理解每个单句仍可能读不懂段落，因为作者通过代词、替代、重复、同义改写和逻辑连接把信息串联。指代链一旦接错，整段论证会换主语。
this, it, they, such a result 到底指什么？先行词不总是最近名词，也可能是整个命题或推理动作。
this/that 可指名词、事件或前述整个命题。the intervention、the program、this policy。The survey omitted temporary workers. This exclusion may bias the estimate.
This exclusion 把前一句事件名词化并作为新句主语。
The model predicts a decline, but the data do not support it.
it 最自然指 decline 这一预测内容，不是 model 本身。
The city introduced a fee. The policy reduced traffic initially.
The policy 重新命名前句的 fee 制度，建立词汇衔接。
Some firms adopted the technology; others delayed doing so.
others 指其余 firms，doing so 替代 adopted the technology。
The interval is wide. This does not mean the estimate is useless.
This 指整个“区间宽”的事实，而非单个名词 interval。
The mechanism is plausible. Nevertheless, direct evidence remains limited.
Nevertheless 指示后句与前句形成让步转折：合理不等于已被直接证明。
Participants knew the study's purpose. Such awareness could alter their behavior.
Such awareness 概念化回指“知道研究目的”。
The first explanation assumes stable preferences. The second does not.
does not 恢复为 does not assume stable preferences，形成解释间对照。
The university offered students optional writing support. Uptake was highest among students who already had strong grades. This pattern complicates a simple comparison between users and nonusers, because the two groups differed before support began. Such preexisting differences can produce an apparent program effect even when the service itself has little impact. A credible evaluation must therefore address selection.
This pattern 回指高分学生更常使用；the two groups 将 users/nonusers 集合化；Such preexisting differences 再抽象前一句；therefore 给出方法要求。
训练语境：学术科研
The sample was small. This reduced precision. 中 This 指什么？
指“样本小”这一状态或事实，而不只是 sample 这个对象。正是小规模降低精度。
训练语境：学术科研
解释：The treatment group improved, whereas the control group did not.
did not 替代 improve；whereas 明示两组对比。它没有自动说明差异由 treatment 导致，因果仍需设计支持。
训练语境：学术科研
找先行内容：The coefficient changed sign. Such instability requires explanation.
Such instability 将系数变号解释为不稳定现象。作者不只是重复事实，而是给事实加上评价类别。
训练语境：学术科研
it 有何歧义：The model was compared with the benchmark after it was revised.
it 可指 model，也可指 benchmark；两者语法数和语义都匹配。应明确写 after the model was revised 或 after the benchmark was revised。
训练语境：学术科研
However 是否总是否定前句？
不是。它标记预期转折或限制，后句可保留前句事实，只改变其解释范围。例如结果显著，however 效应很小。
训练语境：学术科研
解释 the former：We distinguish prediction from explanation. The former can succeed without the latter.
the former 指先出现的 prediction，the latter 指 explanation。句子说预测可成功而解释不成功，不能颠倒。
训练语境：真实生活
分析：Maya lent Ana her car because she was late.
her 与 she 都可能在语法上指 Maya 或 Ana，常识不能保证唯一答案。应重写明确所有者和迟到者。
训练语境：真实生活
I missed the bus. That ruined my morning. 中 That 指什么？
指“错过公交”这一事件，不是 bus 这个物体。事件指代使整个命题进入下一句因果关系。
训练语境：真实生活
解释：Some rooms have balconies; others do not.
others 指其余 rooms，do not 恢复为 do not have balconies。省略依赖前句提供完整谓语。
训练语境：真实生活
The store closed early. As a result, we returned tomorrow. 有何问题？
As a result 建立因果合理，但 returned tomorrow 与过去叙事点冲突，应为 returned the next day 或把主句改为现在计划。衔接包括逻辑也包括时间参照。
Early experiments suggested that the intervention increased trust, but later replications complicated that conclusion. They found smaller effects in communities where local institutions were already viewed as legitimate. This pattern does not necessarily contradict the original finding; rather, it suggests that the intervention may matter most where baseline trust is low. Such a possibility shifts the question from whether the program works to for whom and under what conditions it works.
They 回指 later replications。This pattern 总结前面的结果，并给出重新解释。Such a possibility 回指这种条件性解释，推进研究问题。that conclusion 指“干预提高信任”的早期结论。They found... 中 They 不是 early experiments，而是 later replications。This pattern 指“基线合法性高的社区效果较小”这一整体模式。Such a possibility 指“干预在基线信任低处更重要”的可能性。高阶语境：学术科研
说明第二句 They 的先行词，并给出判断理由。
They 指 later replications。理由是第二句说“发现较小效果”，这通常是复制研究的结果；若指 early experiments，就会与第一句中 early experiments 已经 suggested 的内容混淆。
高阶语境：学术科研
This pattern 和 Such a possibility 分别压缩了前文哪一层信息？
This pattern 压缩的是“合法性已高的社区效果较小”这一经验模式；Such a possibility 压缩的是作者对该模式的解释，即干预可能主要在基线信任低时起作用。
高阶语境：真实生活
读句子：The new schedule helped beginners more than advanced students. This pattern suggests that the problem was not motivation but initial confusion. 解释 This pattern 指什么。
This pattern 指“新时间表对初学者比对高阶学生帮助更大”这一结果模式。它不是指 schedule 本身，而是指前一句呈现出的差异。
给段落中的每个代词画箭头，给同一对象的不同称呼标同色，再圈出连接词。若箭头无法唯一落点，就记录真实歧义，而不是强行猜测。