📚 Year 11 Eduqas Economics Case Study Masterclass | Year 11 Eduqas 经济：案例分析实战演练
The case study question is the centrepiece of your Eduqas GCSE Economics exam. It demands more than just textbook definitions; you must apply, analyse and evaluate real-world data under timed conditions. This masterclass will walk you through a complete practice exercise, sharpening the skills that turn a good answer into a great one.
案例分析题是 Eduqas GCSE 经济考试的核心。它要求的不只是背诵定义，而是在限时条件下运用、分析与评价真实数据。本实战演练将带你完整走一遍练习，打磨那些能把好答案变成高分答案的技能。
1. Why Case Studies Matter for Eduqas Economics | 为什么案例分析对 Eduqas 经济如此重要
Eduqas Component 2 (Paper 2) always includes a substantial case study carrying high marks. The exam board wants to see you think like an economist, not just recall facts. You will be given a scenario – perhaps a firm raising prices, a government introducing a tax, or a country facing inflation – and asked to explain causes, consequences, and possible policies.
Eduqas 第二单元（试卷二）总有一道占分很重的案例分析题。考官想看到你像经济学家一样思考，而不仅仅是复述知识点。你会拿到一个场景——比如一家企业涨价、政府征收新税，或一个国家面临通胀——并被要求解释原因、后果和可行的政策。
Success in the case study comes from three layers: knowledge (key terms, diagrams), application (linking every point to the context), and evaluation (weighing up alternatives, considering short-run vs long-run). This guide will practise all three with a realistic example.
案例题成功的关键在于三个层次：知识（关键术语、图示）、应用（每一点都要联系上下文）和评价（权衡不同选择，考虑短期与长期）。本指南将用一个逼真的例子来练习这三层能力。
2. Our Practice Case Study: Rising Coffee Prices | 我们的练习案例：咖啡价格上涨
Today’s case is based on a global supply shock. Read the extract carefully, then use it to answer the questions that follow. Mark allocation and command words are typical of Eduqas.
今天的案例基于一次全球供给冲击。仔细阅读以下摘要，然后回答后面的问题。分值和指令词均模拟 Eduqas 风格。
Extract: Global coffee bean production has fallen by 12% this year because of severe drought in Brazil, the world’s largest producer. At the same time, demand for premium coffee continues to rise in developed economies. As a result, the average retail price of ground coffee in the UK has increased from £3.20 to £4.50 per 250g bag. Several UK coffee shops have announced they will absorb part of the higher costs by reducing their profit margins, while others are passing the full increase on to consumers. The government is considering a temporary subsidy for coffee farmers to stabilise supplies.
摘要：由于全球最大生产国巴西遭遇严重干旱，今年全球咖啡豆产量下降了12%。与此同时，发达经济体对高端咖啡的需求持续上升。因此，英国研磨咖啡的平均零售价已从每250克3.20英镑涨至4.50英镑。几家英国咖啡店宣布将通过压缩利润来吸收部分成本上升，而其他店家则把全部涨幅转嫁给消费者。政府正在考虑向咖啡种植者提供临时补贴以稳定供应。
3. Deconstructing the Command Words | 拆解指令词
Before writing a single sentence, identify what each question is really asking. Eduqas uses precise command words. ‘Explain’ means give reasons and show how an effect works. ‘Analyse’ means break down into parts and examine impacts. ‘Evaluate’ means weigh up both sides and reach a supported judgement.
动笔之前，先明确每道题到底要求什么。Eduqas 使用精准的指令词。“Explain”要求给出原因并说明作用机制。“Analyse”意味着拆解并考查影响。“Evaluate”则需要权衡利弊，得出有依据的判断。
For our case study, typical questions might be: (a) Explain one reason why the price of coffee has risen. (2 marks); (b) Analyse the impact of higher coffee costs on a coffee shop’s revenue. (6 marks); (c) Evaluate whether a government subsidy is the best way to help coffee farmers. (8 marks).
针对我们的案例，常见问题可能是：(a) 解释咖啡涨价的一个原因（2分）；(b) 分析咖啡成本上升对咖啡店收入的影响（6分）；(c) 评价政府补贴是否是帮助咖啡种植者的最佳方式（8分）。
4. Question (a): Explain – Supply and Demand in Action | 问题(a)：解释——供需的实际作用
For 2 marks, you need one clear reason linked directly to the extract. Do not simply describe the data; explain the mechanism. A model answer might read: ‘Brazil’s drought has reduced the global supply of coffee beans. With supply falling and demand rising, there is a shortage at the old price, forcing the equilibrium price up. This is shown by a leftward shift of the supply curve.’
2分题需要一个明确且与摘要直接挂钩的理由。不要只描述数据，要解释机制。模版答案可以是：“巴西干旱减少了全球咖啡豆的供给。供给下降而需求上升，在原有价格下出现短缺，推动均衡价格上升。这在图上表现为供给曲线左移。”
Always use a diagram if the question allows – even if not explicitly asked, a well-labelled supply and demand graph earns marks. Label axes (Price, Quantity), draw an upward-sloping supply curve S1, shift it left to S2, and show the new higher price P2.
只要题目允许，一定要画图——即使题目没明确要求，标注清晰的供需图也能得分。标注坐标轴（价格、数量），画出上斜的供给曲线S1，将其左移至S2，并标出更高的新价格P2。
5. Question (b): Analyse – Revenue and Price Elasticity | 问题(b)：分析——收入与价格弹性
Here you must break the impact into parts and show how context affects the outcome. A 6-mark analysis requires chained reasoning. Key point: the effect on a coffee shop’s revenue depends on price elasticity of demand (PED) for its coffee. The extract mentions some shops absorb costs, implying they expect elastic demand – raising price would cause quantity demanded to fall proportionally more, reducing total revenue. Others pass costs on, suggesting they believe demand is inelastic.
此题需要把影响拆开，并展示情境如何影响结果。6分的分析需要环环相扣的逻辑链。关键点：对咖啡店收入的影响取决于其咖啡的需求价格弹性（PED）。摘要提到有的店吸收成本，暗示他们认为需求弹性大——涨价会导致需求量比例下降更多，总收入减少。另一些店转嫁成本，说明他们相信需求缺乏弹性。
Structure your answer: Define PED. Explain that if demand is elastic, a price rise lowers revenue. Relate to the shop absorbing costs – they keep price low to protect sales volume. Then show the opposite for inelastic demand – shops raising price see revenue rise despite a small drop in sales. Use a simple numerical example: if price rises 20% and demand is elastic (PED = –1.5), quantity falls 30%, revenue declines.
答案结构：定义PED。解释若需求弹性大，涨价会降低收入。关联到吸收成本的店家——他们保持低价以保护销量。再展示相反情况：需求缺乏弹性时，涨价的店铺尽管销量略降，收入却上升。用简单数字举例：价格涨20%，需求弹性为–1.5，数量降30%，收入下降。
6. Using Diagrams to Boost Analysis Marks | 用图表提升分析分数
Diagrams are not optional for high marks. For the revenue analysis, draw two demand-side graphs: one showing a steep (inelastic) demand curve where a price increase leads to a larger revenue area, and another showing a flat (elastic) demand curve where revenue shrinks. Shade the revenue boxes and label P1, P2, Q1, Q2 clearly.
想拿高分，图表不可少。对收入分析，画两张需求侧图：一张陡峭（缺乏弹性）的需求曲线，涨价后收入面积变大；另一张平缓（弹性大）的需求曲线，收入面积缩小。给收入矩形填色，并清晰标注P1、P2、Q1、Q2。
Every diagram must have a title and be referred to in your text. Write: ‘As shown in Figure 1, when demand is inelastic, the revenue gain from the higher price outweighs the revenue lost from the fall in quantity.’ This shows genuine analysis, not just description.
每张图都要有标题，并在文中提到。写道：“如图1所示，当需求缺乏弹性时，涨价带来的收入增加大于销量下降造成的收入损失。”这展示的是真正的分析，而非单纯描述。
7. Question (c): Evaluate – Government Subsidy vs Alternatives | 问题(c)：评价——政府补贴与其他方案对比
The 8-mark evaluation is where candidates separate themselves. Start with a clear decision: the subsidy is one option, but not automatically the best. Define what a subsidy is, then immediately identify the pros and cons. Benefits: stabilises farmer incomes, encourages continued production, prevents larger future price spikes. Drawbacks: costs taxpayers, may distort market signals, could be slow to implement.
8分评价题是拉开差距的地方。开头明确判断：补贴是一种选择，但不一定最佳。定义补贴，然后立即识别优缺点。好处：稳定农民收入，鼓励持续生产，防止未来价格进一步飙升。弊端：花费纳税人资金，可能扭曲市场信号，实施可能缓慢。
Now consider alternatives. For instance, releasing strategic coffee reserves (if available), negotiating trade deals to diversify supply sources, or investing in drought-resistant coffee plants. For each, briefly weigh effectiveness versus the subsidy. A strong evaluation uses economic language: opportunity cost, government failure, long-run vs short-run.
再考虑替代方案。例如释放战略咖啡储备（如有），谈判贸易协议以多元化供应来源，或投资抗旱咖啡植株。每个方案简明权衡其与补贴的有效性。强有力的评价使用经济语言：机会成本、政府失灵、长期与短期。
8. Building a Evaluative Paragraph – WEESTEPS Structure | 构建评价段落——WEESTEPS 结构
To keep your evaluation focused, use a simple framework. You don’t need to memorise a mnemonic, but breaking your paragraph into logical steps helps: (1) Weigh the strongest argument for the subsidy; (2) Explain a significant weakness; (3) Examine an alternative policy; (4) Show why context matters (e.g. urgency of the drought); (5) Time horizon – short-run vs long-run; (6) Evidence from the case; (7) Prioritise and conclude; (8) Synthesis – how this links back to the economic problem.
为使评价聚焦，可用简单框架。不必死记助记符，但把段落拆成逻辑步骤会有帮助：(1) 权衡补贴最有利的论点；(2) 解释一个重大缺点；(3) 检验替代政策；(4) 展示情境为何重要（如干旱的紧迫性）；(5) 时间维度——短期与长期；(6) 案例中的证据；(7) 排序并下结论；(8) 综合——如何回归经济问题。
A worked example: ‘A subsidy provides immediate income support for farmers (strength). However, it does not solve the underlying problem of climate vulnerability (weakness). Investment in drought-resistant crops could be more sustainable long-term, though it takes years to develop (alternative + time). Given the current price spike, a temporary subsidy combined with long-term investment may be the most balanced approach (judgement).’
一个实操例子：“补贴为咖啡农提供即时收入支持（优点）。然而，它无法解决气候脆弱性这一根本问题（缺点）。投资抗旱作物从长期看更具可持续性，但需要多年研发（替代方案+时间）。鉴于当前价格飙升，临时补贴结合长期投资可能是最平衡的路径（判断）。”
9. Common Pitfalls in Eduqas Case Studies | Eduqas 案例题常见失误
Top students lose marks by ignoring the extract. Never write a generic essay about supply and demand; you must quote figures, reference the specific country (Brazil), and mention ‘drought’ and ‘premium coffee’. Application means weaving the case facts into every paragraph.
高分学生常因忽略摘要而失分。绝不要写一篇关于供需的泛泛而谈；你必须引用数据，提及具体国家（巴西），说到“干旱”和“高端咖啡”。应用意味着把案例事实织入每一段。
Another trap is imbalance. If a question says ‘evaluate’, you must present both sides. A one-sided answer is capped at low marks. Also, avoid unsupported assertions. Instead of ‘the subsidy is bad’, say ‘the subsidy incurs an opportunity cost because the government could use those funds for drought research, which addresses the root cause.’
另一个陷阱是失衡。如果问题要求“评价”，必须呈现正反两面。只写一面的答案得分上限很低。此外，避免无支撑的断言。不说“补贴不好”，而说“补贴产生机会成本，因为政府本可将资金用于干旱研究，从而处理根本原因”。
10. Time Management During the Exam | 考试时间管理
You have roughly 30–35 minutes for the case study section in Component 2. Allocate time proportionally to marks: 2–3 minutes for a 2-mark question, 8–10 minutes for a 6-mark analysis, and 12–15 minutes for an 8-mark evaluation. Spend the first 5 minutes reading the extract and annotating key points.
在第二单元的案例分析部分，你大约有30–35分钟。按分值分配时间：2分题2–3分钟，6分分析题8–10分钟，8分评价题12–15分钟。前5分钟用于阅读摘要并标注关键点。
Plan the evaluation answer before writing. A quick list of bullet points on the question paper will keep you on track. Leave 2 minutes at the end to check you have used the extract, drawn diagrams, and answered all parts of the question.
动笔前先规划评价题答案。在试卷上快速列出要点，能保你思路不乱。最后留2分钟检查你是否引用了摘要、画了图，是否回答了问题的所有部分。
11. Mark Scheme Insights – What Examiners Reward | 评分标准揭秘——考官给分点
Examiners look for ‘chains of reasoning’ – linking cause to effect step by step. For analysis, you need two or more linked points. For evaluation, you must provide a ‘substantiated judgement’ that weighs evidence. Simply listing pros and cons is not enough; you must conclude which factor is most important and why.
考官寻找“推理链条”——一步步把原因与结果连接起来。分析题需要两个或更多关联点。评价题则必须提供“有证据支撑的判断”，权衡证据。仅仅罗列优缺点不够，必须判断哪个因素最重要及其理由。
Terms like ‘therefore’, ‘this leads to’, ‘as a consequence’, and ‘however’ signal logical flow. Use precise economics vocabulary: market equilibrium, disequilibrium, price mechanism, externalities, government intervention, market failure. These show deeper understanding.
“因此”、“这导致”、“其结果是”、“然而”等词标志着逻辑流动。使用精准的经济词汇：市场均衡、非均衡、价格机制、外部性、政府干预、市场失灵。这些显示更深的理解。
12. Final Practice Task – Your Turn | 最终练习任务——轮到你了
Now apply the techniques to a fresh scenario. Imagine the UK government raises the minimum wage for workers aged 21+ by 10%. A case study describes a local fast-food restaurant that relies heavily on young workers. The owner fears higher costs and is considering raising prices or reducing staff hours. Answer these questions: (a) Explain one opportunity cost of raising prices for the restaurant. (2 marks); (b) Analyse how the minimum wage increase might affect employment at the restaurant. (6 marks); (c) Evaluate whether raising prices is the best response for the restaurant. (8 marks).
现在把这些技巧用到一个新场景。设想英国政府将21岁以上工人的最低工资提高10%。案例描述了一家严重依赖年轻员工的本地快餐店。店主担心成本上升，正考虑涨价或减少员工工时。回答下列问题：(a) 解释该餐馆涨价的一个机会成本（2分）；(b) 分析最低工资上调可能如何影响该餐馆的就业（6分）；(c) 评价涨价是否为该餐馆的最佳应对（8分）。
Use the framework above, draw a labour market diagram for part (b) showing a price floor (minimum wage) above equilibrium, and for part (c) discuss elasticity of demand for fast food, the nature of the product, competition, and the alternative of reducing hours. This practice will cement your skills.
运用上述框架，为(b)题画一个劳动市场图，显示高于均衡的最低工资（价格下限），为(c)题讨论快餐的需求弹性、产品性质、竞争以及减少工时的替代方案。这样的练习将固巩你的技能。
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