用因果链表达，让段落解释更深入、更专业
📌 一、为什么 Cause–Effect 结构是写作中的“逻辑骨架”
在解释现象、说明观点或呈现趋势时，读者最需要看到的不是信息量，而是信息之间的逻辑关系。
Cause–Effect 结构恰好承担这一功能，它能帮助写作者：
- 明确“为什么”→解释现象
- 指出“产生什么影响”→展示结果
- 梳理“内部过程”→提升说服力
因此，无论是学术论文、观点文章还是课堂作文，都离不开这一结构。
📌 二、英语中常见的 Cause–Effect 表达类型
1️⃣ 原因前置型（强调背景）
- Because…
- Since…
- As…
示例：
- Since the material was highly abstract, many learners needed extra support.
2️⃣ 原因短语型（更正式）
- due to
- because of
- owing to
示例：
- Owing to the lack of review cycles, retention rates drop significantly.
3️⃣ 结果导向型（强调后果）
- therefore
- thus
- consequently
- as a result
示例：
- The tasks became increasingly demanding; as a result, the completion rate declined.
4️⃣ 动词结构：清晰描绘“导致”关系
- trigger（引发）
- cause（导致）
- generate（产生）
- contribute to（促成）
示例：
- Frequent exposure contributes to more natural language acquisition.
📌 三、Cause–Effect 结构中的逻辑质量如何提升？
✔ 技巧1：原因要有“解释力”，不能只写表面
❌ 表面化：
- Students failed because it was hard.
✔ 可解释：
- Students failed because the multi-step task exceeded their working memory capacity.
✔ 技巧2：结果要“可观测”，不能抽象
❌ 抽象：
- This brings problems.
✔ 清晰：
- This reduces accuracy and slows down decision-making.
✔ 技巧3：避免“伪因果”推断
若前后不具逻辑关联，则不能称为因果结构。
❌ 伪因果：
- The room was cold, so the students forgot grammar.
✔ 合理化：
- The room was cold, which distracted the students and reduced their concentration on grammar.
📌 四、进阶写法：将因果结构升级为“解释链”（Cause → Mechanism → Effect）
这是学术写作和高阶作文最常用的逻辑方式。
模板：
- Cause（原因）：产生现象的根本因素
- Mechanism（机制）：内在运作路径
- Effect（影响）：可观察的变化
示例：
- Limited interaction reduces cognitive engagement, which slows down the consolidation of new expressions.
此结构使段落读起来更“专业、有条理”。
📌 五、常见错误与升级版本
错误1：因果倒置
- ❌ The result improved because students practiced later.
- ✔ Because students practiced more regularly, the results improved.
错误2：使用过于普通的因果连接词
大量使用 because 容易使文章单调。
升级：as a result, consequently, hence, thus 等。
错误3：一次堆叠多个原因、多个结果
会削弱重点。
更佳方式：
- 分句
- 分段
- 明确主因、副因（mainly / additionally）
📌 六、示范段落
Because new assignments were introduced gradually, learners encountered manageable challenges at each stage. This progressive arrangement enhanced their confidence, and consequently, their overall performance improved across multiple tasks.
📌 七、练习任务（3题）
- 使用 consequently 写一句“原因 → 结果”句。
- 将句子 “The lesson was quick, so students didn’t understand well.” 改成正式因果表达。
- 写一个包含“原因→机制→影响”的三段式因果句。