📚 Year 10 Cambridge IGCSE Business: Case Study Analysis Practice | 案例分析实战演练
In Cambridge IGCSE Business, case study questions are a core part of Paper 1 and Paper 2. They test your ability to apply business concepts to real-world scenarios, analyse data, and make justified decisions rather than simply recall definitions. This article provides a step-by-step guide to mastering case study analysis, with practical worked examples, command word breakdowns, and common pitfalls to avoid.
在剑桥 IGCSE 商务考试中，案例分析题是试卷一和试卷二的核心部分。它考查的不是简单背诵定义，而是把商务概念应用到真实情境、分析数据并做出有依据决策的能力。本文将逐步指导你掌握案例分析技巧，包含实战演算示例、指令词拆解以及常见错误的规避方法。
1. Getting to Know the Case Study Structure | 了解案例分析结构
In Cambridge IGCSE Business, the case study typically occupies one to two pages and introduces a fictional business. It may be a manufacturer, a retailer, or a service provider. Before you even look at the questions, scan the case for the following: business name, type of business ownership (sole trader, partnership, private limited company, public limited company), the industry, the scale of operations, and the main problem or decision the business faces.
在剑桥 IGCSE 商务考试中，案例通常占一至两页，介绍一家虚构的企业。企业可能是制造商、零售商或服务提供商。在你查看问题之前，先快速浏览案例，寻找以下信息：企业名称、所有制类型（个体经营者、合伙、私营有限公司、上市有限公司）、所属行业、经营规模，以及企业面临的主要问题或决策。
Use a highlighter or underline key figures such as sales revenue, profit margins, number of employees, and any financial data provided. Also note the year(s) mentioned - sometimes the case contains historical data and projections. This will save time when you refer back.
使用荧光笔或下划线标出关键数字，如销售收入、利润率、员工人数以及任何提供的财务数据。同时注意提及的年份 - 有时案例同时包含历史数据和预测数据。这样在回看时可以节省大量时间。
A reliable scanning checklist is shown below. Keep it in your head as a fixed routine, so that every case study is read in the same order and nothing is missed.
下面是一份可靠的速读清单。把它当作固定流程记在脑中，这样每次读案例都按同样的顺序进行，不会遗漏信息。
- Who: business name, owner type, location, size (employees, outlets, revenue) | 主体：企业名称、所有制、地点、规模（员工数、门店数、营收）
- What: products or services, market segment, unique selling point | 业务：产品或服务、细分市场、独特卖点
- Problem: the decision or difficulty the business is facing | 问题：企业正面临的决策或困难
- Numbers: costs, prices, output, market share, growth rates | 数字：成本、价格、产量、市场份额、增长率
- Options: the alternatives the business is considering (often A and B) | 选项：企业正在考虑的备选方案（通常是 A 与 B）
Finally, read the questions before reading the case in depth. The questions often guide you to which parts of the case are most relevant. This targeted reading helps you focus and avoid information overload.
最后，在深入阅读案例之前先看问题。问题往往会指引你关注案例中最相关的部分。这种有针对性的阅读有助于你集中注意力，避免信息过载。
2. Identifying the Core Business Issue | 识别核心商业问题
Many students lose marks not because they do not know business theory, but because they answer the wrong question. The core issue is the single underlying problem that all the case data points towards - not the most dramatic symptom.
许多学生失分不是因为不懂商务理论，而是因为答错了问题。核心问题是所有案例数据共同指向的那一个深层问题，而不是最显眼的表面症状。
Consider the difference between a symptom and a cause. Falling sales is a symptom. The cause might be that the business has not invested in product development, so its products now look outdated next to competitors. If you spend your whole answer treating the symptom, you will not reach the higher mark bands.
要注意症状与原因的区别。销售额下降是症状；原因可能是企业未投入产品研发，导致其产品相较竞争对手显得过时。如果你整篇答案都在处理症状，就很难进入高分段。
A practical technique is to write a single framing sentence at the top of your rough work: The core issue is whether [business name] should [option A] or [option B], given that [key piece of evidence]. This forces you to be specific and keeps your answer anchored.
一个实用技巧是在草稿纸顶部写下一句框架句：核心问题在于【企业名称】是否应当【方案 A】还是【方案 B】，鉴于【关键证据】。这会迫使你表述具体，让整篇答案始终围绕重点。
3. Reading the Command Words Correctly | 正确理解指令词
Command words tell you exactly what kind of thinking is required. Misreading them is one of the most common ways to lose easy marks. Learn to match each command word to the depth it demands.
指令词直接决定你需要做何种思考。误读指令词是最常见的丢分方式之一。要学会把每个指令词与它要求的思维深度对应起来。
| Command word | What to do | 中文说明 |
| Define / State | Give a precise meaning or a single fact. One or two lines only. | 给出准确定义或单一事实，一两行即可。 |
| Describe | Say what something is like, using detail from the case. | 描述事物的样貌，引用案例中的细节。 |
| Calculate | Show the working and give the unit. No interpretation required. | 写出计算过程并标明单位，不需要解释。 |
| Explain | Give a reason and show the chain of cause and effect. | 给出原因，并展示因果链条。 |
| Analyse | Break the issue into parts, connect them, and examine impact. | 拆解问题、建立联系并分析影响。 |
| Discuss / Evaluate | Present both sides and reach a supported overall judgement. | 呈现双方观点，并给出有支撑的总体判断。 |
| Recommend / Justify | Choose one option and defend it against the alternative. | 选定一个方案，并针对另一方案进行辩护。 |
Notice that Explain and Analyse are not synonyms. A common error is to define a term, add a reason, and call it analysis. Real analysis links two or more consequences together and explains why the second one follows from the first.
注意，Explain 与 Analyse 并不等同。一个常见错误是：给出定义、补一个理由，就自认为做了分析。真正的分析要把两个或更多结果联系起来，并解释为什么第二个结果由第一个推导而来。
4. Applying Business Concepts, Not Just Recalling Them | 运用商务概念而非单纯背诵
Your knowledge of the syllabus tools - the marketing mix, cash flow forecasting, break-even, motivation theories, sources of finance, and so on - is the raw material. Marks come from applying them to the specific business in front of you.
你对大纲工具的知识 - 营销组合、现金流预测、盈亏平衡、激励理论、融资来源等 - 只是原材料。得分点在于把它们应用到眼前这家具体企业上。
The three-step application pattern works for almost every case study question. First, name the concept. Second, explain how the concept works in general. Third, apply it to the case using the business name and a specific figure or fact. Skipping step three is the classic reason for low marks.
三步应用法几乎适用于每一道案例题。第一步，点明概念；第二步，说明该概念在一般意义上如何运作；第三步，结合企业名称和具体数字或事实，把它落到本案例中。跳过第三步，就是低分的典型原因。
- Weak: A price cut may increase demand. | 薄弱：降价可能会增加需求。
- Strong: If Krunch Snacks cuts its price from $2.50 to $2.00, demand is likely to rise because its target teenage segment is price sensitive, but the contribution per unit falls from $1.00 to $0.50, so sales must more than double to keep the same total contribution. | 有力：如果 Krunch Snacks 将价格从 2.50 美元降至 2.00 美元，由于目标客群青少年对价格敏感，需求可能上升；但单位贡献从 1.00 美元降至 0.50 美元，因此销量必须增长一倍以上才能维持总贡献不变。
5. Using Data and Calculations in Your Answers | 在答案中使用数据与计算
Case studies are full of numbers, and examiners reward candidates who use them. However, simply copying figures is not analysis - you must say what the number means for the business.
案例中充满数字，考官会奖励那些使用数据的考生。然而，只是抄录数字并不构成分析 - 你必须说明这个数字对企业意味着什么。
Three calculations appear again and again at IGCSE level. Make sure you can do each one quickly and without a calculator.
在 IGCSE 阶段，有三种计算反复出现。务必确保自己能快速、不依赖计算器地完成。
Contribution per unit = Selling price − Variable cost per unit
Break-even output = Fixed costs ÷ Contribution per unit
Gross profit margin (%) = (Revenue − Cost of sales) ÷ Revenue × 100
Margin of safety = Actual output − Break-even output
Always show your working, state the unit (units, $, %, or years), and round sensibly. A correct figure with no working may earn fewer marks than a slightly wrong figure with clear method.
务必写出计算过程，标明单位（件、美元、百分比或年），并合理取整。一个正确但无过程的答案，得分可能低于一个略有误差但方法清晰的答案。
Then interpret. For example: a margin of safety of 3 000 units means the business could lose more than a fifth of its sales before making a loss, which suggests the new product launch is reasonably low risk in the short term.
接着进行解读。例如：安全边际为 3 000 件，意味着该企业在陷入亏损前可以承受超过五分之一的销量下滑，这说明新产品上市在短期内风险相对可控。
6. Structuring a Level-Marked Written Answer | 分层评分答案的结构搭建
Longer case study questions are marked with levels rather than one mark per point. Levels reward structure, development, and judgement. A reliable paragraph structure helps you reach the top level consistently.
较长的案例题采用分层评分，而不是一点一分。分层评分看重结构、展开和判断。一个稳定可靠的段落结构能帮助你稳定进入最高档。
- Point: state your argument clearly in one sentence. | 观点：用一句话清楚表明你的论点。
- Evidence: quote a figure or fact from the case. | 证据：引用案例中的数字或事实。
- Explanation: explain the chain of consequences for this specific business. | 解释：说明对该具体企业带来的连锁后果。
- Link: connect back to the question and, where relevant, to the alternative option. | 回扣：回到问题本身，并在相关处与另一备选方案比较。
For a six-mark question, aim for two well-developed paragraphs plus a short justified conclusion. For a nine-mark question, aim for three developed arguments, a counter-argument, and a conclusion that states clearly which option is better and why.
对于 6 分题，目标是两段充分展开的论述加一个简短的有理据结论。对于 9 分题，目标是三个充分展开的论点、一个反方论点，以及一个明确说明哪一方案更优及其原因 的结论。
Do not waste time rewriting the case. The examiner has already read it. Every sentence you write should either add reasoning or add evidence.
不要浪费时间复述案例。考官已经读过案例。你写的每一句话都应当要么增加推理，要么增加证据。
7. Evaluation and Justified Judgement | 评价与有理据的判断
Evaluation is what separates a grade C answer from a grade A answer. Evaluation means weighing up, not simply listing advantages and disadvantages. Strong evaluative writing uses conditional language.
评价是把 C 等级答案与 A 等级答案区分开来的关键。评价意味着权衡，而不仅仅是罗列优缺点。有力的评价写作会使用条件性语言。
- In the short term... but in the long term... | 短期内……但长期来看……
- This depends on whether demand is price elastic. | 这取决于需求是否富有价格弹性。
- The success of this option relies largely on the reliability of the supplier. | 该方案的成功在很大程度上取决于供应商的可靠性。
- On balance, this option is preferable because the financial risk is lower. | 总体权衡之下，该方案更可取，因为财务风险更低。
A judgement must be specific and supported. Saying "it depends" alone earns nothing; saying "it depends on the size of the loan relative to cash flow, and since annual cash flow is only $18 000 against a $60 000 loan, the risk of insolvency is high" earns credit because the reasoning is grounded in the data.
判断必须具体且有支撑。只说"视情况而定"不得分；说"这取决于贷款规模相对于现金流的比例，而年现金流仅 18 000 美元，贷款却达 60 000 美元，因此破产风险较高"，就能得分，因为推理建立在数据之上。
8. Stakeholder and Trade-off Analysis | 利益相关者与权衡分析
Many IGCSE case studies involve a decision that helps one group and harms another. Recognising these trade-offs shows the examiner that you understand business as a set of competing interests.
许多 IGCSE 案例涉及一个决策：它对某一群体有利，却损害另一群体。识别这些权衡，能向考官展示你理解企业是一组相互竞争的利益关系。
| Stakeholder | Typical interest | 中文关注点 |
| Owners / shareholders | Profit, dividends, growth in value | 利润、分红、价值增长 |
| Employees | Job security, pay, working conditions | 工作保障、薪酬、工作条件 |
| Customers | Price, quality, choice, service | 价格、质量、选择、服务 |
| Suppliers | Prompt payment, stable orders | 及时付款、订单稳定 |
| Local community | Employment, environment, noise | 就业、环境、噪音 |
When you discuss a trade-off, always state who gains, who loses, and how much the loss matters relative to the gain. Ordering stakeholders by how strongly they are affected is a simple but effective way to add analysis.
讨论权衡时，务必说明谁受益、谁受损，以及相对于收益而言损失有多重要。按受影响程度对利益相关者排序，是一种简单却有效的分析增强方式。
9. Common Pitfalls and How to Avoid Them | 常见错误及避免方法
Certain mistakes appear in almost every set of mock scripts. Learning to spot them in your own work is faster than learning new content.
几乎每一批模拟考卷中都会出现某些特定错误。学会在自己的作业中发现它们，比学习新内容更快见效。
- Not answering the question asked: writing everything you know about the topic instead of addressing the specific decision. | 答非所问：把你知道的所有相关知识都写上去，却没有回应题目的具体决策。
- Ignoring the case: giving a textbook answer that could apply to any business. | 忽略案例：给出一个可以套用于任何企业的教科书式答案。
- Listing instead of developing: three undeveloped points score less than one fully developed argument. | 罗列而非展开：三个未展开的要点得分低于一个充分展开的论证。
- No conclusion: leaving out the judgement in a Discuss or Evaluate question. | 没有结论：在 Discuss 或 Evaluate 题中缺少判断。
- Arithmetic slips: forgetting units or mixing up total and per-unit figures. | 计算失误：漏写单位，或混淆总额与单位数值。
- Running out of time: spending too long on the first question and rushing the higher-mark one. | 时间不足：第一题耗时过长，导致高分题仓促作答。
A quick self-check before you move on: have I mentioned the business by name, used at least one figure from the case, and explained why the consequence follows?
在继续答题前做一个快速自检：我有没有提到企业名称？有没有使用案例中的至少一个数字？有没有解释为什么会产生这一后果？
10. Timing and Exam Technique | 时间分配与考试技巧
Case study papers are demanding on time. A workable rule is roughly one minute per mark, plus ten minutes for reading the case and planning. That means a question worth nine marks deserves about nine minutes of writing.
案例试卷对时间要求很高。一个可行的规则是：大约每分钟对应一分，另外留出十分钟阅读案例与构思。这意味着 9 分的题大约值得投入 9 分钟作答。
Plan before you write, but keep the plan short - four or five bullet points is enough. Writing without a plan usually produces answers that repeat themselves and drift away from the question.
动笔前先做构思，但要简短 - 四到五个要点就够了。没有构思地写作，通常会产出重复且偏离题目的答案。
- Read the case once quickly, then read the questions. | 先快速通读案例，再读问题。
- Re-read only the sections relevant to each question. | 只重读与当前问题相关的段落。
- Answer the highest-mark question while your mind is fresh, if the paper allows. | 若试卷允许，趁头脑清醒时先作答分值最高的题目。
- Leave two minutes at the end to check units, spelling of key terms, and conclusions. | 结尾留两分钟检查单位、关键术语拼写以及结论是否完整。
11. A Worked Mini Case Study | 迷你案例实战演练
Krunch Snacks Ltd is a small private limited company producing cereal bars. Last year its revenue was $240 000, cost of sales was $150 000, and fixed costs were $48 000. Each bar sells for $6 and has a variable cost of $2. The company currently produces and sells 15 000 bars per year. It is considering a loan of $60 000 to buy an automated production line, which would reduce the variable cost per bar to $1 but add $12 000 per year in interest payments.
Krunch Snacks Ltd 是一家生产谷物棒的小型私营有限公司。去年营收 240 000 美元，销售成本 150 000 美元，固定成本 48 000 美元。每根谷物棒售价 6 美元，单位变动成本 2 美元。公司目前年产销 15 000 根。公司正考虑贷款 60 000 美元购置自动化生产线，这将使单位变动成本降至 1 美元，但每年会增加 12 000 美元利息支出。
First, calculate the current position. Contribution per unit is $6 − $2 = $4. Break-even output is $48 000 ÷ $ units, so the margin of safety is 15 000 − 12 000 = 3 000 units. Gross profit margin is ($240 000 − $150 000) ÷ $240 000 × 100 = 37.5%.
先计算当前状况。单位贡献为 6 − 2 = 4 美元。盈亏平衡产量为 48 000 ÷ 4 = 12 000 根，因此安全边际为 15 000 − 12 000 = 3 000 根。毛利率为（240 000 − 150 000）÷ 240 000 × 100 = 37.5%。
Now evaluate the proposal. New contribution per unit is $6 − $1 = $5. New fixed costs are $48 000 + $12 000 = $60 000. New break-even output is $60 000 ÷ $ - unchanged. However, at the current output of 15 000 bars, total contribution rises from $60 000 to $75 000, while fixed costs rise by $12 000, so profit improves by about $3 000 per year.
现在评估该提案。新的单位贡献为 6 − 1 = 5 美元。新的固定成本为 48 000 + 12 000 = 60 000 美元。新的盈亏平衡产量为 60 000 ÷ 5 = 12 000 根 - 保持不变。然而在现有 15 000 根的产量下，总贡献从 60 000 美元升至 75 000 美元，而固定成本增加 12 000 美元，因此年利润改善约 3 000 美元。
A strong evaluative answer would note that the financial gain is modest, that the loan increases financial risk because fixed costs are now higher, and that break-even output stays the same, so the margin of safety does not improve. Whether the investment is worthwhile depends on whether demand can be increased - if sales rise to 18 000 bars, the extra contribution of $5 per bar makes the loan far more attractive.
一个有力的评价性答案会指出：财务收益有限；由于固定成本提高，贷款增加了财务风险；且盈亏平衡产量不变，安全边际并未改善。该投资是否值得，取决于需求能否提升 - 若销量增至 18 000 根，每根多出 5 美元的贡献会让这笔贷款更具吸引力。
12. Practice Plan for Year 10 Students | 给 Year 10 学生的训练计划
Case study skill is built through repetition, not through reading about it. A steady weekly routine works better than a burst of revision the night before a test.
案例分析能力靠重复训练建立，而不是靠阅读相关文章获得。稳定的每周节奏，比考前一夜突击复习更有效。
- Week 1-2: practise reading cases only, and write the core issue in one sentence. | 第 1-2 周：只练习读案例，并用一句话写出核心问题。
- Week 3-4: complete calculation-only questions and check units every time. | 第 3-4 周：专做计算题，每次检查单位。
- Week 5-6: write full six-mark answers with a plan and a conclusion. | 第 5-6 周：撰写完整的 6 分答案，包含构思和结论。
- Week 7-8: attempt nine-mark questions under timed conditions. | 第 7-8 周：在计时条件下完成 9 分题。
- Ongoing: keep a mistake log listing every command word you misread and every unit you forgot. | 全程：建立错题日志，记录每一个误读的指令词和每一次漏写的单位。
Mark your own work against the level descriptors before asking a teacher. Self-assessment forces you to notice where your explanation stops short, which is exactly the gap that costs marks in the exam.
在请教老师之前，先依据分层评分标准自评。自我评估会迫使你注意到自己的解释在哪里中断 - 而这正是考试中失分的关键缺口。
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