组织因果类文章

理解了因果关系之后，下一个挑战是把你的想法有效地组织到纸面上。因果类文章可以用好几种不同的方式来组织，选择哪一种结构，取决于你的话题、你的论点句，以及你所分析的关系有多复杂。本节讲解因果类写作的主要组织模式，并说明每种模式在什么时候使用。

三种核心结构

组织一篇因果类文章，主要有三种方式：

1. 分块式结构（block structure）——在一部分中讨论所有原因，在另一部分中讨论所有结果。
2. 链式结构（chain structure）——一步一步地追溯因果顺序。
3. 逐点式结构（point-by-point structure）——把每个原因与相应的结果配成一对。

每种结构都有长处和局限。最好的选择取决于你话题的性质。

分块式结构

在分块式结构中，你把文章分成两个主要部分：一部分讨论原因，另一部分讨论结果。这是最直截了当的组织模式，当什么导致了某件事、它又带来了什么结果之间有清楚的分界时，效果很好。

怎样做

Introduction + Thesis

Block 1: Causes
  - Cause 1 (with explanation and evidence)
  - Cause 2 (with explanation and evidence)
  - Cause 3 (with explanation and evidence)

Block 2: Effects
  - Effect 1 (with explanation and evidence)
  - Effect 2 (with explanation and evidence)
  - Effect 3 (with explanation and evidence)

Conclusion

示例话题：地方报纸的衰落

第 1 块（原因）：

• The rise of free online news sources diverted readers.
• Advertising revenue shifted to social media platforms and search engines.
• Corporate consolidation led to cost-cutting that reduced quality.

第 2 块（结果）：

• Local government accountability decreased as investigative reporting disappeared.
• Communities lost a shared source of information, reducing civic engagement.
• Misinformation filled the gap left by professional local journalists.

分块式结构的长处

• 清楚、容易理解。
• 当原因和结果相对分开、各自独立时，效果很好。
• 能对每个原因和每个结果进行充分的论述。
• 适合写作任务要求你同时解释原因和结果的文章。

分块式结构的局限

• 如果你不明确地把具体的原因与具体的结果联系起来，就会显得脱节。
• 读者可能会搞不清哪个原因产生了哪个结果。
• 对于原因和结果紧密交织的话题，效果较差。

让分块式结构发挥作用

分块式结构最常见的弱点，是两个部分之间的断层。为了弥合这个断层，在原因部分和结果部分之间使用一个过渡段或几个过渡句：

These three factors — digital competition, lost advertising revenue, and corporate cost-cutting — did not simply weaken local newspapers. They set off a cascade of consequences that reshaped communities in ways that are still being felt today.

这个过渡告诉读者，你正在从原因转向结果，并表明这两个部分是相互关联的。

链式结构

链式结构把文章组织成一连串相互关联的事件，每个原因产生一个结果，这个结果又成为下一个事件的原因。这种结构反映了因果链在现实世界中实际的运作方式。

怎样做

Introduction + Thesis

Step 1: Initial cause → first effect
Step 2: First effect becomes cause → second effect
Step 3: Second effect becomes cause → third effect
Step 4: Third effect becomes cause → final effect

Conclusion

示例话题：睡眠不足怎样影响学业表现

第 1 步： A student stays up late studying (or scrolling social media), reducing sleep to fewer than six hours.

第 2 步： Insufficient sleep impairs the brain's ability to consolidate memories, meaning the material studied the night before is not effectively stored.

第 3 步： Poor memory consolidation leads to difficulty concentrating during the next day's classes, reducing the amount of new information absorbed.

第 4 步： Falling behind on new material creates anxiety, which makes it harder to fall asleep the following night, perpetuating the cycle.

第 5 步： Over weeks, the accumulating sleep debt and academic gaps result in significantly lower exam scores and overall course performance.

链式结构的长处

• 清楚地展示一个事件怎样引出下一个事件。
• 揭示因果关系背后的机制，而不只是起点和终点。
• 对于涉及过程、循环或逐步升级的顺序的话题很有效。
• 把复杂的关系拆成若干步骤，让它们更容易理解。

链式结构的局限

• 最适合线性的过程——当多个独立的原因共同促成一个结果时，效果较差。
• 可能会过度简化，暗示每个结果只有一个原因。
• 要求你找出链条中的每一环；有缺环就会损害可信度。

让链式结构发挥作用

链式结构的关键，是让每一环都清楚明确。永远不要假定读者能看出其中的联系。每一步都使用表示因果的语言：

Because students are sleeping fewer hours, their brains cannot effectively consolidate the information they studied. This failure of memory consolidation means that the next day's lecture builds on material that was never properly absorbed. As a result, students fall progressively further behind, which generates anxiety that further disrupts their sleep.

注意，每个句子都以一个表示因果的连接语开头或包含一个这样的连接语（"because"、"this failure means that"、"as a result"、"which generates"）。

逐点式结构

逐点式结构在同一个段落或同一部分中，把每个原因与相应的结果直接配成一对。当你想展示各个原因与其特定结果之间的具体关系时，这种结构很有用。

怎样做

Introduction + Thesis

Paragraph 1: Cause A → Effect A
Paragraph 2: Cause B → Effect B
Paragraph 3: Cause C → Effect C

Conclusion

示例话题：城市化对环境的影响

第 1 段： Increased construction and paving (cause) leads to the "urban heat island" effect, where cities are several degrees warmer than surrounding rural areas (effect).

第 2 段： Concentrated vehicle traffic and industrial activity (cause) produces elevated levels of air pollution, including particulate matter and ground-level ozone (effect).

第 3 段： Expansion of impervious surfaces like concrete and asphalt (cause) prevents rainwater from being absorbed into the ground, increasing the frequency and severity of urban flooding (effect).

逐点式结构的长处

• 每个原因与其结果之间的联系一目了然。
• 当存在各自独立、相互平行的因果对时，效果很好。
• 让文章组织紧凑、容易理解。
• 对于侧重比较、想展示多个平行过程的话题很有效。

逐点式结构的局限

• 当原因之间相互作用、共同产生结果时，效果较差。
• 如果每个段落都遵循同样的内部模式，可能会显得重复。
• 无法反映一个原因产生多个结果（或者反过来）的复杂情况。

选择合适的结构

用这份指南为你的话题选择最合适的结构：

情况	最合适的结构
话题中的原因和结果清楚地分开	分块式
话题涉及一个过程或一系列事件	链式
每个原因都有一个独立、对应的结果	逐点式
文章只关注原因，或者只关注结果	分块式（单方面）
因果关系复杂且相互交织	链式或组合式
你在时间压力下写作（考试）	分块式或逐点式

安排多个原因或多个结果

当你的文章讨论几个原因或几个结果时，你需要决定按什么顺序呈现它们。常用的排序策略有三种：

1. 按重要程度排序

把原因（或结果）从最不重要排到最重要。这样能积蓄势头，把最有力的论点留给读者。

While limited parking and high fuel costs encourage some commuters to use public transit, the most significant factor driving ridership increases is the introduction of reliable, frequent service with short wait times.

你也可以先写最重要的原因来抓住读者的注意力，再讨论其他辅助性的原因。在读者未必会读完整份文件的职场写作中，这种方法效果很好。

2. 按时间顺序排序

把原因（或结果）按照它们发生的时间先后排列。对于历史话题或涉及一系列事件的话题，这是很自然的做法。

The decline of the Roman Empire resulted from a series of compounding pressures that built over centuries: the overextension of military campaigns in the second century, the economic strain of maintaining distant borders in the third century, the political instability of rapid emperor succession in the fourth century, and finally the inability to repel barbarian invasions in the fifth century.

3. 按类别排序

按照类型或类别把原因（或结果）分组——比如经济原因、社会原因和政治原因。

The causes of the French Revolution can be understood in three dimensions: the economic crisis created by war debts and regressive taxation, the social resentment fueled by extreme inequality between the aristocracy and the common people, and the political failure of the monarchy to implement meaningful reform.

因果类文章的论点句

你的论点句应该清楚地表明文章将讨论原因、结果还是两者都讨论，并且应该预告文章的组织结构。

侧重原因的论点句

The shortage of affordable housing in major cities is driven by three interconnected factors: restrictive zoning laws that limit new construction, speculative investment that inflates property values, and the failure of federal housing subsidies to keep pace with rising costs.

侧重结果的论点句

The widespread adoption of smartphones has fundamentally altered social interaction, creating new forms of communication but also contributing to increased social isolation, shortened attention spans, and a decline in face-to-face conversation skills.

兼顾原因与结果的论点句

Decades of industrial agriculture, driven by the demand for cheap food and enabled by government subsidies, have degraded soil quality across the American Midwest, leading to decreased crop yields, increased dependence on chemical fertilizers, and the contamination of waterways feeding into the Gulf of Mexico.

注意，每个论点句都指出了具体的原因和／或结果，并以一种能预告文章主体段的方式来安排它们。

组合运用多种结构

高水平的因果类文章，常常结合多种结构的元素。比如，你可以用分块式结构来组织整篇文章（先写原因部分，再写结果部分），而在结果部分内部使用链式结构，来展示一个结果怎样引出另一个结果：

Block 1: Causes (organized by importance)
  - Cause 1
  - Cause 2
  - Cause 3

Block 2: Effects (organized as a chain)
  - These causes led to Effect A
  - Effect A triggered Effect B
  - Effect B resulted in Effect C

这种混合方式，既有分块式结构的清晰，又有链式结构的叙事力量。不要觉得自己被锁死在某一种组织模式里——用最能服务于你的论点句、最能帮助读者理解的任何组合。

小结

把一篇因果类文章组织好，需要为你的话题选择合适的组织模式。分块式结构把原因和结果分开，适用于简单直接的话题。链式结构追溯一连串相互关联的事件，擅长展示过程。逐点式结构把各个原因与其结果配成对，便于进行清楚、平行的分析。最好的结构，是能让你的因果论证对读者来说最清楚的那一种。

因果写作的实际运用

理解因果推理和组织结构必不可少，但看到这些概念运用于真实的写作，才能让它们真正派上用场。本节提供修改前后的例子，展示怎样把软弱的因果写作变成有力的分析，并讲解最常削弱因果论证的逻辑谬误。

修改前后：从较弱到较强的因果写作

仔细研究下面这些改写。每个「修改前」的例子都包含削弱因果写作的常见问题，每个「修改后」的例子都展示了怎样改正这些问题。

例 1：过度简化的因果关系

修改前（较弱）：

Video games cause violence in young people. Studies show that children who play violent video games are more aggressive. Therefore, violent video games should be banned.

问题：

• 断言了因果关系却没有加以证明。"Studies show" 很含糊——是哪些研究？
• 把相关当成了因果。可能是有攻击性的孩子被暴力游戏吸引，而不是游戏让他们变得有攻击性。
• 从一个站不住脚的因果主张，不经充分推理就跳到了一个政策结论。

修改后（较强）：

The relationship between violent video games and aggressive behavior in young people is more complex than popular media suggests. While several studies, including a 2015 meta-analysis by the American Psychological Association, found a small but consistent correlation between playing violent games and increased aggressive thoughts, the research does not establish that games directly cause violent behavior. Children who exhibit aggressive tendencies may be more attracted to violent games in the first place — a phenomenon researchers call self-selection bias. Furthermore, countries like Japan and South Korea, where video game consumption is among the highest in the world, have some of the lowest rates of violent crime. This suggests that cultural, economic, and social factors play a far larger role in determining violent behavior than media consumption alone.

改进之处：

• 承认了因果关系的复杂性。
• 引用了具体的论据，而不是含糊的说法。
• 直接处理了相关与因果的区别。
• 引入了一个挑战过度简化主张的反例。
• 考虑了其他的解释。

例 2：因果链中缺少环节

修改前（较弱）：

Deforestation causes flooding. When trees are cut down, floods happen. Governments should stop deforestation to prevent flooding.

问题：

• 只呈现了因果链的第一环和最后一环，没有解释中间的步骤。
• 读者完全不了解其中的机制——砍掉树木是怎样导致洪水的？
• 政策建议与分析脱节。

修改后（较强）：

Deforestation significantly increases the risk of flooding through a chain of environmental effects. Trees play a critical role in the water cycle: their root systems absorb rainfall and hold soil in place, while their canopy slows the rate at which rain reaches the ground. When large areas of forest are cleared, this natural water management system is eliminated. Rainwater runs directly off the exposed soil surface, carrying topsoil with it into streams and rivers. Over time, this sediment accumulates on riverbeds, reducing the channels' capacity to hold water. When heavy rains arrive — rains that the forest would have absorbed — the diminished rivers overflow their banks. This process explains why regions that have experienced rapid deforestation, such as the highlands of Haiti and parts of Borneo, suffer flooding at rates far higher than neighboring forested areas with similar rainfall patterns.

改进之处：

• 因果链中的每一环都得到了明确的解释。
• 读者理解了其中的机制：树根吸收水分，砍伐消除了这种吸收，径流带走泥沙，河床抬高，河水泛滥。
• 具体的地理实例支撑了因果论证。
• 这段文字是在证明、而不仅仅是断言这种因果关系。

例 3：忽视多个原因

修改前（较弱）：

The obesity epidemic is caused by fast food. Fast food restaurants serve unhealthy food with too many calories. If people stopped eating fast food, obesity would decrease.

问题：

• 把一个复杂的现象归结为单一的原因。
• 忽视了其他促成因素。
• 结论（"if people stopped eating fast food"）把解决办法过度简化了。

修改后（较强）：

The rise in obesity rates across developed countries over the past four decades cannot be attributed to any single cause. The proliferation of fast food restaurants has certainly played a role, as these establishments serve calorie-dense meals with portions that have grown significantly since the 1980s. However, fast food is only one factor among many. Sedentary lifestyles have become the norm as desk-based work has replaced physical labor and screen-based entertainment has replaced outdoor recreation. Food deserts in low-income neighborhoods limit access to affordable fresh produce, pushing residents toward processed and packaged alternatives. Agricultural subsidies for corn and soy have made processed ingredients like high-fructose corn syrup and hydrogenated oils artificially cheap, encouraging food manufacturers to use them heavily. Marketing budgets for unhealthy foods dwarf those for fruits and vegetables by a ratio of roughly 25 to 1. And genetic predispositions mean that some individuals are more susceptible to weight gain than others under identical dietary conditions. Addressing obesity effectively requires acknowledging this web of causes rather than focusing on any single culprit.

改进之处：

• 承认了多个原因，而不是把责任归于一个因素。
• 为每一个促成因素都提供了具体的论据。
• 展示了不同的原因怎样相互作用、相互强化。
• 结论反映了分析的复杂性。

例 4：把时间先后当成因果

修改前（较弱）：

After the new principal arrived, test scores at the school increased by 15%. The new principal clearly caused the improvement in student performance.

问题：

• 认为既然事件 B 发生在事件 A 之后，就是 A 导致了 B（即「后此谬误」，post hoc fallacy）。
• 忽视了成绩提高的其他可能解释。

修改后（较强）：

Test scores at Lincoln High School rose by 15% in the two years following the appointment of a new principal. While it is tempting to attribute this improvement directly to the new leadership, a careful analysis reveals a more complicated picture. The score increase coincided with several other changes: the district implemented a new math curriculum, the school received a federal grant that funded additional tutoring staff, and several experienced teachers who had planned to retire chose to stay on for an additional year. The new principal may have contributed to the improvement through policy decisions and a shift in school culture, but isolating her effect from these other factors is difficult. Attributing the entire 15% gain to a single change in leadership oversimplifies a situation where multiple initiatives were producing results simultaneously.

改进之处：

• 指出了原来推理中的逻辑错误。
• 对同一个结果提出了其他的解释。
• 承认新校长可能起了作用，却没有宣称她是唯一的原因。
• 展示了有力的因果写作所需要的分析上的审慎。

因果推理中常见的逻辑谬误

逻辑谬误是削弱论证的推理错误。因果写作尤其容易陷入几种特定的谬误。在自己的文章中——以及在别人的论证中——识别出这些谬误，对于写出可信的分析必不可少。

1. 后此谬误（Post Hoc Ergo Propter Hoc，「在此之后，因此由此」）

这是最常见的因果谬误。它认为既然一个事件发生在另一个事件之后，前一个事件就导致了后一个事件。

例： I wore my lucky socks and we won the game. My socks caused us to win.

学术写作中的例子： Crime rates dropped after the city installed new streetlights. Therefore, the streetlights reduced crime.

问题所在： 单凭时间先后并不能证明因果关系。犯罪率下降可能另有与此无关的原因：季节性的趋势、警务策略的改变，或者人口结构的变化。

怎样避免： 确立一个把原因和结果联系起来的合理机制，并考虑其他的解释。

2. 相关不等于因果

两件同时发生、或者朝同一方向变化的事情，不一定有因果关系。

例： Countries with higher chocolate consumption have more Nobel Prize winners. Therefore, eating chocolate helps people win Nobel Prizes.

学术写作中的例子： Students who eat breakfast earn higher grades. Therefore, eating breakfast causes better academic performance.

问题所在： 这种相关性可能可以用第三个变量来解释。较富裕的国家消费更多的巧克力，同时也在教育上投入更多。吃早餐的学生可能来自更稳定的家庭，得到的学业支持也更多。

怎样避免： 寻找混杂变量（confounding variables）——可能同时解释表面上的原因和表面上的结果的第三因素。当你无法确立因果机制时，使用 "is associated with" 而不是 "causes" 这样的措辞。

3. 单一原因谬误

把一个复杂的结果归结于一个原因，而实际上起作用的是多个因素。

例： The team lost because the goalkeeper made an error.

学术写作中的例子： Poverty is caused by a lack of education.

问题所在： 复杂的结果几乎总是有多个原因。这支球队可能还存在中场表现不佳、战术安排薄弱和运气不好等问题。贫困的原因除了教育程度，还有结构性的不平等、歧视、医疗费用、住房市场以及许多其他因素。

怎样避免： 承认多个原因。使用 "one significant contributing factor" 而不是 "the cause" 这样的措辞。

4. 滑坡谬误

声称一个事件会通过一连串事件不可避免地导致一个极端的结果，却没有证据表明链条中的每一环都很可能发生。

例： If we allow students to use calculators in math class, they will never learn to do math by hand, and eventually no one will understand mathematics at all.

学术写作中的例子： If the government regulates one industry, it will soon regulate all industries, leading to a completely state-controlled economy.

问题所在： 链条中的每一步都被说成是必然的，而实际上它并不确定。这个论证从一个温和的原因直接跳到一个极端的结果，却没有证明中间的步骤。

怎样避免： 只提出你能用论据支撑的结果。如果你在追溯一条因果链，就为每一环都提供论据，而不只是第一环和最后一环。

5. 因果推理中的非此即彼

在存在更多可能性的情况下，只呈现两种可能的原因或结果。

例： Either violent video games are causing youth violence, or they have absolutely no effect at all.

学术写作中的例子： The economic downturn was caused either by government overspending or by corporate greed.

问题所在： 现实通常更加微妙。电子游戏可能对攻击性有一种微小的、取决于情境的影响，却并不「导致暴力」。经济衰退通常是许多相互作用的因素造成的。

怎样避免： 考虑所有可能的原因和结果。当现实是「两者兼有」或「视情况而定」时，避免「非此即彼」的表述。

6. 因果倒置

把结果误当成原因。

例： Successful people read a lot. Therefore, reading causes success.

问题所在： 因果方向可能是反过来的。已经成功的人可能有更多的闲暇时间和资源来阅读。或者，阅读和成功可能都是由第三个因素引起的，比如好奇心或受教育的机会。

学术写作中的例子： Countries with strong economies have better healthcare. Therefore, good healthcare causes economic growth.

实际上，可能是经济增长为更好的医疗提供了资金，而不是反过来。或者两者都是由有效的治理推动的。

怎样避免： 考虑这种因果关系是否可能反过来。问问自己：「会不会其实是结果在产生原因？」

运用这些经验

写一篇因果类文章时，在提交之前，在心里过一遍这份清单：

1. 我是否把相关当成了因果？ 我是否只因为两件事同时发生，就认定它们之间有因果联系？
2. 我解释了机制吗？ 读者能看出原因实际上是怎样产生结果的吗？
3. 我考虑了其他的解释吗？ 是否有其他因素也能解释这个结果？
4. 我承认了复杂性吗？ 我是否把一个复杂的结果归结为一个原因，从而过度简化了？
5. 我追溯了完整的链条吗？ 在我的原因和结果之间，是否缺少了环节？
6. 我避免了滑坡谬误吗？ 我是否在没有为每一步提供论据的情况下，提出了极端的结果？

用这些问题检查自己的文章，会让你的因果论证明显更有说服力、更可信。

因果写作速查

本节汇集了因果写作的各种工具：信号词和信号短语、组织模板、检查清单，以及一份常见错误及其改正的清单。起草和修改因果类文章时，把它当作速查资料来用。

信号词与信号短语

信号词和信号短语是因果写作的「结缔组织」。它们明确地告诉读者存在因果关系，并说明这种关系的方向——是什么导致了什么。

表示原因的词和短语

引出或解释一个原因时使用这些：

信号词	示例
because	Test scores improved because the school extended tutoring hours.
since	Since the factory closed, unemployment in the town has doubled.
due to	Due to rising sea levels, several island nations face an existential threat.
owing to	Owing to decades of neglect, the infrastructure is crumbling.
as a result of	As a result of the new policy, employee turnover decreased by 18%.
caused by	The shortage was caused by a disruption in the global supply chain.
stems from	The conflict stems from long-standing territorial disputes.
is driven by	The migration is driven by drought and economic hardship.
results from	The decline in reading scores results from reduced library funding.
is attributed to	The improvement is attributed to better teacher training programs.
on account of	On account of the severe weather, flights were delayed for six hours.
the reason for ... is	The reason for the delay is a shortage of qualified inspectors.
one factor is	One factor contributing to the decline is increased competition from imports.
this can be traced to	This pattern can be traced to policies enacted in the 1990s.

表示结果的词和短语

引出或解释一个结果时使用这些：

信号词	示例
as a result	As a result, hospital wait times have increased dramatically.
consequently	Consequently, many families can no longer afford homeownership.
therefore	Therefore, the school board voted to extend the academic year.
thus	Thus, the experiment confirmed the original hypothesis.
hence	Hence, policymakers must consider alternative energy sources.
for this reason	For this reason, early intervention programs are critical.
so	Demand exceeded supply, so prices increased sharply.
leads to	Chronic stress leads to elevated cortisol levels and weakened immunity.
results in	The policy results in higher costs for small businesses.
gives rise to	Rapid urbanization gives rise to housing shortages and overcrowding.
brings about	The reform brought about significant improvements in patient outcomes.
contributes to	Sedentary lifestyles contribute to increased rates of heart disease.
produces	The chemical reaction produces a toxic byproduct.
causes	Prolonged exposure causes irreversible damage to lung tissue.
has the effect of	The tax has the effect of discouraging excessive consumption.
means that	This shortage means that patients face longer wait times for treatment.
the consequence is	The consequence is a generation of students with weaker writing skills.
the outcome is	The outcome is a more resilient and diversified economy.

用于因果链的词和短语

用这些来展示一个结果怎样变成下一个结果的原因：

信号词	示例
which in turn	Deforestation causes soil erosion, which in turn leads to river sedimentation.
this then	Unemployment rises. This then reduces consumer spending across the region.
thereby	The vaccine reduces infection rates, thereby lowering hospital admissions.
triggering	The earthquake damaged the reactor, triggering a nuclear meltdown.
setting off	The assassination set off a chain of events that led to world war.
sparking	The verdict sparked protests that spread to cities across the country.
creating a cycle of	Poverty limits access to education, creating a cycle of disadvantage.
compounding	Rising temperatures melt ice caps, compounding the effects of sea level rise.
escalating into	The trade dispute escalated into a full economic sanctions regime.

组织模式模板

把这些模板当作你文章的起步框架。根据你具体的话题和论点句加以调整。

模板 1：侧重原因的文章（分块式结构）

Introduction
  - Hook: A striking effect or consequence
  - Context: Background on the issue
  - Thesis: The effect is caused by [Cause 1], [Cause 2], and [Cause 3]

Body Paragraph 1: Cause 1
  - Topic sentence identifying the cause
  - Evidence and explanation of how this cause operates
  - Analysis connecting to the effect

Body Paragraph 2: Cause 2
  - Topic sentence identifying the cause
  - Evidence and explanation
  - Analysis connecting to the effect

Body Paragraph 3: Cause 3 (the most significant)
  - Topic sentence identifying the cause
  - Evidence and explanation
  - Analysis connecting to the effect

Conclusion
  - Restate thesis
  - Synthesize how causes interact
  - Broader implications or call to action

模板 2：侧重结果的文章（分块式结构）

Introduction
  - Hook: A dramatic or surprising cause
  - Context: Background on the cause and its significance
  - Thesis: [Cause] has led to [Effect 1], [Effect 2], and [Effect 3]

Body Paragraph 1: Effect 1
  - Topic sentence identifying the effect
  - Evidence showing this effect exists
  - Analysis of significance

Body Paragraph 2: Effect 2
  - Topic sentence identifying the effect
  - Evidence showing this effect exists
  - Analysis of significance

Body Paragraph 3: Effect 3 (the most significant)
  - Topic sentence identifying the effect
  - Evidence showing this effect exists
  - Analysis of significance

Conclusion
  - Restate thesis
  - Synthesize the combined impact of the effects
  - Future implications or prediction

模板 3：链式文章

Introduction
  - Hook: The final effect in the chain (dramatic outcome)
  - Context: The initial cause that started the chain
  - Thesis: [Initial cause] set off a chain of events that ultimately led to [final effect]

Body Paragraph 1: Link 1
  - Initial cause → first effect
  - Explanation of the mechanism

Body Paragraph 2: Link 2
  - First effect becomes cause → second effect
  - Explanation of the mechanism

Body Paragraph 3: Link 3
  - Second effect becomes cause → final effect
  - Explanation of the mechanism

Conclusion
  - Restate the full chain in compressed form
  - Identify the most critical link (where intervention would be most effective)
  - Broader implications

模板 4：兼顾原因与结果的文章（分块式结构）

Introduction
  - Hook and context
  - Thesis: [Topic] is caused by [causes] and has led to [effects]

Body Section 1: Causes
  - Paragraph: Cause 1
  - Paragraph: Cause 2
  - Paragraph: Cause 3

Transition paragraph or sentence linking causes to effects

Body Section 2: Effects
  - Paragraph: Effect 1
  - Paragraph: Effect 2
  - Paragraph: Effect 3

Conclusion
  - Restate thesis
  - Show how understanding the causes can help address the effects
  - Call to action or prediction

常见错误及改正方法

这份清单涵盖了因果写作中最常见的错误，并附有具体的改正。

错误 1：没有论据就断言因果关系

错误： Social media causes depression in teenagers.

正确： A longitudinal study published in JAMA Pediatrics in 2019 found that adolescents who spent more than three hours per day on social media had twice the risk of developing symptoms of depression, suggesting a significant association between heavy social media use and adolescent mental health.

因果主张需要论据。主张越强，所需的论据也就越有力。

错误 2：使用含糊的因果措辞

错误： Pollution affects the environment.

正确： Nitrogen runoff from agricultural fertilizers causes algal blooms in freshwater lakes, which deplete oxygen levels and kill fish populations — a process known as eutrophication.

"Affects" 太含糊了。要具体说明是哪种污染、环境的哪个方面，以及具体的机制是什么。

错误 3：把时间先后当成因果

错误： After the company hired a new CEO, profits increased. The new CEO was responsible for the profit increase.

正确： Profits increased following the appointment of a new CEO. While the new CEO implemented several cost-reduction measures that likely contributed to the improvement, the profit increase also coincided with a broader industry recovery and the launch of a product that had been in development for three years before her arrival. Isolating her specific impact requires controlling for these other factors.

一定要考虑同一时期还有什么发生了变化。

错误 4：把个人观点当作因果事实

错误： The reason students fail is that they are lazy.

正确： Students underperform for a variety of reasons, including inadequate preparation in earlier grades, difficult home environments, learning disabilities that go undiagnosed, and, in some cases, insufficient motivation. Attributing failure to a single character trait ignores the systemic factors that research has consistently identified as more significant predictors of academic outcomes.

学术写作中的因果主张，必须以论据为基础，而不是以个人判断为基础。

错误 5：忽视反方意见

错误： Raising the minimum wage causes unemployment. Higher labor costs force businesses to cut jobs.

正确： Critics of minimum wage increases argue that higher labor costs force businesses to cut jobs. However, empirical evidence on this point is mixed. A landmark study by economists David Card and Alan Krueger found that a minimum wage increase in New Jersey did not reduce employment in the fast-food industry compared to neighboring Pennsylvania. More recent research suggests that moderate minimum wage increases may reduce turnover costs and boost productivity enough to offset higher wages. The causal relationship between minimum wages and employment is far more complex than a simple supply-and-demand model would predict.

有力的因果写作会预判并回应反方意见。

错误 6：没有区分相关与因果

错误： Countries with more cell phones have higher GDP. Cell phones cause economic growth.

正确： There is a strong positive correlation between cell phone adoption and GDP across countries. However, this correlation does not prove that cell phones drive economic growth. Wealthier countries can afford more cell phones, and both variables may be influenced by underlying factors such as infrastructure quality, education levels, and governance. That said, targeted studies in developing countries have shown that mobile phone access enables farmers to check market prices and reduces information asymmetry, suggesting that mobile technology does contribute to economic activity in specific, measurable ways.

因果类文章的自我修改检查清单

提交任何因果类文章之前，都使用这份清单：

论点句与结构

• 我的论点句清楚地表明了我要讨论的是原因、结果，还是两者都讨论。
• 我的论点句点出了具体的原因和／或结果，而不是含糊的泛泛之谈。
• 我选择了一种适合我话题的组织结构（分块式、链式或逐点式）。
• 我的主体段遵循了论点句所预告的结构。

因果推理

• 我解释了每个因果主张背后的机制——读者能看出原因是怎样产生结果的。
• 在相关的地方，我区分了直接原因和间接原因。
• 话题复杂时，我承认了多个原因。
• 我没有把相关当成因果。
• 我没有仅凭时间先后就认定因果关系。
• 我考虑并回应了其他的解释。

论据与分析

• 每一个因果主张都有具体的论据（统计数据、研究、例子）支撑。
• 我分析了论据，而不只是把它们摆出来。
• 我用了信号词和信号短语，让因果关系清楚明确。
• 我回应了针对我因果主张的可能的反方意见。

语言与精确性

• 我使用了精确的因果措辞（"leads to"、"results in"、"contributes to"），而不是含糊的说法（"affects"、"impacts"、"relates to"）。
• 当因果联系并不确定时，我恰当地使用了留有余地的措辞（用 "contributes to" 而不是 "causes"）。
• 我的过渡语清楚地向读者展示了每个段落怎样与下一个段落相连。
• 我的结论综合了因果论证，而不只是重复它。

速查：表示因果强度的措辞

让你的措辞与论据的强度相匹配：

论据强度	可用的措辞
有力的论据证明直接因果	causes, produces, results in, leads directly to
充分的论据证明有促成作用	contributes to, is a major factor in, plays a significant role in
中等的论据证明有关联	is associated with, is linked to, correlates with
有限或不确定的论据	may contribute to, appears to influence, has been suggested as a factor
承认复杂性	is one of several factors, interacts with other variables to produce

使用能准确反映论据强度的措辞，是可信的学术写作的标志之一。言过其实会削弱你的论证，措辞精确则能加强它。