以下是一个初一学生英文自我介绍的示范：

Hello everyone！My name is [你的名字]，and I am a first-year middle school student. I am very happy to have the opportunity to introduce myself to you.

As for my academic achievements, I am an excellent student with good grades in all subjects. I am very interested in [你喜欢的科目], and I am looking forward to learning more about it.

In the future, I hope to become [你未来的梦想职业]. I believe that with hard work and dedication, I can achieve my goals and make a positive contribution to the world.