📚 Case Study Practice for Year 10 Eduqas Economics | 10年级Eduqas经济案例分析实战演练
Case study questions are a cornerstone of the Eduqas GCSE Economics exam. They require you to move beyond textbook definitions and apply your knowledge to interpret real-world scenarios, extract relevant data, and construct reasoned arguments. Mastering this skill not only boosts your exam performance but also builds the analytical thinking essential for further study in economics. This article provides a structured, bilingual walk-through of practical case study techniques, complete with worked examples and revision strategies tailored to Year 10 learners.
案例分析题是Eduqas GCSE经济考试的基石。它们要求你超越课本定义，运用所学知识解读真实场景、提取相关数据并构建有逻辑的论证。掌握这项技能不仅能提升考试成绩，还能培养经济学深造所必需的分析思维。本文为中英双语的结构化实战指南，包含解题技巧、完整示例以及为10年级学生定制的复习策略。
1. Understanding Case Study Questions | 理解案例分析题
Eduqas papers typically present a short written passage accompanied by data such as tables, charts or graphs. The questions that follow will test identification of key concepts, analysis of economic changes and evaluation of policy responses. You are expected to use the evidence provided, not just your own memory.
Eduqas试卷通常会提供一段简短文字，并附有表格、图表等数据。后续问题将考查对关键概念的识别、经济变化的分析以及对政策反应的评估。考查的是你运用所给证据的能力，而不仅仅依靠记忆。
Before you even read the case, scan the questions. This primes your brain to look for relevant signals in the text. Underline command words such as 'explain', 'analyse', 'discuss' or 'evaluate' because they determine the depth of answer required. A common mistake is to describe when the question asks for analysis.
在阅读案例之前，先快速浏览问题。这能让大脑提前准备好捕捉文本中的相关信息。划出指令词，例如“解释”、“分析”、“讨论”或“评估”，因为它们决定了答案所需的深度。一个常见的错误是题目要求分析时却只是在描述。
2. Active Reading and Annotation | 主动阅读与标注
Treat the case material like a detective's clue board. Read through twice: first for gist, second for detail. Use a highlighter to mark figures, percentages, names of products, countries and any mention of government action. Create a simple key – for example, 'D' for demand factor, 'S' for supply factor, 'G' for government intervention.
将案例材料视为侦探的线索板。至少阅读两遍：第一遍了解大意，第二遍关注细节。用荧光笔标出数字、百分比、产品名称、国家以及任何政府行动。创建简单的标记符号——例如，“D”代表需求因素，“S”代表供给因素，“G”代表政府干预。
Annotate the margin with quick economic labels. If the text says 'average incomes rose by 4%', write 'Y↑ → demand for normal goods↑' next to it. If it mentions 'new technology cut production costs', note 'cost-push ↓, supply → outwards'. This transforms a flat paragraph into a dynamic economic model.
在页边空白处快速标注经济学标签。如果文内提到“平均收入增长了4%”，旁边就写上“Y↑ → 正常商品需求↑”。如果提到“新技术降低了生产成本”，就标注“成本推动↓，供给向外平移”。通过这样的标注，平淡的段落就变成了动态的经济模型。
3. Identifying Economic Concepts | 识别经济概念
Case studies are built around core concepts from the Eduqas specification: scarcity, opportunity cost, externalities, elasticity, market structures, macroeconomic objectives and international trade. Train yourself to spot them. For instance, a story about a shortage of concert tickets is about supply and demand; a news clip on a sugar tax is about negative externalities and government intervention.
案例分析围绕Eduqas课程大纲的核心概念构建：稀缺性、机会成本、外部性、弹性、市场结构、宏观经济目标以及国际贸易。训练自己迅速识别它们。例如，关于演唱会门票短缺的报道涉及供需关系；关于糖税的一则新闻涉及负外部性和政府干预。
Create a personal glossary that links trigger words to economic theory. 'Waiting list' signals excess demand and price below equilibrium. 'Firms leaving the industry' signals low or negative profit, possibly linked to a downward shift in demand or increased regulation. Building this neural network makes exam responses faster and more accurate.
制作一份将触发词与经济学理论联系起来的个人词汇表。“等候名单”暗示超额需求以及价格低于均衡水平。“企业退出该行业”暗示利润低或为负，可能与需求下降或监管加强有关。构建这样的神经网络能让考试答题更快更准。
4. Demand and Supply Analysis | 需求与供给分析
Most case studies hinge on shifts in demand or supply. Always ask: which direction does the curve move, and why? Use the factors from the specification – income, taste, price of substitutes/complements for demand; production cost, technology, taxes, subsidies for supply. Draw a simple diagram in your answer, even if not explicitly required, to clarify your thinking.
大多数案例研究都离不开需求或供给的变动。始终自问：曲线向哪个方向移动，为什么？运用大纲中的要素——收入、偏好、替代品/互补品价格影响需求；生产成本、技术、税收、补贴影响供给。即使题目未明确要求，也要在答案中画一个简图，这能让思路更清晰。
Worked example: The case states that a rise in popularity of electric scooters has coincided with higher lithium battery costs. Analyse the effect on the scooter market. Step one: demand shifts right due to changing tastes. Step two: supply shifts left due to rising input costs. The new equilibrium will definitely show a higher price; the quantity effect is ambiguous – it depends on the relative size of the shifts. Always state this ambiguity to earn evaluation marks.
示例演练：案例指出电动滑板车越来越受欢迎，同时锂电池成本上升。分析对滑板车市场的影响。第一步：因偏好变化，需求曲线向右移动。第二步：因投入品成本上升，供给曲线向左移动。新均衡点的价格一定会上升；对数量的影响则不确定——取决于两条曲线移动幅度的相对大小。务必说明这种不确定性以获取评估分。
5. Elasticity Calculations and Implications | 弹性计算与影响
Numerical data in a case study often allows you to calculate elasticities. PED, YED and XED are core tools. Even if the question does not ask for a full calculation, estimating whether demand is elastic or inelastic can transform your analysis of tax incidence or price changes on total revenue.
案例中的数据常常可以用来计算弹性。需求价格弹性（PED）、需求收入弹性（YED）和需求交叉弹性（XED）是核心工具。即使题目没有要求完整计算，判断需求是富有弹性还是缺乏弹性也能完全改变你对税收负担或价格变动对总收入影响的分析。
Remember the basic formulas:
记住基本公式：
PED = %ΔQd / %ΔP
YED = %ΔQd / %ΔY
Case example: The price of a luxury brand watch fell from £500 to £400, and quantity demanded rose from 1000 units to 1500 units. %ΔQd = (+500/1000)×100 = +50%. %ΔP = (-100/500)×100 = -20% = +50/-20 = -2.5 (treat absolute value 2.5, so demand is elastic). This suggests the firm' price effect. Always link the calculation to business or government revenue consequences.
案例示例：某奢侈品牌手表价格从500英镑降至400英镑，需求量从1000单位上升至1500单位。%ΔQd = (+500/1000)×100 = +50%。%ΔP = (-100/500)×100 = -20%。PED = +50/-20 = -2.5（取绝对值2.5，故需求富有弹性）。这表明企业总收入增加了，因为数量效应超过了价格效应。始终将计算结果与企业或政府的收入后果联系起来。
6. Market Failure and Government Intervention | 市场失灵与政府干预
Eduqas case studies frequently feature environmental issues, smoking, fast food or education under-provision. These signal market failure. Use the case evidence to identify the type of externality, information gap or public good problem. Then explain why the free market leads to over- or under-consumption.
Eduqas的案例经常涉及环境问题、吸烟、快餐或教育供给不足等话题，这都意味着市场失灵。运用案例证据识别外部性类型、信息不对称或公共品问题。然后解释为何自由市场会导致过度消费或消费不足。
When the text describes a new tax on plastic packaging, your analysis must go beyond 'the supply curve shifts left'. Draw the negative externality diagram and show how the tax internalises the external cost. Explain that the tax shifts the supply curve upward by the amount of the tax, moving the market closer to the socially optimum quantity. Evaluate: Is the tax set at the right level? Is demand inelastic, making the tax ineffective at reducing quantity? Always bring in evaluation.
当文内描述对塑料包装征收新税时，你的分析不能仅停留在“供给曲线向左移动”。画出负外部性图示，说明税收如何将外部成本内部化。解释税收使供给曲线向上平移税额的幅度，使市场数量靠近社会最优水平。进行评估：税率设定是否合适？需求是否缺乏弹性，从而削弱税收的限制数量效果？始终加入评估。
7. Macroeconomic Objectives and Policies | 宏观经济目标与政策
If the case presents data on GDP growth, unemployment rate, inflation or the current account, you are in the macroeconomic realm. The Eduqas specification expects you to understand conflicts among objectives, e.g. reducing unemployment may fuel inflation. Extract the data and plot it mentally: is the economy in a boom or recession?
如果案例给出GDP增长率、失业率、通胀率或经常账户数据，那么你进入了宏观经济学领域。Eduqas大纲要求你理解目标之间的冲突，例如降低失业率可能会加剧通货膨胀。提取数据并心中绘图：经济正处于繁荣期还是衰退期？
wer government spending) or tight monetary policy (higher interest rates) is appropriate. Always state the transmission mechanism: higher interest rates → higher cost of borrowing → lower consumption and investment → aggregate demand shifts left → price level falls. Use the case's own numbers to support your reasoning.
让案例引导你的政策建议。如果通胀高于目标且增长强劲，那么紧缩性财政政策（增税、减少政府支出）或紧缩货币政策（提高利率）就是合适的。务必说明传导机制：利率上升 → 借贷成本增加 → 消费和投资下降 → 总需求左移 → 物价水平下降。用案例中的具体数字来支撑你的推理。
8. International Trade and Globalisation | 国际贸易与全球化
Case narratives involving imports, exports, tariffs or protectionism require application of comparative advantage and trade bloc theory. Look for clues about domestic industry complaints, job losses, or consumer gains from cheaper imports. Annotate the winners and losers from trade.
涉及进口、出口、关税或保护主义的案例叙述要求运用比较优势和贸易集团理论。寻找关于国内行业抱怨、失业或消费者因廉价进口品获益的线索。标注贸易的赢家与输家。
For instance, if the UK imposes a tariff on imported steel, explain the diagram: world supply curve shifts up by the tariff, domestic price rises, domestic producers gain surplus while consumers lose and a deadweight loss emerges. Evaluate: Could this protect strategic domestic industries, or will it raise costs for manufacturing exporters? The case often provides data to weigh these pros and cons.
例如，倘若英国对进口钢铁征收关税，解释图示：世界供给曲线因关税上移，国内价格上涨，国内生产者剩余增加而消费者剩余减少，并产生无谓损失。进行评估：这能否保护战略性国内产业，还是会提高制造型出口商的成本？案例常常提供数据以权衡这些利弊。
9. Evaluation and Judgement | 评估与判断
High-mark questions always demand evaluation. This means moving beyond a single 'right answer' to consider short-term versus long-term effects, magnitude of impact, dependence on assumptions, and stakeholder conflicts. Use phrases like 'it depends on', 'in the long run, however', 'the extent to which this policy works relies on'.
高分题目总是要求评估。这意味着超越单一“正确答案”，考虑短期与长期影响、影响幅度、对假设的依赖性以及利益相关者的冲突。使用“这取决于”、“然而，从长期看”、“此政策在多大程度上有效取决于”等表述。
In your answer, always present an interim conclusion before your final judgement. For example: 'In the short run, the subsidy will reduce the price for consumers and increase output. However, in the long run, it may encourage inefficiency among domestic producers and strain the government budget. Therefore, while the policy addresses market failure temporarily, a more sustainable solution might involve a gradually phased-out subsidy combined with investment in technology.' This structure shows depth and earns top bands.
在答案中，一定要在最终判断前先给出一个中间结论。例如：“短期看，补贴将降低消费者支付的价格并增加产量。然而，长期看来，它可能助长国内生产商的低效率并给政府预算带来压力。因此，该政策虽然能暂时纠正市场失灵，但更可持续的方案可能是结合技术投资逐步退出补贴。”这种结构展示了思考深度，能获得最高评分等级。
10. Common Pitfalls and Practice Example | 常见错误与练习示例
Avoid these frequent mistakes: regurgitating textbook definitions without applying them to the case; ignoring the data provided; confusing micro and macro reasoning; and forgetting to label axes on diagrams. Always reference the case text explicitly – even a short quote can demonstrate application.
避免以下常见错误：照搬课本定义却不结合案例分析；忽视所给数据；混淆微观与宏观推理；忘记在图表上标注坐标轴。务必明确引用案例文句——哪怕简短引用也能体现应用能力。
Now, a short practice case: 'The UK government has introduced a £ youth vaping. Sales data shows that before the tax, 10 million units were sold monthly at £5 each. After the tax, the price rose to £6.50 and sales fell to 7 million units.' umption. (Answers: PED = (-3m/10m)/(+1.5/5) = -0.3/0.3 = -1.0, unit elastic. Tax revenue = £2 × 7m = £ y fall is proportionate; effectiveness depends on how much reduction is socially desired.)
现在，练习一个简短案例：“英国政府对一次性电子烟征收每单位2英镑的税以减少青少年吸食。销售数据显示，税前每月销量为1000万支，单价5英镑。税后价格升至6.50英镑，销量降至700万支。”计算需求价格弹性和税收收入。解释这项税是否可能有效减少消费。（答案：PED = (-3m/10m)/(+1.5/5) = -0.3/0.3 = -1.0，单位弹性。税收收入 = £2 × 7m = £1400万。由于需求是单位弹性，数量下降比例与价格上升比例相同；有效性取决于期望的社会减量程度。）
| Key data in case | Economic application | 案例关键数据 | 经济学应用 |
|---|---|---|---|
| Price rise | Movement along demand curve vs shift | 价格上涨 | 沿需求曲线移动还是曲线平移 |
| Tax amount | Tax incidence, elasticity burden | 税额 | 税收归宿、弹性负担 |
| Quantity change | Elasticity calculation, total revenue effect | 数量变化 | 弹性计算、总收入效应 |
Integrate such structured analysis into your exam technique. The more you practice with real-world-style cases, the more automatic correct economic reasoning becomes.
将这种结构化分析融入答题技巧中。越多地用真实风格的案例进行练习，正确的经济学推理就越能成为一种本能。
Published by TutorHao | Economics Revision Series | aleveler.com
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