📚 OCR Law Formula & Case Law Quick Reference Handbook | OCR 法律公式与判例速查手册
This handbook is designed to help Year 10 students quickly recall the essential ‘formulas’ and ‘theorems’ (key case law principles) of OCR Law. Instead of memorising long passages, you can think in terms of legal equations, where combining the right elements produces a legal outcome.
本手册旨在帮助10年级学生快速回顾OCR法律的核心“公式”和“定理”（关键判例原则）。你可以用法律等式的方式去思考，而无须死记硬背大段文字——把正确的要素组合起来，就会产生相应的法律结果。
1. The Equation of Legal Sources | 法律渊源等式
Sources of Law = Acts of Parliament (Statute) + Judicial Precedent (Common Law)
法律渊源 = 议会立法（制定法） + 司法先例（普通法）
Primary Source Formula: Legislation + Precedent = Binding Law
主要法源公式: 立法 + 先例 = 具有约束力的法律
An Act of Parliament, also called statute law, is the highest form of law in England and Wales. Only Parliament can make, amend or repeal such legislation.
议会立法又称制定法，是英格兰和威尔士最高位阶的法律。只有议会才能制定、修改或废除这类法律。
Judicial precedent is judge-made law. When a higher court decides a case, its legal reasoning (ratio decidendi) becomes a binding rule for all lower courts in future similar cases.
司法先例是法官创制的法律。当上级法院判决一个案件时，其法律推理（判决理由）将对今后所有下级法院审理的类似案件产生约束力。
The key theorem for precedent is: ‘Like cases must be treated alike,’ underpinned by the practice of stare decisis (stand by decided matters).
先例的核心定理是：“同类案件应当同样对待”，其背后是“遵循先例”（stare decisis）原则。
2. The Criminal Liability Formula | 刑事责任公式
To secure a conviction, the prosecution must prove beyond reasonable doubt that the defendant had both the guilty act and the guilty mind, in the absence of a successful defence.
要成功定罪，控方必须“排除合理怀疑”地证明被告人同时具备有罪的行为和有罪的心理，并且不存在任何有效的辩护。
Criminal Liability = Actus Reus + Mens Rea − Defence
刑事责任 = 犯罪行为 + 犯罪意图 − 辩护
Actus reus can be an act, an omission (in limited circumstances, such as when a duty of care exists, as in R v Stone & Dobinson [1977]) or a state of affairs. It must be voluntary.
犯罪行为可以是作为、不作为（仅在有限情形下，如存在照顾义务，见 R v Stone & Dobinson [1977] 案）或某种状态。行为必须是自愿的。
Mens rea is the mental element: intention (direct or oblique) or recklessness. For example, in R v Cunningham [1957], recklessness was defined as foreseeing a risk and going on to take it unreasonably.
犯罪意图是心理要素：故意（直接或间接）或轻率。例如，在 R v Cunningham [1957] 案中，轻率被定义为预见到风险却仍不合理地采取了该风险。
Some crimes require specific mens rea, while others (such as assault) require intention or recklessness as to the result.
有些犯罪要求特定的故意，而其他犯罪（如企图伤害）则要求对结果具有故意或轻率。
3. The Strict Liability Shortcut | 严格责任捷径
For certain regulatory and social welfare offences, Parliament removes the requirement of mens rea. In these cases, the prosecution only needs to prove the actus reus.
对于某些监管类和社会福利类犯罪，议会取消了犯罪意图的要求。在这类案件中，控方只需证明犯罪行为即可。
Strict Liability = Actus Reus (No Mens Rea Required)
严格责任 = 犯罪行为（无须证明犯罪意图）
The key justification is to protect the public, for instance in food safety or pollution offences. The leading case showing strict liability is Callow v Tillstone (1900), where a butcher was convicted for selling unfit meat even though a vet had negligently certified it as safe.
其主要正当性在于保护公众，例如食品安全或环境污染犯罪。体现严格责任的代表性判例是 Callow v Tillstone (1900)，该案中，屠夫出售了已通过兽医不当认证的不合格肉类仍被判有罪。
Because no defence of ‘due diligence’ is generally permitted under common law strict liability, the formula is unforgiving. However, some statutes create a statutory ‘due diligence’ defence.
由于普通法上的严格责任通常不允许“已尽合理注意义务”抗辩，这个公式显得十分严苛。不过，有些成文法创设了法定的“合理注意”抗辩。
4. Non-Fatal Offences Blueprint | 非致命人身犯罪蓝图
The law on non-fatal offences against the person is structured by the level of harm and the mens rea required. Each offence can be expressed as a combination of elements.
关于非致命人身犯罪的法律是根据伤害程度和所需犯意来构成的。每一项犯罪都可以表达为若干要素的组合。
Assault = Causing Apprehension of Immediate Unlawful Force (Intention or Recklessness)
企图伤害 = 使他方产生对即刻非法暴力的恐惧（故意或轻率）
Battery = Application of Unlawful Physical Force (Intention or Recklessness)
殴打 = 施加非法的物理暴力（故意或轻率）
Assault Occasioning Actual Bodily Harm (ABH) under s.47 OAPA 1861 = Assault or Battery + Causing ‘actual bodily harm’ (which can include psychiatric injury: R v Chan-Fook [1994])
《1861年侵害人身罪法》第47条项下的企图伤害致实际身体伤害 = 企图伤害或殴打 + 造成“实际身体伤害”（可包括精神伤害，见 R v Chan-Fook [1994]）
Malicious Wounding or Inflicting GBH under s.20 = Wounding or GBH + Malice (intention or recklessness as to some harm)
第20条项下的恶意伤害或造成严重身体伤害 = 创伤或严重身体伤害 + 恶意（对某种伤害具有故意或轻率）
Wounding or Causing GBH with Intent under s.18 = Wounding or GBH + Specific Intent to cause serious harm
第18条项下的故意伤害或造成严重身体伤害 = 创伤或严重身体伤害 + 造成严重伤害的特定故意
5. The Negligence Equation | 过失责任等式
A successful claim in the tort of negligence requires the claimant to establish four interlocking elements. Missing any one will defeat the claim.
侵权法上的过失之诉若要胜诉，索赔人必须证明四个环环相扣的要件。缺少任何一个都将导致败诉。
Negligence = Duty of Care + Breach of Duty + Causation + Damage (Not Too Remote)
过失 = 注意义务 + 违反义务 + 因果关系 + 损害（非过于遥远）
The modern duty of care test was given in Caparo Industries plc v Dickman [1990]. The three-stage test requires: (1) reasonable foreseeability of harm, (2) proximity between the parties, and (3) it must be fair, just and reasonable to impose a duty.
现代注意义务的检验标准确立于 Caparo Industries plc v Dickman [1990] 案。三阶段检测要求：(1) 损害须可合理预见，(2) 当事人间须存在足够近因，(3) 课以义务须公平、公正且合理。
Breach occurs when the defendant falls below the standard of the reasonable person, as in Blyth v Birmingham Waterworks (1856). Special standards apply for professionals (Bolam test) and learners (Nettleship v Weston [1971]).
当被告的行为低于合理人的标准时，即构成违反义务，如 Blyth v Birmingham Waterworks (1856) 案。专业人员（博勒姆标准）和学习者（Nettleship v Weston [1971]）适用特别标准。
Causation must be proved in fact (the ‘but for’ test: Barnett v Chelsea & Kensington Hospital [1969]) and in law, meaning the damage must not be too remote (The Wagon Mound (No 1) [1961]).
因果关系须同时证明事实上（“若非”检验：Barnett v Chelsea & Kensington Hospital [1969]）和法律上（损害不能过于遥远：The Wagon Mound (No 1) [1961]）。
6. The Contract Formation Formula | 合同成立公式
For a legally binding contract, four ingredients must converge. Without any one, the agreement is merely a social arrangement or an invitation to treat.
要成立一份具有法律约束力的合同，必须同时具备四个要素。缺少任何一个，合意就只是社交安排或要约邀请。
Contract = Offer + Acceptance + Consideration + Intention to Create Legal Relations
合同 = 要约 + 承诺 + 对价 + 设立法律关系的意图
An offer is a definite promise to be bound on specific terms (Carlill v Carbolic Smoke Ball Co [1893]). It must be distinguished from an invitation to treat (Fisher v Bell [1961] – display of goods is not an offer).
要约是一项以特定条款受约束的确定允诺（Carlill v Carbolic Smoke Ball Co [1893]）。要约必须区别于要约邀请（Fisher v Bell [1961] – 陈列商品不构成要约）。
Acceptance must be unconditional and communicated to the offeror, except where the postal rule applies (Adams v Lindsell [1818]). Silence cannot amount to acceptance (Felthouse v Bindley [1862]).
承诺必须无条件且传达给要约人，除非邮寄规则适用（Adams v Lindsell [1818]）。沉默不构成承诺（Felthouse v Bindley [1862]）。
Consideration is the ‘price of the promise’, and it must move from the promisee but need not be adequate (Thomas v Thomas [1842]). Past consideration is not good consideration (Re McArdle [1951]).
对价是“允诺的价格”，必须由受诺人提供但无须对等（Thomas v Thomas [1842]）。过往对价不是有效的对价（Re McArdle [1951]）。
Intention to create legal relations is presumed in commercial agreements (Edwards v Skyways [1964]) but not in domestic/social agreements (Balfour v Balfour [1919]), unless the contrary is shown.
设立法律关系的意图在商业协议中被推定存在（Edwards v Skyways [1964]），但在家庭/社交协议中通常不存在（Balfour v Balfour [1919]），除非有相反证据。
7. The Consideration Principle | 对价原则定理
Even though consideration need not be adequate, certain refined rules apply to make a promise enforceable. These are best remembered as ‘mini-theorems’ of contract law.
虽然对价无须与允诺严格对等，但为使允诺可强制执行，还须符合若干精要规则。这些最好被当作合同法的“小型定理”来记忆。
Valid Consideration = Something of Value in the Eyes of the Law, Moving from the Promisee
有效对价 = 法律视野下具有某种价值且由受诺人提供之物
A promise to perform an existing public duty is generally not good consideration (Collins v Godefroy [1831]), unless something extra is done (Glasbrook Bros v Glamorgan CC [1925]).
履行现有公共义务的允诺一般不构成有效对价（Collins v Godefroy [1831]），除非提供了额外内容（Glasbrook Bros v Glamorgan CC [1925]）。
Part payment of a debt cannot extinguish the whole debt under the rule in Pinnel’s Case (1602), unless there is fresh consideration or the doctrine of promissory estoppel applies (Central London Property Trust v High Trees House [1947]).
根据平内尔案规则，部分偿还一笔债务不能消灭整笔债务，除非有新的对价或适用允诺禁反言原则（Central London Property Trust v High Trees House [1947]）。
Therefore, the ‘sufficiency but not adequacy’ rule means that a peppercorn rent can be good consideration, provided it is not a sham.
因此，“充分但不必对等”规则意味着，即便仅是象征性租金，只要并非虚假，也可构成有效对价。
8. Contractual Terms Theorem | 合同条款定理
Once a contract is formed, the terms determine the rights and obligations of the parties. Different types of term carry different remedies upon breach.
合同一旦成立，条款即决定双方的权利义务。不同类型的条款在发生违约时会导致不同的救济。
Remedy Depends on Classification: Condition → Repudiation + Damages; Warranty → Damages Only
救济取决于分类：条件条款 → 解除合同 + 赔偿；保证条款 → 仅损害赔偿
A condition is a term so fundamental that its breach entitles the innocent party to treat the contract as discharged. For example, in Poussard v Spiers (1876), an actress who missed opening night was in breach of a condition.
条件条款是如此根本性的条款，违反它使得无过错方有权解除合同。例如，Poussard v Spiers (1876) 案中，女演员错过首演即违反了条件条款。
A warranty is a less essential term; breach gives rise to damages only, not termination. Bettini v Gye (1876) illustrates a warranty where missing rehearsals did not justify ending the contract.
保证条款则较不关键；违反它仅引发损害赔偿，而不赋予终止权。Bettini v Gye (1876) 案说明，缺席彩排属于违反保证条款，不足以解除合同。
Some terms are innominate (intermediate), where the remedy depends on the gravity of the breach (Hong Kong Fir Shipping v Kawasaki Kisen Kaisha [1962]). The test is whether the breach substantially deprives the innocent party of the whole benefit of the contract.
还存在未定名条款（中间条款），其救济取决于违约的严重程度（Hong Kong Fir Shipping v Kawasaki Kisen Kaisha [1962]）。检验标准是违约是否实质上剥夺了无过错方在合同项下的全部利益。
9. Defences in Criminal Law | 刑事辩护公式
Even when the prosecution has established actus reus and mens rea, the defendant may still avoid liability by raising a recognised defence. The burden may shift to the defendant on a balance of probabilities for some defences.
即便控方已证明存在犯罪行为和犯罪意图，被告人仍可通过主张法定辩护来免除责任。对于部分辩护，举证责任可能会转移到辩方，证明标准为相对可能性。
Full Defence = Complete Denial of Mens Rea or Actus Reus OR Successful Special Defence
完全辩护 = 完全否定犯意或犯罪行为，或成功主张特殊抗辩理由
Self-defence (and defence of another or property) is available where the defendant uses reasonable force in response to an imminent threat (s.76 Criminal Justice and Immigration Act 2008). It is a complete defence, leading to acquittal.
正当防卫（含防卫他人或财产）适用于被告人为应对即刻发生的威胁而使用合理武力时（《2008年刑事司法与移民法》第76条）。它是一项完全辩护，可导致无罪释放。
Duress by threats arises when the defendant is forced to commit a crime because of a threat of death or serious injury (R v Graham [1982]). It is not available for murder or some treason offences.
威迫抗辩出现在被告人因遭受死亡或严重身体伤害的威胁而被迫犯罪时（R v Graham [1982]）。该抗辩不适用于谋杀及部分叛国罪。
Insanity (M’Naghten Rules 1843) is a special defence whereby the defendant must prove that, due to a defect of reason from disease of the mind, they did not know the nature and quality of the act or that it was wrong. The verdict is ‘not guilty by reason of insanity’.
精神失常抗辩（1843年麦克诺顿规则）是一项特殊辩护，被告人须证明因心理疾病导致理性缺陷，不知其行为性质或不知其为错误。判决结果为“因精神失常而无罪”。
Intoxication can only negate specific intent crimes if the defendant lacked the necessary mens rea (DPP v Majewski [1977]). Voluntary intoxication is never a defence to basic intent crimes.
在特定故意犯罪中，自愿醉酒可能否定犯意，但仅在被告人确实缺乏必要故意时成立（DPP v Majewski [1977]）。对于基本故意犯罪，自愿醉酒从不构成辩护。
10. The Damages Formula | 损害赔偿公式
Damages are the primary remedy in both tort and contract, but the aim differs. Understanding the formula helps you remember what each branch of law attempts to achieve.
损害赔偿是侵权和合同中的首要救济方式，但二者目的不同。理解其公式有助于记住各部门法所试图达成的目标。
Tort Damages = Restitutio in Integrum (Restore to Pre-Tort Position)
侵权损害赔偿 = 恢复原状（恢复至侵权前状态）
Contract Damages = Expectation Loss (Put Claimant in Position as if Contract Performed)
合同损害赔偿 = 期待利益损失（使索赔人处于如同合同已履行的位置）
In tort, the court seeks to compensate the claimant for actual losses (physical injury, property damage, economic loss subject to rules on recovery). The aim is not to punish, except in rare cases of exemplary damages.
在侵权中，法院旨在就实际损失（人身伤害、财产损害，以及符合获赔规则的经济损失）对索赔人进行补偿。除非在极其少见的惩罚性赔偿案件中，其目的并非惩罚。
In contract, the leading case Hadley v Baxendale (1854) provides the rule for remoteness: damages are recoverable only if they arise naturally from the breach or were in the reasonable contemplation of the parties. The claimant must also take reasonable steps to mitigate loss.
在合同中，指导性判决 Hadley v Baxendale (1854) 确立了损害的遥远性规则：只有自然产生于违约或为当事方合理预料到的损失，才可获得赔偿。索赔人还须采取合理措施减轻损失。
11. The Precedent Rule | 先例规则定理
The English legal system relies heavily on judicial precedent. The operating rule can be expressed as a hierarchy-wired formula operating vertically through the court structure.
英格兰法律体系高度依赖司法先例。其运作规则可以用一个通过法院层级纵向传递的公式来表达。
Ratio Decidendi = Binding Precedent; Obiter Dictum = Persuasive Precedent
判决理由 = 有约束力的先例；附带意见 = 有说服力的先例
The Supreme Court (formerly House of Lords) binds all courts below it. Since the Practice Statement 1966, the Supreme Court may depart from its own previous decisions when it appears right to do so.
最高法院（原上议院）约束其下级所有法院。自有1966年实践声明以来，最高法院在认为适当时，可背离其自身在先判决。
The Court of Appeal (Civil Division) is bound by Supreme Court decisions and generally by its own decisions, subject to exceptions set out in Young v Bristol Aeroplane Co Ltd [1944]. The Criminal Division adopts a more flexible approach to avoid injustice.
上诉法院（民事庭）受最高法院判决约束，且通常受自身判决约束，例外情形规定于 Young v Bristol Aeroplane Co Ltd [1944] 案。刑事庭则采取更为灵活的态度，以避免不公。
When a court distinguishes a previous case by finding material differences in facts, the precedent formula is not broken; it is simply declared inapplicable.
当法院因发现事实存在重大差异而将先前案例予以区分时，并非打破了先例公式，而是宣告其不适用于本案。
Transactions like reversing or overruling occur at the top of the hierarchy and represent deliberate changes to the ‘theorem’ of binding law.
推翻或撤销前判这类操作发生在法院层级的顶端，代表着对具有约束力的法律“定理”的有意修改。
12. The Human Rights Balancing Test | 人权平衡检验公式
The Human Rights Act 1998 incorporated the European Convention on Human Rights into domestic law. Many rights are qualified, meaning they can be limited if necessary in a democratic society.
《1998年人权法》将《欧洲人权公约》纳入了国内法。许多权利是具有受限制性的，即如有必要，可在民主社会中对其予以限制。
Lawful Interference with a Qualified Right = Prescribed by Law + Legitimate Aim + Necessary in a Democratic Society (Proportionate)
对受限权利的合法干涉 = 法律所规定 + 追求合法目的 + 为民主社会所必需（成比例）
Article 8 (right to respect for private and family life) and Article 10 (freedom of expression) are classic qualified rights. Courts must perform a proportionality balancing exercise, often following the structure in Bank Mellat v HM Treasury (No 2) [2013].
第8条（尊重私人和家庭生活的权利）和第10条（表达自由）是典型的受限权利。法院必须进行比例性平衡检验，通常遵循 Bank Mellat v HM Treasury (No 2) [2013] 案中的分析框架。
When a public authority interferes with a qualified right, the claimant can argue that the interference was not ‘necessary’ because a less intrusive measure could have achieved the same legitimate aim.
当公共权力机构干涉一项受限权利时，索赔人可主张该干涉并非“必要”，因为可能存在侵扰性更小的措施能够同样实现该合法目的。
The horizontal effect of the HRA means that courts, as public authorities, must develop the common law in a way compatible with Convention rights, thereby embedding the balancing formula across all legal disputes.
《人权法》的水平效力意味着法院作为公共权力机构，必须以与公约权利相符的方式发展普通法，从而将该平衡公式融入所有法律争议之中。
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