。
2. 中间：详细介绍自己的兴趣爱好、学习经历、特长等，可以分段描述。
3. 结尾：自己的特点，表达对未来目标的追求和期望。
二、范文
Hello, everyone. My name is Li Hua. I am a 18-year-old student from Beijing. Currently, I am studying at the Department of Computer Science in Tsinghua University.
I am an outgoing and乐观开朗的 person who loves making friends. In my free time, I enjoy listening to music and singing. Music is a great way for me to relax and escape from the stress of daily life. I also like reading books, especially those about history and science fiction. Reading helps me to expand my horizons and gain a better understanding of the world.
When it comes to my academic interests, I am very passionate about computer science. I am currently taking courses related to artificial intelligence and machine learning. I am also actively involved in research projects and have made some interesting discoveries. My goal is to become a professional in this field and make a positive impact on society.
Besides my academic interests, I am also interested in social issues. I believe that everyone should have equal opportunities to succeed, and I am dedicated to helping those who are less fortunate. I have volunteered at a local charity organization and have helped to raise funds for underprivileged children. This experience has taught me the importance of giving back to the community and making a difference in the lives of others.
Looking ahead, I am excited about the opportunities that lie ahead. I am passionate about my field of study and am eager to make a positive impact on the world. I am also looking forward to the challenges that lie ahead and the opportunity to grow and learn from them. I believe that with hard work and dedication, I can achieve my goals and make a difference in the world.
Thank you for listening to my introduction. I look forward to any opportunity to show you what I can do.
以上是一个英语自我介绍作文的范文，您可以根据自己的实际情况进行修改和补充。在写作时，要注意语法和拼写的正确性，并尽可能使用简单易懂的语言来表达自己的意思。