📚 Year 12 WJEC Law: Case Analysis Practical Exercises | Year 12 WJEC 法律：案例分析实战演练
Case analysis lies at the heart of success in WJEC Year 12 Law. Whether you are tackling a problem question in criminal law, tort or contract, the examiner is looking for your ability to identify legal issues, state the relevant rules of law – including key cases and statutes – apply those rules to the given facts, and arrive at a reasoned conclusion. This structured approach turns a narrative scenario into a high‑scoring legal argument.
案例分析是 WJEC 12 年级法律取得高分的关键。无论你面对的是刑法、侵权法还是合同法的情景题，考官都在考察你识别法律问题、陈述相关法律规则（包括关键判例和法条）、将规则适用于给定事实并得出有说服力的结论的能力。这种结构化的方法能把一段故事转化为高分法律论证。
1. Why Case Analysis Matters in WJEC Law | 为什么案例分析对 WJEC 法律考试至关重要
In AS Law, problem questions typically carry a large proportion of the marks. For example, in Unit 2 (Criminal Law or Tort) and Unit 3 (Contract Law) assessments, you may be presented with a scenario involving several characters and events. Your task is not simply to say who is guilty or liable; it is to show the examiner how a lawyer thinks – by moving logically from issue to rule, to application, and to conclusion.
在 AS 法律中，情景题通常占很大分值。例如，在单元二（刑法或侵权法）和单元三（合同法）的考核中，试卷可能给出一个包含多名人物和若干事件的情景。你的任务不仅仅是说出谁有罪或谁该担责，而是向考官展示法律人是如何思考的——从问题到规则，再到适用，最后到结论，步步为营。
WJEC mark schemes reward accurate identification of the legal issue, precise citation of authority (case names and statutory sections), and a detailed application that uses the facts of the scenario to illustrate every element of the offence or tort. Generic answers that merely recite the law without linking it to the scenario will fail to reach the higher mark bands.
WJEC 评分方案会奖励准确的问题识别、精确的法律依据引用（判例名称和法条编号），以及能够使用情景事实逐一说明犯罪或侵权要件的详细适用过程。仅仅背诵法律规则而不将其与情景链接的泛泛之答，无法获得高分档。
2. Mastering the IRAC Method | 掌握 IRAC 方法
IRAC stands for Issue, Rule, Application and Conclusion. This is the universal framework for answering problem questions in law. Follow these steps every time you analyse a scenario, and your answer will automatically gain structure and clarity.
IRAC 代表 Issue（问题）、Rule（规则）、Application（适用）和 Conclusion（结论）。这是解答法律情景题的通用框架。每次分析情景时都遵循这些步骤，你的答案就会自然获得结构和清晰度。
| Step | What you do | Chinese |
| Issue | Identify the precise legal question raised by the facts, e.g. ‘Has Dan committed an assault on Eve?’ | 识别事实所引发的具体法律问题，例如：“Dan 对 Eve 的行为是否构成普通袭击？” |
| Rule | State the relevant legal principle, including case law and statutory sections, e.g. ‘Assault is an act causing the victim to apprehend immediate unlawful force (Smith v Chief Superintendent, Woking Police).’ | 陈述相关法律原则，包括判例和法条，例如：“袭击是使受害人担忧即将遭受非法武力的行为（Smith v Chief Superintendent, Woking Police）。” |
| Application | Apply the rule to the facts of the scenario, pointing out similarities to or differences from decided cases. | 将规则适用于情景事实，指出与已决判例的相似点或不同点。 |
| Conclusion | Give a clear, if tentative, conclusion on the likely outcome in court. | 就法院的可能判决给出明确、尽管可以带有保留的结论。 |
In an exam you will often have multiple issues to address. Use IRAC for each one. Begin a new IRAC cycle when the potential offence or defendant changes.
在考试中你往往需要处理多个问题。对每一个问题都使用 IRAC。当潜在的罪名或被告发生变化时，就开启一轮新的 IRAC。
3. Criminal Law Exercise: The Party Scuffle | 刑法练习：聚会打斗
Scenario: At a house party, Alex becomes angry when he sees Ben talking to his girlfriend. Alex shouts, ‘I’m going to break your nose!’ and walks quickly towards Ben with his fist raised. Ben steps back and trips over a chair, hitting his head on the floor and sustaining a cut. Meanwhile, Chloe, who is standing nearby, mistakenly thinks Ben is about to hit her and throws a glass at Ben; the glass smashes and a shard cuts Ben’s arm. Discuss the criminal liability of Alex and Chloe.
情景：在一次家庭聚会上，Alex 看到 Ben 与自己的女友聊天，感到愤怒。Alex 大喊：“我要打断你的鼻子！”并举起拳头快步走向 Ben。Ben 后退时被椅子绊倒，头部撞到地板，造成一道伤口。与此同时，站在附近的 Chloe 误以为 Ben 要打她，便朝 Ben 扔了一个玻璃杯；杯子摔碎后一块碎片划伤了 Ben 的手臂。试讨论 Alex 和 Chloe 的刑事责任。
First, tackle Alex’s liability for assault. The rule is that an assault is committed where the defendant intentionally or recklessly causes the victim to apprehend immediate and unlawful personal violence (Fagan v MPC; R v Ireland). Words alone can be an assault if accompanied by a threatening gesture. Alex’s raised fist combined with his threatening words clearly puts Ben in fear of an immediate attack.
首先处理 Alex 的袭击责任。规则是：被告故意或轻率地使受害人担忧即将发生非法的个人暴力即构成袭击（Fagan v MPC; R v Ireland）。如果言语伴随有威胁性的动作，单靠言语也可构成袭击。Alex 举起的拳头加上他的威胁话语，显然使 Ben 担忧即将遭受攻击。
Also consider battery: the application of unlawful force. Here, Alex has not yet touched Ben, so battery is not straightforward. However, Ben’s fall and injury could be linked to Alex’s assault via the ‘thin skull’ rule (R v Roberts). The cut on Ben’s head was caused by Alex’s threatening approach, which made Ben retreat. If the prosecution can show that Alex’s assault was the operating and substantial cause of Ben’s injury, Alex may be liable for ABH (s.47 OAPA 1861) – assault occasioning actual bodily harm. Reference R v Miller: ‘actual bodily harm’ includes any hurt or injury calculated to interfere with the health or comfort of the victim.
同时考虑非法身体接触：即未经同意的武力施加。在此，Alex 尚未触碰 Ben，所以直接的身体接触不成立。但 Ben 的摔倒和受伤可以通过“薄头盖骨”规则与 Alex 的袭击联系起来（R v Roberts）。Ben 头部的伤口是由 Alex 的威胁性靠近导致 Ben 后退所引起的。如果控方能证明 Alex 的袭击是造成 Ben 受伤的实质性原因，Alex 可能要对第 47 条的实际身体伤害（ABH）负责——袭击致实际身体伤害。参考 R v Miller：实际身体伤害包括任何干扰受害人健康或舒适的伤痛。
4. Applying OAPA 1861 to Alex and Chloe | 对 Alex 和 Chloe 适用 1861 年人身犯罪法
Turning to Chloe: she threw a glass and caused a cut. This could be charged as battery, or, if the injury is more than transient, as ABH under s.47. The actus reus is the application of unlawful force. The mens rea for battery is intention or subjective recklessness as to the application of force (R v Venna). Chloe mistakenly believed she was under attack, but self-defence may be available if her mistake was reasonable. Here, Chloe’s error arose because she ‘mistakenly thinks Ben is about to hit her’. The key question is whether a reasonable person in Chloe’s position would have perceived an imminent threat. Use the objective test from R v Owino: the force used must be proportionate in the circumstances as the defendant honestly believed them to be. If Chloe’s mistake was unreasonable, self-defence may fail, but the unreasonableness of the mistake is only evidence that it was not honestly held. The glass throwing would likely be disproportionate force for a perceived push.
转向 Chloe：她扔了一个玻璃杯并造成割伤。这可以指控为普通袭击（非法身体接触），如果伤害超出轻微程度，也可按第 47 条的 ABH 处理。犯罪行为是非法武力施加。普通袭击的犯意是对武力施加的故意或主观轻率（R v Venna）。Chloe 误以为自己受到攻击，但如果她的错误是合理的，可以主张自卫（self-defence）。在这里，Chloe 的错误是因为她“误以为 Ben 要打她”。关键问题是：一个理性人在 Chloe 的处境下是否会感知到迫在眉睫的威胁。适用 R v Owino 的客观检验：所使武力必须与被告真诚相信的情境成比例。如果 Chloe 的错误不合理，自卫可能不成立，但错误的不合理性只是她并未真诚相信该情境的证据。面对一次推搡的感知，用扔玻璃杯的方式明显超出自卫的限度。
Conclusion: Alex is likely liable for assault and for ABH (via the Roberts principle); Chloe is likely guilty of battery/ABH, with self-defence probably unsuccessful. Always note the possibility of alternative verdicts.
结论：Alex 很可能构成袭击和第 47 条的 ABH（通过 Roberts 原则）；Chloe 则很可能构成普通袭击或 ABH，自卫可能不成立。务必注意替代裁决的可能性。
5. Tort Law Scenario: The Slippery Floor | 侵权法情景：湿滑的地板
Scenario: Dev works in a supermarket. While mopping a spillage, he fails to put out a warning sign. Erin, a customer, walks down the aisle while looking at her phone and slips on the wet patch. She breaks her wrist. The supermarket had placed a floor mat at the entrance, but it had become rucked up earlier in the day and an employee had not straightened it. Erin’s friend Frank sees Erin fall and suffers shock, later being diagnosed with a recognised psychiatric illness. Advise Erin and Frank on their potential claims in negligence.
情景：Dev 在一家超市工作。他在拖地清理溢出物时没有放置警示牌。顾客 Erin 一边看手机一边走在过道上，踩到湿滑处滑倒，手腕骨折。超市曾在入口处铺了一张地垫，但早些时候地垫已经卷起，却没有员工将其铺平。Erin 的朋友 Frank 目睹 Erin 摔倒，受到惊吓，后来被诊断出精神疾病。请就 Erin 和 Frank 可能提出的过失索赔提供法律意见。
Negligence requires duty of care, breach, causation and damage. Start with the supermarket’s duty to Erin. Under the Occupiers’ Liability Act 1957, visitors are owed a common duty of care. Also a common law duty exists via the neighbour principle (Donoghue v Stevenson). The supermarket clearly owes Erin a duty as a lawful visitor. The duty has been delegated to Dev, whose failure to use a warning sign is a breach.
过失侵权需要证明注意义务、违反义务、因果关系和损害。先分析超市对 Erin 的注意义务。根据 1957 年占用人责任法，占用人对合法访客负有一般注意义务。同时普通法上的邻人原则（Donoghue v Stevenson）也产生义务。超市作为合法访客的占用人对 Erin 有明显的注意义务。该义务已委托给 Dev，而 Dev 未使用警示牌即构成义务违反。
6. Breach of Duty and the Reasonable Person | 义务违反与理性人标准
The standard is that of the reasonable occupier or employee (Blyth v Birmingham Waterworks). Factors include the likelihood of harm, the seriousness of the potential injury, the cost of precautions and the social utility of the activity. Mopping a floor in a busy supermarket creates a high likelihood that a customer will slip. Warning signs are cheap and easy to deploy, so a reasonable person would have put one out. Thus, breach is easily established. Moreover, the supermarket may be vicariously liable for Dev’s negligence under the principle in Century Insurance Co. v Northern Ireland Road Transport Board.
标准是理性占用人或雇员的标准（Blyth v Birmingham Waterworks）。考量因素包括损害发生的可能性、潜在伤害的严重性、预防措施的成本以及活动的社会效益。在繁忙的超市中拖地，顾客滑倒的可能性很高。警示牌成本低廉且容易放置，因此理性人都会摆出警示牌。如此，违反义务很容易成立。此外，根据 Century Insurance Co. v Northern Ireland Road Transport Board 案的原则，超市可能因 Dev 的过失承担替代责任。
As for causation, the ‘but for’ test (Barnett v Chelsea Hospital) shows that but for the wet floor and missing sign, Erin would not have fallen. However, the defendant may raise contributory negligence because Erin was looking at her phone. Under the Law Reform (Contributory Negligence) Act 1945, damages can be reduced if the claimant failed to take reasonable care for her own safety. A court might deduct 20‑30%.
在因果关系上，根据“若非”检验法（Barnett v Chelsea Hospital），若非地面湿滑又缺少警示牌，Erin 就不会摔倒。但被告可能提出共同过失抗辩，因为 Erin 当时在看手机。根据 1945 年法律改革（共同过失）法，如果原告未对自己的安全尽到合理注意，赔偿金额可被扣减。法院可能扣减 20–30%。
7. Psychiatric Harm: Frank’s Claim | 精神损害：Frank 的索赔
Frank is a secondary victim. To succeed in a claim for psychiatric injury, he must satisfy the control mechanisms from Alcock v Chief Constable of South Yorkshire: (1) a close tie of love and affection with the primary victim (presumed for a friend, but must be shown on facts); (2) proximity in time and space to the accident; (3) perception of the event through his own unaided senses; and (4) the psychiatric injury must be caused by a sudden shocking event. Frank witnessed the fall directly, satisfying proximity. However, the tie of love and affection with a friend is not automatically presumed; it requires evidence. If that is established, a recognised psychiatric illness (here diagnosed) and sudden shock might support a claim. Note the policy limits set by White v Chief Constable of South Yorkshire: the law is reluctant to extend liability to pure psychiatric damage in the absence of physical injury to the claimant.
Frank 是间接受害人。在精神损害索赔中，他必须满足 Alcock v Chief Constable of South Yorkshire 案的控制因素：（1）与主要受害人存在爱与情感的密切关系（对朋友不自动推定，需事实证明）；（2）与事故在时间和空间上的接近；（3）通过自己的未受辅助感官感知事件；（4）精神损害必须由一个突然的令人震惊的事件引起。Frank 直接目睹了摔倒，满足接近性。但与朋友间的爱与情感密切关系不是自动推定的，需要证据。如果该点成立，被确诊的精神疾病加上突发性震惊可以支持索赔。注意 White v Chief Constable of South Yorkshire 案的政策限制：法律不愿将纯精神损害的责任延伸至原告本人未受身体伤害的情况。
8. Contract Law Exercise: The Online Advertisement | 合同法练习：网上广告
Scenario: Gemma places an advert on a local website: ‘iPhone 14 – mint condition – £200 to the first person who texts me before 5pm today.’ Harry texts at 4.55pm saying, ‘I’ll take it for £180.’ Gemma does not reply. At 4.58pm, Ivan texts: ‘I’ll buy it for £200. Will collect tonight.’ Gemma immediately replies, ‘OK.’ Meanwhile, Harry sees that Gemma has not responded and texts again at 5.01pm: ‘Fine, I’ll pay the £200.’ Discuss whether there is a binding contract between Gemma and Harry, or Gemma and Ivan.
情景：Gemma 在本地网站上发布广告：“iPhone 14——几乎全新——售价 200 英镑，售予今天下午 5 点前第一个发短信给我的人。”Harry 于下午 4:55 发短信：“我出 180 英镑买下。”Gemma 未回复。下午 4:58，Ivan 发短信：“我以 200 英镑购买。今晚取货。”Gemma 立刻回复：“好的。”与此同时，Harry 见 Gemma 未回复，于下午 5:01 再次发短信：“好吧，我就付 200 英镑。”请讨论 Gemma 与 Harry 之间，或 Gemma 与 Ivan 之间是否存在有约束力的合同。
An advertisement is generally an invitation to treat, not an offer (Partridge v Crittenden). However, where the advert specifies a clear condition and limits to a definite person (the first person to text), it can amount to a unilateral offer (Carlill v Carbolic Smoke Ball Co.). Here, the advert is likely a unilateral offer: ‘£200 to the first person who texts me before 5pm.’ Harry’s first text at 4.55pm was not an acceptance because it introduced a new term (‘for £180’); it was a counter-offer, which destroys the original offer (Hyde v Wrench). Gemma did not accept the counter-offer, so no contract with Harry arises from that exchange.
一般而言，广告属于要约邀请而非要约（Partridge v Crittenden）。但如果广告明确了条件并限定于特定人（第一个发短信的人），则可能构成单方要约（Carlill v Carbolic Smoke Ball Co.）。本案中，广告很可能是一个单方要约：“200 英镑，售予今天下午 5 点前第一个发短信给我的人。”Harry 下午 4:55 的短信并非承诺，因为它引入了新条款（“180 英镑购买”）；这构成了反要约，消灭了原要约（Hyde v Wrench）。Gemma 没有接受这个反要约，因此该轮互动中与 Harry 不成立合同。
9. Acceptance and Communication in Contract | 合同的承诺与传达
Ivan’s text at 4.58pm states, ‘I’ll buy it for £200. Will collect tonight.’ This mirrors the terms of the offer – it is an unqualified acceptance within the time limit. The postal rule does not apply to text messages; acceptance by instantaneous communication is effective when received (Entores v Miles Far East Corp). Gemma receives the acceptance and replies ‘OK’, confirming the contract. There is clearly offer, acceptance, consideration (£200) and intention to create legal relations (presumed in commercial transactions). Thus, a binding contract was formed with Ivan.
Ivan 下午 4:58 的短信表述：“我以 200 英镑购买。今晚取货。”这完全对应要约条款，是在时限内的无条件承诺。邮寄规则不适用于短信；即时通讯的承诺在收到时生效（Entores v Miles Far East Corp）。Gemma 收到了承诺并回复“好”，确认了合同。显然存在要约、承诺、对价（200 英镑）以及设立法律关系的意图（商业交易中推定存在）。因此，与 Ivan 成立了有约束力的合同。
When Harry texts again at 5.01pm, the offer has already lapsed (after 5pm) and, even if it had not, it was already accepted by Ivan. Harry’s second text is merely another offer or acceptance of a dead offer. So no contract with Harry. This demonstrates the importance of timing and the mirror-image rule.
Harry 在下午 5:01 再次发短信时，要约已经失效（5 点后），而且即使尚未失效，也已被 Ivan 接受。Harry 的第二次短信充其量只是另一个要约或对失效要约的“承诺”。因此与 Harry 无合同成立。这显示了时限和镜像原则的重要性。
10. Using Precedent and Interpretation in Case Analysis | 在案例分析中运用先例和解释
Strong answers do not merely name cases; they draw explicit comparisons between the scenario facts and the material facts of the precedent. For instance, in the party scuffle, you might contrast Alex’s raised fist with the silent phone calls in R v Ireland: both created an apprehension of immediate force, but the gesture makes the apprehension stronger. In the supermarket slip, compare the missing warning sign with the standard of care in Ward v Tesco Stores, where a spillage left unattended amounted to negligence.
高分答案不仅仅是提到案例名称，它们会明确比较情景事实与先例的实质事实。例如，在聚会打斗中，你可以将 Alex 举起的拳头与 R v Ireland 案中沉默的电话进行对比：二者都造成了对即时暴力的担忧，但手势使担忧更为强烈。在超市滑倒中，将缺失的警示牌与 Ward v Tesco Stores 案中的注意标准进行对比：那里的遗漏清理同样构成了过失。
Additionally, statutory interpretation skills are often tested obliquely. When applying s.47 OAPA 1861, you might briefly note how ‘actual bodily harm’ has been interpreted broadly to include psychiatric injury (R v Chan-Fook) but not mere emotions. Showing that you understand how the courts have given meaning to statutory words demonstrates a deeper level of legal reasoning that WJEC examiners reward.
此外，法定解释的技巧经常被间接考查。在适用 1861 年人身犯罪法第 47 条时，可以简要说明“实际身体伤害”如何被广义解释为包括精神伤害（R v Chan-Fook），但不包括单纯的情绪波动。展现出你理解法院如何赋予法条用语以含义，能使你展现出更深层的法律推理能力，这正是 WJEC 考官所看重并奖励的。
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