📚 GCSE CAIE Law: Formula & Principle Quick Reference Handbook | GCSE CAIE 法律：公式与原则速查手册
This handbook sets out the key legal principles, tests and case authorities for CAIE IGCSE / GCSE Law (0984/0972) in the form of ‘formulae’ that you must master. It covers the building blocks of criminal and civil liability, alongside essential procedural and constitutional rules. Use it for quick revision before your examination.
本手册以“公式”形式列出 CAIE IGCSE / GCSE 法律（0984/0972）中必须掌握的关键法律原则、测试标准和判例依据。内容涵盖刑事责任与民事责任的构成要件，以及必要的程序与宪制规则。考试前可用作快速复习。
1. General Criminal Formula | 刑事责任通用公式
The foundation of criminal liability can be expressed as:
刑事责任的基础可用以下公式表达：
Actus Reus (AR) + Mens Rea (MR) – Defence = Criminal Liability
Actus reus is the guilty act, which may include an act, omission (where a duty exists), or a state of affairs. It must be voluntary. The chain of causation links the defendant’s conduct to the result. Read the case of R v White (1910) for the ‘but for’ test, and R v Pagett (1983) for intervening acts.
actus reus 是“犯罪行为”，可包括作为、不作为（存在义务时）或状态事件，必须具有自愿性。因果关系链条将被告的行为与结果连接起来。参照 R v White（1910）的“若非”测试和 R v Pagett（1983）关于介入行为的原则。
Mens rea is the guilty mind. The main forms are intention (direct or oblique), recklessness (R v Cunningham 1957), and negligence (rare in core criminal law at GCSE). For strict liability offences, no mens rea is needed for at least one element of the actus reus.
mens rea 为“犯罪心态”，主要形式有意图（直接或间接）、轻率（R v Cunningham 1957）和疏忽（GCSE 核心刑法中较少）。严格责任犯罪中，对 arcus reus 的至少一个要素不需 mens rea。
A defence negates liability even where AR and MR are present. If a defence succeeds, the formula yields ‘not guilty’.
即便存在 AR 和 MR，抗辩也可否定责任。抗辩成功则公式结果为“无罪”。
2. Non-Fatal Offences Against the Person Formula | 人身犯罪公式
The hierarchy of non-fatal offences can be memorised through their elements:
人身犯罪层级可通过要素记忆：
Assault = Apprehension of immediate unlawful force + (intention or recklessness as to causing apprehension)
Battery = Infliction of unlawful force + (intention or recklessness as to the infliction)
Assault occasioning ABH = Assault or Battery + ‘Actually some hurt or injury’ (R v Miller 1954)
Malicious wounding or inflicting GBH (s.20) = (Wound/GBH) + (intention or recklessness as to some harm)
Wounding or causing GBH with intent (s.18) = (Wound/GBH) + (intention to cause grievous bodily harm or resist arrest)
Assault requires the victim to apprehend immediate unlawful force, even if no contact occurs. Words alone can suffice (R v Ireland 1997). Battery is the actual application of unlawful force, which can be the slightest touching (Collins v Wilcock 1984).
Assault 要求被害人感知到即时的非法暴力，即使未发生接触。仅有言语亦可成立（R v Ireland 1997）。Battery 是实际施加非法武力，最轻微的触碰即可构成（Collins v Wilcock 1984）。
For ABH, the harm must be more than transient, as in T v DPP (2003) where temporary loss of consciousness qualified. GBH means really serious harm (DPP v Smith 1961); psychiatric injury can be GBH (R v Burstow 1997).
对于 ABH，伤害须超出短暂性，如 T v DPP（2003）中短暂意识丧失亦属 ABH。GBH 指真正严重的伤害（DPP v Smith 1961）；精神伤害可构成 GBH（R v Burstow 1997）。
3. Property Offences Formula | 财产犯罪公式
Theft, robbery and burglary can be reduced to structured checklists:
盗窃、抢劫和入室盗窃可简化为结构化清单：
| Offence | Actus Reus | Mens Rea |
|---|---|---|
| Theft (s.1 Theft Act 1968) | Appropriation of property belonging to another | Dishonestly, with intention permanently to deprive |
| Robbery (s.8) | Theft + use or threat of force immediately before or at the time of stealing | MR of theft + intention to use force in order to steal |
| Burglary (s.9(1)(a)) | Entry of a building or part of a building as a trespasser | Intention to steal, inflict GBH or cause criminal damage |
| Burglary (s.9(1)(b)) | Having entered as a trespasser, commits theft or inflicts GBH or attempts either | MR for the ulterior offence |
Theft requires dishonesty: s.2 provides three situations that are not dishonest (belief in legal right, belief in consent, belief the owner cannot be found). The R v Ghosh (1982) test for dishonesty now modified by Ivey v Genting Casinos (2017) asks whether the defendant’s conduct was dishonest by the standards of ordinary reasonable people.
盗窃要求 dishonesty：第 2 条列举三类不具 dishonesty 的情形（相信有合法权利、相信对方同意、相信物主无法找到）。《Ivey v Genting Casinos》（2017）将《R v Ghosh》（1982）的不诚实测试修正为：被告行为是否符合一般理性人的诚实标准。
Robbery requires force or threat of force on any person, and it must be used in order to steal. The force need not be substantial.
抢劫须对任何人使用或威胁使用武力，且以实施盗窃为目的，武力不需要是重大的。
Burglary s.9(1)(a) does not require that the ulterior offence be committed, only intended at the time of entry. Section 9(1)(b) requires actual commission once inside.
(1)(a) 款的入室盗窃不要求后续犯罪实际实施，仅需进入时怀有该意图。(1)(b) 款则要求进入后实际实施。
4. Capacity and General Defences | 能力与通用抗辩
Defences operate to remove liability. The general formula is:
抗辩用于免除责任。通用公式如下：
AR + MR – (Successfully Raised Defence) = No Guilt
Insanity: The M’Naghten Rules (1843) require that at the time of the act, the defendant was labouring under a defect of reason from disease of the mind, so as not to know the nature and quality of his act or that it was wrong. This is a full defence leading to a special verdict.
精神错乱：《M’Naghten 规则》（1843）要求被告在行为当时，因精神疾病导致理性缺陷，以致不知行为性质或不知行为是错误的。属完全抗辩，导致特殊裁决。
Automatism: Total destruction of voluntary control due to an external factor (R v Quick 1973). If caused by an internal disorder, it is insanity.
automatism：因外部因素导致自控力完全丧失（R v Quick 1973）。若由内在疾病引起，则属精神错乱。
Intoxication: Voluntary intoxication is a defence only to specific intent crimes, not basic intent. Involuntary intoxication can be a defence to any crime if MR is absent. DPP v Majewski (1977) clarifies that becoming intoxicated voluntarily is a reckless course of conduct providing the MR for basic intent crimes.
醉酒：自愿醉酒仅能作为特定意图犯罪的抗辩，不能用于基本意图犯罪。非自愿醉酒若导致缺乏 MR，可作任何罪的抗辩。DPP v Majewski（1977）阐明，自愿醉酒本身就是轻率行为，为基本意图犯罪提供了 MR。
Self-defence / prevention of crime: Governed by s.3 Criminal Law Act 1967 and common law. The force used must be reasonable in the circumstances as the defendant honestly believed them to be (R v Palmer 1971). The defence fails if the force was disproportionate, but a householder defending against an intruder is given greater latitude (s.76 Criminal Justice and Immigration Act 2008).
正当防卫/预防犯罪：受 1967 年《刑事法》第 3 条及普通法约束。使用武力须在被告诚实地相信的情境下是合理的（R v Palmer 1971）。若武力不成比例则抗辩失败，但住户防卫侵入者时享有更大宽容度（2008 年《刑事司法与移民法》第 76 条）。
Duress: Available for all crimes except murder, attempted murder and some forms of treason. It requires a threat of death or serious injury, directed at the defendant or a person for whom he is responsible, which caused the defendant to act as he did (R v Graham 1982). The threat must be immediate and the defendant must show average steadfastness.
胁迫：除谋杀、谋杀未遂及部分叛国罪外，适用于所有犯罪。要求存在对被告或其负责之人的死亡或重伤威胁，并导致被告如此行事（R v Graham 1982）。威胁须即时，被告须展现出一般勇气标准。
5. Fatal Offences and Partial Defences | 致命犯罪与部分抗辩
Murder: AR is the unlawful killing of a reasonable creature in being under the Queen’s peace. MR is intention to kill or cause GBH (R v Vickers 1957).
谋杀：AR 是对女王和平下之人的非法杀害，MR 为意图杀人或造成 GBH（R v Vickers 1957）。
Voluntary manslaughter: Occurs when murder is reduced by a partial defence.
故意杀人罪：当谋杀因部分抗辩减轻时成立。
Diminished responsibility: s.2 Homicide Act 1957 as amended by s.52 Coroners and Justice Act 2009. The defendant must have an abnormality of mental functioning arising from a recognised medical condition which substantially impaired his ability to understand the nature of his conduct, form a rational judgment, or exercise self-control, and which provides an explanation for the killing.
减轻责任：1957 年《杀人罪法》第 2 条，经 2009 年《验尸官与司法法》第 52 条修订。被告须因公认医学状况导致精神功能异常，实质上损害其理解行为性质、形成理性判断或行使自控的能力，并为杀人行为提供解释。
Loss of control: s.54–55 Coroners and Justice Act 2009. The defendant must lose self-control due to a qualifying trigger (fear of serious violence, or things said/done constituting circumstances of an extremely grave character causing a justified sense of being seriously wronged). A person of the defendant’s sex and age with a normal degree of tolerance and self-restraint would have reacted in the same way.
丧失自控：2009 年《验尸官与司法法》第 54-55 条。被告须因适格诱因（对严重暴力的恐惧，或被告被严重侮辱并由此产生正当的被严重冤屈感，且诱因性质极其严重）丧失自控。与被告同性别、同年龄、具有正常容忍度和自控力的人在同样情况下亦会如此反应。
6. Negligence Formula | 过失侵权公式
Negligence is the most important tort at GCSE. Establish liability step-by-step:
过失侵权是 GCSE 最重要的侵权类型。按步骤确定责任：
Duty of Care + Breach of Duty + Causation + Damage (Not too remote) = Liability
Duty: The neighbour principle from Donoghue v Stevenson (1932) asks whether the defendant ought to have foreseen that the claimant might be injured by his acts. Modern approach: Caparo Industries v Dickman (1990) three-stage test: (1) was damage reasonably foreseeable? (2) is there a relationship of proximity? (3) is it fair, just and reasonable to impose a duty?
义务：Donoghue v Stevenson（1932）的邻人原则，即被告是否应当预见其行为可能导致原告受伤。现代方法：《Caparo Industries v Dickman》（1990）三阶段测试：(1) 损害可否合理预见？(2) 是否存在密切关系？(3) 施加义务是否公平、公正和合理？
Breach: The court applies the objective standard of the reasonable person. Professional standards are higher: Bolam v Friern Hospital Management Committee (1957) test asks whether the defendant acted in accordance with a responsible body of professional opinion. Factors relevant to breach include the magnitude of risk, seriousness of harm, cost of precautions and social utility (Watt v Hertfordshire CC 1954).
违反义务：法院适用客观的合理人标准。专业人士标准更高：《Bolam v Friern Hospital Management Committee》（1957）测试问被告行为是否符合一群体负责任的专业意见。影响违反义务的因素包括风险大小、损害严重性、预防成本和社会效益（Watt v Hertfordshire CC 1954）。
Causation: Factual causation uses the ‘but for’ test (Barnett v Chelsea & Kensington HMC 1969). Legal causation requires the defendant’s breach to be an effective and operating cause, and not broken by a novus actus interveniens. Type of damage must be foreseeable: The Wagon Mound (1961).
因果关系：事实因果关系采用“若非”测试（Barnett v Chelsea & Kensington HMC 1969）。法律因果关系要求被告的违反义务行为是有效和持续的原因，且未被新介入行为打断。损害类型必须可预见：《The Wagon Mound》（1961）。
Damage: The claimant must have suffered an actual loss: personal injury, property damage, or consequential economic loss. Pure economic loss is not recoverable in negligence outside special relationships. Psychiatric harm has special rules (Alcock v Chief Constable of South Yorkshire 1992).
损害：原告须遭受实际损失：人身伤害、财产损害或附带经济损失。过失侵权中纯粹经济损失通常不可追偿，除特殊关系外。精神伤害有特殊规则（Alcock v Chief Constable of South Yorkshire 1992）。
7. Occupiers’ Liability Formula | 占有人责任公式
Occupiers owe a duty to lawful visitors under the Occupiers’ Liability Act 1957, and to trespassers under the Occupiers’ Liability Act 1984.
占有人对合法访客的义务由 1957 年《占有人责任法》规定，对侵入者则由 1984 年该法规定。
OLA 1957: Occupier + Visitor + Danger due to state of premises + Breach of common duty of care = Liability
The common duty of care is to take such care as is reasonable to see that the visitor is reasonably safe in using the premises for the purposes for which he is invited or permitted. An occupier can discharge the duty by giving a warning (Roles v Nathan 1963).
一般注意义务是采取合理措施，确保访客因受邀或被允许的目的使用该场所时处于合理安全。占有人可通过警告解除义务（Roles v Nathan 1963）。
OLA 1984: Occupier + Non-visitor (Trespasser) + Danger due to state of premises + (Awareness + reasonable grounds to believe + risk one ought to offer protection) + Failure to take reasonable care = Liability
The 1984 Act requires the occupier to be aware of the danger, know that a trespasser may come into its vicinity, and the risk is one against which, in all the circumstances, he may reasonably be expected to offer some protection.
1984 年法要求占有人知悉危险，知道侵入者可能进入危险附近，且该风险是在所有情况下可合理期待其提供一定保护的风险。
8. Rylands v Fletcher and Nuisance | 赖兰兹诉弗莱彻案与妨害
Rylands v Fletcher (1868) imposes strict liability for escape of a dangerous thing. The formula:
Rylands v Fletcher（1868）对危险物的逸出施加严格责任。公式：
Accumulation + Thing likely to do mischief if it escapes + Escape + Non-natural use of land + Damage = Liability
The thing must be brought onto the land and kept there. Non-natural use means some special use bringing with it increased danger to others (Rickards v Lothian 1913). Defences include act of a stranger, default of the claimant, consent, statutory authority and act of God.
该物必须被带入并保持在土地上。非自然使用指对他人带来额外危险的特殊使用（Rickards v Lothian 1913）。抗辩包括陌生人行为、原告过错、同意、法定授权及天灾。
Private nuisance: Unlawful interference with a person’s use or enjoyment of land. The court balances the competing interests of neighbours (Miller v Jackson 1977). Factors include locality, duration, sensitivity of claimant and malice. The interference must be unreasonable.
私人妨害：对个人土地使用或享受的非法干扰。法庭权衡相邻利益（Miller v Jackson 1977）。考虑因素包括地点、持续性、原告诉求的敏感性及恶意。干扰须达到不合理程度。
9. Civil Remedies Formula | 民事救济公式
The primary remedy in tort is damages. The aim is to put the claimant in the position they would have been in but for the tort.
侵权的主要救济是损害赔偿，旨在将原告置于若无侵权本应处的地位。
Damages = Special Damages (quantifiable losses) + General Damages (non-quantifiable, e.g. pain and suffering)
Special damages cover loss of earnings, medical expenses and damage to property up to the date of trial. General damages cover future losses, pain, suffering and loss of amenity. In personal injury, the lump sum principle applies.
特别损害赔偿涵盖至审结之日的收入损失、医疗费用和财产损害。一般损害赔偿涵盖未来损失、痛苦、创伤和丧失舒适生活。人身伤害中适用一次性总付原则。
Injunctions: A discretionary equitable remedy, either prohibitory (preventing an act) or mandatory (compelling an act). The court considers whether damages would be an adequate remedy and the balance of convenience. In Miller v Jackson, an injunction was refused despite nuisance being proved.
禁制令：衡平法上的自由裁量救济，可为禁止性（阻止行为）或强制性（迫使行为）。法庭考虑损害赔偿是否足够救济以及便利平衡。在 Miller v Jackson 案中，虽妨害成立却拒绝颁发禁制令。
10. Sources of Law and Interpretation | 法律渊源与解释
The doctrine of judicial precedent follows this logic:
司法先例原则遵循如下逻辑：
Ratio decidendi (binding reason) + Material facts similar + Court hierarchy = Binding Precedent
Obiter dicta are persuasive only. The Supreme Court (formerly House of Lords) is not bound by its own previous decisions but it follows them in the interests of certainty unless it exercises the 1966 Practice Statement. Lower courts are bound by higher courts.
obiter dicta 仅具说服力。最高法院（原上议院）不受自身先前判决约束，但为确定性通常遵循，除非行使 1966 年实践声明。下级法院受上级法院约束。
Statutory interpretation tools include the literal rule, golden rule, mischief rule (Smith v Hughes 1960), and purposive approach. Intrinsic aids and extrinsic aids (Pepper v Hart 1993) assist.
成文法解释工具包括字面规则、黄金规则、疑罪规则（Smith v Hughes 1960）和目的解释法。内在辅助和外在辅助（Pepper v Hart 1993）可助解释。
11. Police Powers and Basic Rights | 警察权力与基本权利
The Police and Criminal Evidence Act 1984 (PACE) sets the framework for stop and search, arrest, detention and questioning. A lawful arrest requires:
1984 年《警察与刑事证据法》（PACE）为拦截搜查、逮捕、拘留和讯问提供框架。合法逮捕要件：
Involvement in an offence + Reasonable grounds for suspicion + Necessity conditions (Code G) = Lawful Arrest
After arrest, detention must be reviewed by a custody officer. Detention without charge can last up to 24 hours, extendable to 36 hours for an indictable offence, and further to 96 hours under warrant.
被捕后羁押须由羁押官复核。未经指控的羁押不得超过 24 小时，对可公诉罪可延长至 36 小时，凭令状可再延至 96 小时。
The Human Rights Act 1998 incorporated the European Convention on Human Rights. Article 5 (liberty), Article 6 (fair trial), Article 8 (private life) and Article 10 (expression) are particularly significant. Any interference must be ‘necessary in a democratic society’ and proportionate.
《1998 年人权法》纳入了《欧洲人权公约》。第 5 条（自由）、第 6 条（公正审判）、第 8 条（私生活）和第 10 条（表达）尤其重要。任何干预必须为“民主社会所必需”且相称。
12. Quick Reference Glossaries and Checklists | 快速参考词汇与检查表
Key Latin terms:
关键拉丁术语：
| Actus reus | Guilty act |
| Mens rea | Guilty mind |
| Novus actus interveniens | New intervening act breaking the chain of causation |
| Ratio decidendi | Reason for the decision (binding) |
| Obiter dicta | Things said by the way (persuasive) |
| Volenti non fit injuria | No injury is done to a willing person (consent defence in tort) |
Revision checklist: Can you write the formulae for theft and robbery? Can you explain the Caparo test? Can you list the defences to a negligence claim? Do you know when voluntary intoxication is available? Keep this handbook by your side and test yourself on each formula before the exam.
复习检查表：你能写出盗窃和抢劫的要件公式吗？能解释 Caparo 测试吗？能列出过失请求的抗辩吗？知道何时可用自愿醉酒抗辩吗？考前将此手册置于身旁，逐一自测每个公式。
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