关于友谊结束的原因，英语作文可以从多个角度进行分析和表达。以下是常见的原因及写作建议：

一、常见原因分析

缺乏沟通

无法有效表达想法或倾听对方，导致误解和矛盾积累。

误解与冲突

信息误传或价值观差异引发争执，若未及时化解，可能破坏关系。

个人成长变化

人生阶段转变（如搬家、职业发展）导致兴趣、生活方式差异。

外部压力

学业、工作等现实压力使双方无法维持原有关系。

二、写作结构建议

引言

简述友谊的重要性，引出结束的原因。

主体段落

- 每段分析一个主要原因，结合具体例子说明。

- 使用转折词（如however, consequently）连接段落。

结尾

总结经验教训，强调珍惜眼前人。

三、写作示例

开头

"Friendships are the threads that weave the fabric of our lives, but sometimes they unravel due to unforeseen circumstances."

中间段落

"One of the most prevalent reasons friendships fade is the lack of communication. When we stop sharing our thoughts and feelings, misunderstandings take root and grow into chasms. For instance, my friend Sarah and I stopped communicating after a disagreement about plans, and soon our friendship lost its mutual respect."

结尾

"True friendship is a two-way street, requiring effort and understanding from both parties. It's not enough to show affection； we must also be willing to listen and adapt. I've learned to cherish the friendships I have by being more open and forgiving."

通过以上分析和建议，可以系统地探讨友谊结束的多重原因，并结合自身经历增强文章的感染力。