📚 IGCSE WJEC Law: Key Principles Quick Reference Guide | IGCSE WJEC 法律：公式定理速查手册
This comprehensive quick reference guide covers the essential legal principles, doctrines and ‘memory formulas’ needed for the WJEC IGCSE Law specification. While law does not have mathematical formulas, it does have reusable structures such as IRAC for problem solving, key tests (e.g. the neighbour principle), and statutory rules of interpretation that function like formulas. This guide is designed to help you revise quickly and effectively.
这份全面的速查手册涵盖了 WJEC IGCSE 法律课程所需的核心法律原则、学说和’记忆公式’。法律虽然没有数学公式，但拥有可重复使用的思维结构，例如问题解决的 IRAC 方法、重要的检验标准（如邻人原则）以及类似公式运用的法令解释规则。本指南旨在帮助你快速高效地复习。
1. Sources of Law | 法律渊源
English law derives from two main sources: statute law (Acts of Parliament) and common law (judge‑made law through precedent).
英国法律源于两大渊源：成文法（议会法案）和普通法（通过先例形成的法官造法）。
Statute law is the supreme form of law; Parliament is sovereign. A statute can override any existing common law rule.
成文法是最高形式的法律；议会具有主权地位。一项成文法可以推翻任何现有的普通法规则。
Common law develops through the decisions of judges in cases. The doctrine of stare decisis ensures consistency.
普通法通过法官在案件中的判决而不断发展。遵循先例原则确保了法律的一致性。
2. Doctrine of Precedent | 先例原则
The binding part of a previous judgment is the ratio decidendi – the legal reasoning necessary for the decision. This is the ‘formula’ that lower courts must apply.
先前判决中具有约束力的部分是判决理由（ratio decidendi）——即作出裁决所必需的法律推理。这是下级法院必须适用的’公式’。
Other remarks, not essential to the decision, are obiter dicta. They are persuasive but not binding.
其他并非裁决所必需的论述称为附带意见（obiter dicta）。它仅具说服力，不具约束力。
The hierarchy of courts determines which precedents are binding. For example, the Supreme Court binds all lower courts; the Court of Appeal binds itself and lower courts.
法院的等级决定了何为先例具有约束力。例如，最高法院约束所有下级法院；上诉法院约束其自身及下级法院。
3. Statutory Interpretation Rules | 法令解释规则
Judges use four main ‘rules of interpretation’ when applying statutes: the literal rule, the golden rule, the mischief rule and the purposive approach.
法官在适用成文法时运用四种主要的’解释规则’：文义规则、黄金规则、弊端规则和目的解释法。
The literal rule: words are given their ordinary, plain meaning. This is the starting point. (e.g. Fisher v Bell – a flick knife displayed in a shop window was not an ‘offer for sale’ under the literal wording.)
文义规则：词语给予其通常的、平义。这是解释的起点。（例如 Fisher v Bell 案——商店橱窗展示的弹簧刀根据文义不属于’要约出售’。）
The golden rule: if the literal meaning leads to absurdity, the court may choose an alternative reasonable meaning. (e.g. Re Sigsworth – a son who murdered his mother could not inherit her estate; literal rule would allow it, so golden rule applied to avoid absurdity.)
黄金规则：若文义导致荒谬结果，法院可采用另一合理含义。（例如 Re Sigsworth 案——谋杀母亲的儿子不能继承其遗产；文义规则本允许继承，适用黄金规则避免了荒谬。）
The mischief rule: focuses on what defect in the common law the statute was intended to remedy. (e.g. Smith v Hughes – the statute aimed to stop soliciting in streets; prostitutes tapping on a window ‘solicited’ within the mischief, even if not literally in the street.)
弊端规则：关注成文法旨在弥补的普通法缺陷。（例如 Smith v Hughes 案——该法旨在禁止街头拉客；妓女敲击窗户的行为属于该弊端范畴，即使文义上不在’街上’。）
The purposive approach: gives effect to Parliament’s broader purpose, often used for EU‑derived legislation. (e.g. Pepper v Hart allowed use of Hansard to discover purpose.)
目的解释法：实现议会的更广泛目的，常用于源于欧盟的立法。（例如 Pepper v Hart 案允许参考议会辩论记录以确定立法目的。）
4. Elements of a Crime: Actus Reus and Mens Rea | 犯罪要素：犯罪行为与犯罪意图
Every criminal offence (unless strict liability) requires two basic ‘building blocks’: actus reus (the guilty act) and mens rea (the guilty mind).
所有刑事犯罪（严格责任犯罪除外）都需要两个基本’构成要素’：犯罪行为（actus reus）和犯罪意图（mens rea）。
Actus reus includes conduct, consequences, and circumstances. It can be an act or, in some cases, an omission where a duty to act exists.
犯罪行为包括行为、结果和情境。它可以是作为，在某些情况下，如果存在作为义务，不作为也可构成。
Mens rea varies by crime: intention (direct or oblique), recklessness (subjective: Cunningham recklessness – the defendant foresaw a risk and unreasonably took it), or negligence.
犯罪意图因犯罪类型而异：故意（直接或间接）、轻率（主观标准：Cunningham 轻率——被告预见到风险却无理地冒险），或过失。
The ‘formula’ for a crime: Actus Reus + Mens Rea + (no valid defence) = Guilt.
犯罪的’公式’：犯罪行为 + 犯罪意图 + （无有效辩护）= 有罪。
5. Non‑Fatal Offences Against the Person | 侵犯人身罪
The Offences Against the Person Act 1861 sets out assault, battery, actual bodily harm (s.47), grievous bodily harm (s.20 and s.18).
《1861年侵犯人身罪法》规定了威胁、殴打、实际身体伤害（第47条）、严重身体伤害（第20条和第18条）。
Assault: intentionally or recklessly causing the victim to apprehend immediate unlawful force. No physical contact required.
威胁：故意或轻率地使受害者担心即将遭受非法暴力。不需要实际身体接触。
Battery: intentional or reckless application of unlawful force on another. The slightest touch can count.
殴打：故意或轻率地对他人施加非法暴力。最轻微的触碰都可构成。
ABH (s.47): assault or battery occasioning actual bodily harm. ‘Harm’ includes psychiatric injury but not mere emotions.
实际身体伤害（第47条）：威胁或殴打造成实际身体伤害。’伤害’包括精神伤害，但不仅是情绪波动。
GBH (s.20): malicious wounding or inflicting GBH. Mens rea: some foresight of some harm, however slight.
严重身体伤害（第20条）：恶意伤害或造成严重身体伤害。犯罪意图：预见到某种伤害，即使是轻微的。
GBH (s.18): wounding or causing GBH with intent to cause GBH or resist arrest. Much more serious, carries life imprisonment.
严重身体伤害（第18条）：意图造成严重身体伤害或抗拒逮捕而伤害或造成严重身体伤害。更为严重，可判终身监禁。
6. Tort of Negligence: The Neighbour ‘Formula’ | 侵权法的过失：邻人’公式’
Negligence requires a duty of care, breach of that duty, and damage caused by that breach which is not too remote.
过失侵权要求存在注意义务、违反该义务、且该违反行为造成的损害不能过于遥远。
The ‘neighbour principle’ from Donoghue v Stevenson: you must take reasonable care to avoid acts or omissions which you can reasonably foresee would be likely to injure your ‘neighbour’ – persons so closely and directly affected by your act.
源自 Donoghue v Stevenson 案的’邻人原则’：你必须采取合理注意，避免那些你可以合理预见到可能会伤害’邻人’的行为或不作为——即那些与你行为有紧密和直接影响的人。
The Caparo three‑part test now governs duty of care: (1) foreseeability of damage, (2) proximity between the parties, (3) it must be fair, just and reasonable to impose a duty.
Caparo 三部分测试现今决定注意义务：（1）损害的可预见性，（2）当事人之间的邻近性，（3）施加义务必须公平、正当和合理。
Breach of duty: the standard is that of a ‘reasonable person’. Special standards apply for professionals (Bolam test – would a responsible body of professional opinion support the action?).
义务违反：标准是’合理人’的标准。对专业人士适用特殊标准（Bolam 测试——一个负责任的专业团体是否会支持该行为？）。
7. IRAC Method: Problem Solving Formula | IRAC 方法：问题解决公式
For legal scenario questions, use the IRAC structure: Issue, Rule, Application, Conclusion.
对于法律情景题，使用 IRAC 结构：问题（Issue），规则（Rule），应用（Application），结论（Conclusion）。
Issue: identify the legal question(s) – who is suing whom, for what, and any possible defence.
问题：识别法律问题——谁起诉谁，为何起诉，以及任何可能的辩护。
Rule: state the relevant legal principle (statute, case ratio, test). Cite the authority.
规则：陈述相关的法律原则（成文法、案例判决理由、检验标准）。引用权威来源。
Application: apply the rule to the facts of the scenario. This is the most important part – mirror the language of the rule. Discuss both sides.
应用：将规则应用到情景事实中。这是最重要的部分——使用规则的语言。讨论双方论点。
Conclusion: give a brief, reasoned outcome. Even if tentative, a clear conclusion is needed.
结论：给出简短、有理据的结果。即使具有试探性，也需要一个清晰的结论。
8. Contract Law Essentials | 合同法要素
A valid contract requires: offer, acceptance, consideration, intention to create legal relations, and capacity.
有效合同需要：要约、承诺、对价、建立法律关系的意图和能力。
Offer: a definite promise to be bound on specified terms. Distinguished from an invitation to treat (e.g. goods on display: Fisher v Bell; Pharmaceutical Society v Boots).
要约：确定性承诺，愿意受特定条款约束。与邀请要约相区别（例如商品展示：Fisher v Bell案；Pharmaceutical Society v Boots 案）。
Acceptance: unconditional agreement to all terms of the offer. Must be communicated (postal rule: acceptance by post is effective at the moment of posting).
承诺：对要约所有条款的无条件同意。必须传达（邮政规则：邮寄承诺在投递时刻即生效）。
Consideration: something of value exchanged; must be sufficient but not necessarily adequate. Past consideration is generally not good consideration.
对价：交换的有价值之物；必须充分但不一定对等。过去的对价通常不构成有效对价。
Intention: domestic agreements are presumed not to be legally binding; commercial agreements are presumed to be binding.
意图：家庭协议推定不具有法律约束力；商业协议推定具有约束力。
9. Human Rights Quick Reference | 人权法速查
The Human Rights Act 1998 incorporates the European Convention on Human Rights into UK law. It does not allow courts to strike down statutes but permits declarations of incompatibility.
《1998年人权法》将《欧洲人权公约》纳入英国法律体系。它不允许法院推翻成文法，但允许做出不一致宣告。
Key Articles: Art.2 right to life; Art.3 prohibition of torture; Art.5 liberty; Art.6 fair trial; Art.8 private and family life; Art.10 freedom of expression; Art.11 assembly and association.
关键条款：第2条生命权；第3条禁止酷刑；第5条自由权；第6条公正审判权；第8条私人和家庭生活权；第10条言论自由；第11条集会结社自由。
Qualified rights (e.g. Art.8, 10, 11) can be restricted if the restriction is prescribed by law, necessary in a democratic society, and pursues a legitimate aim.
有限权利（如第8、10、11条）可被限制，条件是限制有法律规定、为民主社会所必需，并追求合法目的。
Courts must interpret legislation compatibly with Convention rights ‘so far as it is possible to do so’ (s.3 HRA).
法院必须’在尽可能的范围内’以符合公约权利的方式解释立法（《人权法》第3条）。
10. Key Case Quick Finder | 关键判例速查表
| Case Name 案例名称 | Area 领域 | Principle / Ratio 原则/判决理由 |
|---|---|---|
| Donoghue v Stevenson (1932) | Negligence 过失侵权 | Neighbour principle; manufacturer owes duty to ultimate consumer. |
| Caparo Industries v Dickman (1990) | Negligence 过失侵权 | Three‑part test for duty of care. |
| Fisher v Bell (1960) | Criminal / Contract 刑法/合同法 | Display of goods is invitation to treat, not offer. |
| Smith v Hughes (1960) | Statutory Interpretation 法令解释 | Mischief rule used to interpret ‘soliciting in a street’. |
| R v Cunningham (1957) | Criminal Law 刑法 | Subjective recklessness: defendant foresees risk and goes ahead. |
| R v R (1991) | Criminal Law 刑法 | Marital rape is a crime; husband cannot be immune. |
| Pepper v Hart (1993) | Statutory Interpretation 法令解释 | Hansard may be used to discover Parliament’s intention under purposive approach. |
| Carlill v Carbolic Smoke Ball (1893) | Contract 合同法 | Unilateral offer can be accepted by performance; advertisement was an offer. |
11. Legal Terminology ‘Formulas’ | 法律术语’公式’
Use these short definitions as memory triggers:
使用这些简短定义作为记忆触发器：
Obiter dicta – ‘things said by the way’; non‑binding judicial comment.
附带意见 – ‘顺便说的事’；不具约束力的法官评论。
Ratio decidendi – ‘the reason for the decision’; binding part of judgment.
判决理由 – ‘判决的原因’；判决中具有约束力的部分。
Stare decisis – ‘to stand by things decided’; the court follows precedents.
遵循先例 – ‘遵守已决定的事’；法院遵循先例。
Ultra vires – ‘beyond the powers’; a public body acted outside its legal authority.
越权 – ‘超出权力范围’；公共机构越出其法律权限行事。
Novus actus interveniens – an intervening act that breaks the chain of causation.
新介入行为 – 打断因果关系链的介入行为。
12. Revision Strategy: Using the ‘Formulas’ | 复习策略：运用’公式’
Treat the doctrines and tests as reusable templates. For any problem question, first identify the relevant ‘recipe’ (e.g. negligence: duty, breach, damage; crime: AR + MR). Then plug in the facts.
将学说和检验视为可重复使用的模板。对于任何问题型题目，首先确定相关的’配方’（例如过失：义务、违反、损害；犯罪：犯罪行为 + 犯罪意图）。然后代入事实。
For essay questions, structure answers using the PEEEL method: Point, Evidence, Explanation, Evaluate, Link back. Always have a clear introduction and conclusion.
对于作文型题目，使用 PEEEL 结构组织答案：观点（Point），证据（Evidence），解释（Explanation），评价（Evaluate），回扣主题（Link）。始终要有清晰的引言和结论。
Practise past‑paper questions regularly and self‑mark using the mark scheme. Time management is crucial – allocate minutes proportionally to marks.
定期练习历年真题，并按照评分方案自我批改。时间管理至关重要——按分值比例分配时间。
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