【分析】
首先，我们要明确题目要求：以“My good friend”为题，讲述好朋友帮助自己的经历，且不少于10句话。解题思路可分为三步：第一步，开篇介绍好朋友的基本信息，比如名字、性格特点，让读者对人物有初步认知；第二步，详细叙述被帮助的经历，要包含事件的起因（如陷入具体困境）、经过（朋友主动帮忙的具体行为）、结果（问题解决后的感受）；第三步，结尾抒发对这份友谊的感悟，点明朋友的可贵，同时确保整体句子数量达标。思考时要选取贴近校园生活的真实小事，让内容更自然，语言尽量用学过的简单句型，避免复杂表达。
【解析】
1. 开篇引入：先用简单句子点明自己有好朋友，介绍其名字和性格，如“I have a good friend. His name is Tom. He is kind and helpful.”，快速建立人物形象。
2. 事件起因：设置具体困境，比如忘记带英语书，表达自己的焦急心情，如“One day, I forgot to bring my English book to school. I was very worried because we had an English class.”，为下文朋友的帮助做铺垫。
3. 帮助过程：描写朋友发现自己的情绪后主动提供帮助的细节，包括语言和行动，如“Tom saw that I was upset. He came to me and said, 'Don't worry. We can share my book.'”，接着补充课堂上的互动，如“During the class, we read the book together. He also helped me understand some difficult words.”，让事件更具体。
4. 结尾升华：写自己的感谢和朋友的回应，最后总结对友谊的看法，如“After class, I thanked him. He said, 'We are good friends. That's what friends do.' I think Tom is a true friend. He always helps me when I need help. I am lucky to have him as my friend.”，既满足句子数量要求，又深化主题。
【答案】
My good friend
I have a good friend. His name is Tom. He is kind and helpful. One day, I forgot to bring my English book to school. I was very worried because we had an English class. Tom saw that I was upset. He came to me and said, "Don't worry. We can share my book." I was so happy. During the class, we read the book together. He also helped me understand some difficult words. After class, I thanked him. He said, "We are good friends. That's what friends do." I think Tom is a true friend. He always helps me when I need help. I am lucky to have him as my friend.
【知识点】
1. 记叙文写作结构
2. 日常交际用语
3. 人物与事件叙述
【点评】
这篇范文紧扣题目要求，结构清晰完整，从介绍朋友到讲述帮助经历再到抒发感悟，层层递进。选取了贴近校园生活的忘带课本事件，内容真实可信，语言简洁易懂，符合学生的英语表达水平，同时满足了不少于10句话的要求，是一篇优秀的小学英语写作范文，适合学生参考模仿。
【难度系数】
0.6