答案：（范文）
A Growing Me
Dear teachers and classmates,
Good morning! Today, I want to share my true self with you. As I grow from a primary school student to a middle school student, my understanding of myself has changed a lot.
First, let me talk about my looks. I'm of medium height with short black hair and a pair of bright eyes. My friends often say I have a warm smile that can make people feel happy. When it comes to personalities, I'm outgoing and helpful. I always try my best to help my classmates when they are in trouble. However, I used to be shy and afraid to speak in public. Now, I can stand here and give a speech confidently, which is a big change for me.
In terms of abilities, I've learned to play the piano for three years. At first, it was very difficult, but I kept practicing. Last month, I won the first prize in the school piano competition. I was so excited because it was the first time I had won such a prize. I like my persistence very much. No matter what difficulties I meet, I never give up easily. As for my likes and dislikes, I like reading books and playing basketball. Reading makes me knowledgeable, and playing basketball helps me stay healthy. I dislike lying because honesty is very important to me.
One reason for my change is the encouragement from my teachers and parents. They always believe in me and support me to try new things. I have learned to accept my shortcomings and work hard to improve myself.
In conclusion, I have learned that I am what I am. I am a girl/boy who is outgoing, helpful, and persistent. I have discovered that growing up means not only getting older but also becoming better. Understanding myself means knowing my strengths and weaknesses and trying to be the best version of myself.
Thank you for listening!＜/解析＞这篇演讲稿按照题目要求，包含了引言、主体和结论三部分。引言部分说明了演讲的目的；主体部分描述了外貌、性格、能力、喜好和厌恶，并解释了变化的原因；结论部分总结了对自己的认识。内容完整，符合提纲要求，语言流畅自然，使用了所学的语法和词汇。