很多学生的作文，第一眼看上去字数够，但读起来像骨架——有结构没内容。“I think it is good. It is important.” 一句话就完了。段落展开不开，是大多数写作者的共同瓶颈。不会展开，不是词汇量的问题，是不知道”展开”有哪些具体方法。
📊 厦门灯塔威廉老师批改数据： 超过75%的扣分集中在句子结构单一，而非词汇量不足。学生写作中最常见的问题是：有观点不会展开，一个观点一句话就结束了。
方法一：举例法（Example）
观点太抽象？给一个具体的例子。例子的力量远超抽象论述。
例句： Many people benefit from learning a second language. 展开： For instance, my cousin Li Ming, who studied English for three years, was able to communicate with international clients at his workplace, which led to a promotion within six months.
方法二：因果法（Cause-Effect）
不要只说”什么发生了”，要说”为什么”和”然后呢”。
例句： Regular exercise improves students’ academic performance. 展开： This is because physical activity increases blood flow to the brain, enhancing concentration and memory. As a result, students who exercise regularly tend to score higher on exams.
方法三：对比法（Comparison-Contrast）
通过对比让读者更清楚你的观点。
例句： Traditional classrooms and online learning have different strengths. 展开： While traditional classrooms offer face-to-face interaction and immediate feedback, online learning provides flexibility and access to a wider range of resources. In contrast to the fixed schedule of physical classes, online courses allow students to learn at their own pace.
方法四：分类法（Classification）
把一个大概念拆成几个小类，逐个说明。
例句： Environmental pollution takes various forms. 展开： Broadly speaking, pollution can be divided into three main types: air pollution from industrial emissions, water pollution from chemical waste, and soil pollution from improper disposal of garbage. Each type poses unique threats to human health.
方法五：定义法（Definition）
在讨论一个关键概念时，先给出清晰的定义，避免理解偏差。
例句： Resilience is essential for success. 展开： By resilience, I mean the ability to recover quickly from setbacks and adapt to challenging circumstances. For example, a resilient student does not give up after failing an exam but instead analyzes their mistakes and improves.
方法六：细节法（Details）
用具体的感官细节或数据让段落更生动。
例句： The market was crowded. 展开： The market was filled with the aroma of freshly baked bread and sizzling street food. Vendors shouted their prices over the noise of bargaining customers. Bright red chili peppers and green vegetables were piled high on wooden stalls.
对比示例：单一 vs 展开
| 单一写法 | 展开后写法（因果+举例） |
|---|---|
| Reading is good for students. | Reading broadens students’ perspectives by exposing them to different cultures and ideas. For instance, a student who reads novels about life in Africa can gain insights into a completely different world, developing empathy and global awareness. |
练习建议： 写每一段时，问自己三个问题：我举例子了吗？我解释原因了吗？我能不能加一个对比？答完这三个问题，段落自然就丰满了。
📌 相关推荐： 如果你对句子级别的扩写技巧感兴趣，推荐阅读 《句子扩写五大手法——从简单句到高级句的蜕变》 —— 段落展开(段落级)与句子扩写(句子级)互为技术补充。
厦门灯塔 · 专业英语作文逐句批改 | 微信 linstudio799 专注中高考/雅思写作 · 累计批改300+篇 · 逐句精批 + 逻辑重构 + 母语级升级