📚 Year 7 CAIE Law: Formulas & Principles Quick Reference | 法律公式与定理速查手册
This concise guide collects the essential “formulas” of law – short, memorable statements that capture key legal principles. Think of each as a rule you can apply to analyse situations, from criminal behaviour to agreements and disputes. Mastering these building blocks will give you a strong foundation for Year 7 CAIE Law and beyond.
这本简明速查手册汇集了法律的基本“公式”——即用简短好记的语句表达的关键法律原则。你可以把每一条公式当作分析问题的工具，无论是犯罪行为、协议还是纠纷。掌握这些基石内容，将为你学习 Year 7 CAIE 法律以及后续课程打下扎实基础。
1. Formula of the Rule of Law | 法治的公式
RUL = S (Supremacy of Law) + A (Accountability) + F (Fair Procedures) + E (Equality before Law)
The rule of law means that law is supreme – nobody is above it. All persons and institutions, including the government, must obey the law. Accountability ensures that those who exercise power can be challenged legally. Fair procedures require that legal processes be open, impartial and accessible. Equality before the law demands that every individual is treated equally, without discrimination.
法治 = 法律至上 + 问责制 + 公正程序 + 法律面前人人平等
法治意味着法律拥有最高权威——没有人凌驾于法律之上。所有人和机构，包括政府，都必须遵守法律。问责制确保掌权者可以受到合法质疑。公正程序要求法律流程公开、公正、可及。法律面前人人平等则要求每个人都不受歧视地得到平等对待。
2. Criminal Liability Formula | 刑事责任公式
Crime = Actus Reus (Guilty Act) + Mens Rea (Guilty Mind)
For a person to be found guilty of most crimes, two elements must be proven. Actus reus is the physical act of the crime – doing, or sometimes failing to do, something forbidden by law. Mens rea is the mental element – intention, knowledge, recklessness or negligence. Both must coincide in time. Strict liability offences are an exception where only the act is required.
犯罪 = 犯罪行为 (actus reus) + 犯罪意图 (mens rea)
要使某人被判犯下大多数罪行，必须证明两个要素。犯罪行为指的是物理上的作为，即做了法律禁止的事，有时也包括不作为。犯罪意图是心理要素——故意、明知、轻率或疏忽。二者必须在时间上同时存在。严格责任犯罪则是例外，只需存在行为即可。
3. Burden and Standard of Proof Formula | 举证责任与证明标准公式
Prosecution proves guilt = Legal Burden (D must prove defence on balance of probabilities) + Standard of Proof (Beyond reasonable doubt for criminal, balance of probabilities for civil)
In criminal trials, the prosecution bears the legal burden of proving the defendant’s guilt. The standard is high: beyond reasonable doubt. If the defendant raises a defence, they may carry an evidential burden, but once raised, the prosecution must disprove it. In civil cases, the claimant must prove their case on the balance of probabilities – it is more likely than not that the events happened.
控方证明有罪 = 法定举证责任（被告须以概率平衡标准证明抗辩）+ 证明标准（刑事：超越合理怀疑；民事：概率平衡）
在刑事审判中，控方负有证明被告有罪的法定举证责任。标准很高：必须达到超越合理怀疑的程度。如果被告提出抗辩，可能承担提供证据的责任，但一旦提出，控方就必须推翻该抗辩。在民事案件中，原告须以概率平衡标准证明自己的主张——即事件发生的可能性大于不发生的可能性。
4. Contract Formation Equation | 合同成立方程式
Contract = Offer + Acceptance + Consideration + Intention to Create Legal Relations
A binding contract requires four elements. An offer is a clear statement of terms on which the offeror is willing to be bound. Acceptance must be unconditional and communicated. Consideration is something of value exchanged between the parties – each must give and receive something. Intention to create legal relations means the parties meant their agreement to have legal consequences; in social or domestic agreements, it is often presumed absent, while in commercial agreements it is presumed present.
合同 = 要约 + 承诺 + 对价 + 创设法律关系的意图
一份具有约束力的合同需要四个要素。要约是明确表达了要约人愿意受约束的条件声明。承诺必须是无条件的且被传达。对价是当事人之间交换的有价值之物——双方都必须有所予、有所取。创设法律关系的意图意味着当事人意图使协议具有法律后果；通常在社会或家庭协议中推定不存在，而在商业协议中推定存在。
5. Negligence Equation | 过失侵权方程式
Negligence = Duty of Care + Breach of Duty + Damage + Causation (Factual & Legal)
To succeed in a negligence claim, a claimant must establish that the defendant owed them a duty of care (neighbour principle from Donoghue v Stevenson). The defendant must have breached that duty by failing to meet the standard of a reasonable person. The breach must have caused damage that is not too remote – factual causation (the ‘but for’ test) and legal causation (proximate cause) must both be satisfied. The claimant must have suffered a recognised type of loss, such as physical injury or property damage.
过失侵权 = 注意义务 + 违反义务 + 损害 + 因果关系（事实与法律）
要想在过失侵权索赔中胜诉，原告必须证明被告对其负有注意义务（邻居原则，源自 Donoghue v Stevenson 案）。被告必须因未达到理性人的标准而违反了该义务。违反义务必须造成了并非过于间接的损害——必须同时满足事实因果关系（“若无则不”检验）和法律因果关系（近因）。原告必须遭受了公认类型的损失，例如人身伤害或财产损坏。
6. Statutory Interpretation Rules | 法律解释规则
Interpretation toolkit = Literal Rule (ordinary meaning) + Golden Rule (modify to avoid absurdity) + Mischief Rule (suppress the mischief) + Purposive Approach (wider purpose of Act)
Judges use several approaches when the meaning of a statute is unclear. The literal rule gives words their plain, dictionary meaning. If that leads to an absurd result, the golden rule allows a slight modification. The mischief rule looks at the problem the Act was designed to remedy and interprets words to suppress that mischief. The purposive approach goes beyond the text to consider the overall purpose of the legislation, often used in human rights or EU-derived laws.
解释工具包 = 文义规则（通常含义）+ 黄金规则（为避免荒谬而修改）+ 除弊规则（填补漏洞）+ 目的解释法（法律的整体目的）
当法条含义不清时，法官会使用几种方法。文义规则赋予词语平实、字典上的含义。如果这样导致荒谬结果，黄金规则允许稍作修改。除弊规则审视该法律旨在解决的问题，并以此解释词语以消除弊端。目的解释法不仅限于文本，而是考虑立法总体目的，常用于人权法或源于欧盟的法律。
7. Presumption of Innocence Principle | 无罪推定原则
Accused presumed innocent → Prosecution must rebut presumption with evidence beyond reasonable doubt
Every person charged with a criminal offence is presumed innocent until proven guilty according to law. This fundamental right shifts the entire burden onto the prosecution. The accused does not have to prove their innocence; silence alone cannot be treated as evidence of guilt in many jurisdictions. This principle is protected by Article 6 of the European Convention on Human Rights and similar constitutional guarantees worldwide.
被告被推定无罪 → 控方必须以超越合理怀疑的证据推翻该推定
每一个被指控犯有刑事罪的人，在依法被证实有罪之前，都被推定无罪。这项基本权利将全部举证责任转移到控方身上。被告无须证明自己无罪；在许多司法管辖区，沉默本身不能被当作有罪的证据。该原则受到《欧洲人权公约》第 6 条以及全世界类似宪法保障的保护。
8. Defence Formulas: Self-defence & Necessity | 抗辩公式：正当防卫与紧急避险
Self-defence = Honest belief of imminent threat + Reasonable force
A person may use force to protect themselves, another person, or property. The defence requires that the defendant honestly believed that the threat of attack was imminent. The amount of force used must be no more than is reasonable in the circumstances as the defendant perceived them. Excessive, disproportionate force will cause the defence to fail.
正当防卫 = 真实相信存在紧迫威胁 + 合理的武力
一个人可以使用武力保护自己、他人或财产。该抗辩要求被告真实相信攻击威胁迫在眉睫。所使用武力的程度不得超过被告在当时所认知的情形下合理的范围。过度、不成比例的武力会使这一抗辩失效。
Necessity = Act done to avoid greater evil + No reasonable alternative + Harm avoided outweighs harm caused
The defence of necessity arises where a person breaks the law to prevent a greater harm. It is rarely available in murder cases. The defendant must show that the action was necessary to avoid an imminent danger, there was no practical alternative, and the harm avoided was significantly greater than the harm caused by breaking the law.
紧急避险 = 为避免更大损害而行事 + 无合理替代方案 + 避免的损害超过造成的损害
紧急避险的抗辩适用于为阻止更大损害而违反法律的情形。在谋杀案中很少能成功援引。被告必须证明，该行为为躲避紧迫危险所必需，实际没有其他选择，且避免的损害远大于违反法律所造成的损害。
9. Sources of Law Formula | 法律渊源公式
Modern Legal System = Statute Law (Acts of Parliament) + Common Law (Judicial Precedents) + Equity (Fairness principles)
Law comes from three main sources. Statute law is made by Parliament and is supreme – it can override any other source. Common law is developed by judges through decisions in cases, following the doctrine of precedent or stare decisis (lower courts follow higher courts). Equity developed historically to supplement the common law, providing remedies such as injunctions and principles like trusts, guided by the maxim “He who comes to equity must come with clean hands.”
现代法律体系 = 成文法（议会立法）+ 普通法（司法判例）+ 衡平法（公平原则）
法律主要有三个渊源。成文法由议会制定，具有最高地位——可以否决其他任何渊源。普通法由法官通过个案判决发展而来，遵循先例原则即 stare decisis（下级法院遵循上级法院）。衡平法历史上是为了补充普通法而发展出来的，它提供了诸如禁制令等救济措施以及信托等原则，受“寻求衡平救济者自身须清白”等格言指引。
10. Court Hierarchy as a Decision Tree | 法庭等级体系决策树
Supreme Court (final appeals) ↑ Court of Appeal (Civil & Criminal Divisions) ↑ High Court (Queen’s Bench, Chancery, Family) ↑ Crown Court / County Court ↑ Magistrates’ Court / Tribunals
Understanding the court structure helps predict where appeals go and which decisions are binding. The Supreme Court, formerly the House of Lords, is the highest domestic court. Its decisions bind all lower courts. The Court of Appeal hears appeals from the High Court and Crown Court. The High Court deals with more serious civil cases and some criminal appeals. Below it, the Crown Court tries serious criminal offences, while the Magistrates’ Court handles summary offences and preliminary hearings. Tribunals specialise in areas such as employment and immigration.
最高法院（终审上诉）↑ 上诉法院（民事和刑事分庭）↑ 高等法院（王座庭、大法官庭、家事庭）↑ 刑事法院／郡法院 ↑ 治安法院／审裁处
理解法院结构有助于预测上诉路径并知晓哪些判决具有约束力。最高法院，前身为上议院，是国内最高级别法院，其判决对所有下级法院具有约束力。上诉法院受理来自高等法院和刑事法院的上诉。高等法院处理较重大的民事案件及部分刑事上诉。其下的刑事法院审理严重刑事犯罪，治安法院则处理简易程序罪行及初步聆讯。审裁处专门处理就业、移民等特定领域。
11. Key Legal Latin Reference | 重要法律拉丁术语速查
The following terms appear frequently in legal reasoning. Memorising them will help you read and analyse cases and statutes with confidence. Think of this table as a decoder for the language of law.
以下术语在法律推理中频繁出现。熟记它们能帮助你自信地阅读与分析案例和法条。请将这张表格当作法律语言的解码器。
| Latin Term | Meaning | 中文含义 |
|---|---|---|
| Actus reus | Guilty act | 犯罪行为 |
| Mens rea | Guilty mind | 犯罪意图 |
| Stare decisis | Stand by things decided (precedent) | 遵循先例 |
| Obiter dicta | Things said by the way (not binding) | 附带意见（不具约束力） |
| Ratio decidendi | Reason for decision (binding) | 判决理由（具约束力） |
| Ignorantia juris non excusat | Ignorance of the law is no excuse | 不知法不免责 |
| Nemo dat quod non habet | No one gives what they do not have | 没有人可以给予自己没有的东西 |
| Volenti non fit injuria | To a willing person, no injury is done (consent) | 自愿者不受损害（同意） |
| Res ipsa loquitur | The thing speaks for itself | 事实自证 |
12. Legal Ethics Recap: The Integrity Check | 法律伦理总结：诚信检验
Justice = Fair Hearing + Independent Judge + Open Process + Right to Representation
Beyond specific rules, the legal system is built on ethical foundations. Every trial and procedure must obey natural justice: the right to a fair hearing (audi alteram partem – hear the other side) and the rule against bias (nemo judex in causa sua – no one should be a judge in their own cause). An independent judiciary, open courts and access to legal representation are not optional extras but constitutional safeguards that keep the Rule of Law alive.
公正 = 公平聆讯 + 独立法官 + 公开程序 + 获得代理的权利
在具体规则之外，法律体系建立在伦理基础之上。每一次审判和程序都必须遵守自然正义原则：获得公平聆讯的权利（audi alteram partem——听取另一方陈词）和反对偏私的规则（nemo judex in causa sua——任何人不得审理自己的案件）。独立的司法、公开的法庭以及获得法律代理的机会并非可有可无的附加项，而是维持法治生命力的宪法保障。
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