KS3 OCR Economics: Essential Terms Memorisation Guide | KS3 OCR 经济：词汇术语速记指南

📚 KS3 OCR Economics: Essential Terms Memorisation Guide | KS3 OCR 经济：词汇术语速记指南

Welcome to your fast-track memory guide for KS3 OCR Economics. This resource breaks down the most important terminology into bite-sized explanations paired with memorable tricks, visuals, and patterns. Whether you are preparing for a topic test or end-of-year assessment, mastering these words will boost your confidence and your grades.

欢迎使用 KS3 OCR 经济速记指南。我们将最重要的术语拆分为易于理解的小块，配合记忆技巧、图像和模式，帮助你轻松掌握。无论你是在准备随堂测验还是年末考试，牢记这些词汇都会提升你的自信心和成绩。

1. Scarcity and Choice | 稀缺与选择

Scarcity is the fundamental economic problem: we have unlimited wants but limited resources. Because we cannot have everything, we must make choices. Every choice involves giving up the next best alternative, which is called opportunity cost.

稀缺是经济学的基本问题：我们的欲望无限，但资源有限。正因为无法拥有一切，我们必须做出选择。每一次选择都意味着放弃次优的替代选项，这个被放弃的选择就是机会成本。

Scarcity means that resources like time, money, and raw materials are finite. For example, a student has only two hours of free time, which must be split between studying and playing video games.

稀缺意味着时间、金钱和原材料等资源是有限的。比如，一个学生只有两小时空闲时间，必须在学习和打游戏之间分配。

Opportunity Cost = Value of Next Best Alternative Foregone

机会成本 = 放弃的次优选择的价值

Memory trick: Think of ‘Scarcity’ as ‘Scarce City’ — a tiny town where everything is in short supply. For opportunity cost, remember ‘the road not taken’.

记忆技巧：把 ‘Scarcity’ 想象成 ‘Scarce City’——一座什么都缺的小镇。机会成本，记作“未选之路”。

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2. Needs and Wants | 需要与欲望

Needs are essentials for survival, such as food, water, shelter, and clothing. Wants are desires that improve our quality of life but are not vital, like a new smartphone or a holiday. The distinction is crucial because economic decisions often prioritise needs.

需要是生存的必需品，如食物、水、住所和衣服。欲望是提升生活品质的愿望，但并非生存所需，比如新款手机或度假。这一区分很重要，因为经济决策常优先满足需要。

In economic terms, goods that satisfy needs are called necessities, while those satisfying wants are called luxuries. A need for one person can be a want for another — context matters.

在经济术语中，满足需要的商品称为必需品，满足欲望的称为奢侈品。对一个人是需要，对另一个人可能只是欲望，要视情况而定。

Memory trick: ‘Need has four letters, like “live”; Want has four letters as well, but “want” often costs extra money.’

记忆技巧：’Need’ 这四个字母，像 ‘live’（生存）；’Want’ 也四个字母，但它往往多花钱。

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3. Goods and Services | 商品与服务

Goods are physical, tangible items you can touch, such as books, apples, or bicycles. Services are intangible activities provided by others, like a haircut, a bus ride, or education. Both satisfy human wants, but they differ in ownership — you own a good, but you experience a service.

商品是有形的、可触摸的物品，如书籍、苹果或自行车。服务是他人提供的无形活动，如理发、乘公交或教育。两者都能满足欲望，但在所有权上有差异——你拥有商品，但你体验服务。

• Consumer goods are bought for personal use (e.g. a chocolate bar). Capital goods help produce other goods (e.g. a factory machine).

  消费品是为个人使用购买的（如巧克力棒）。资本品用于生产其他商品（如工厂机器）。

• Services include healthcare, banking, and entertainment. They are consumed at the point of sale.

  服务包括医疗、银行和娱乐。它们在消费时即被“消耗”。

Memory trick: Goods — ‘You can drop it on your foot’; Services — ‘Someone does it for you’.

记忆技巧：商品——’你能把它砸到脚上’；服务——’某人替你做的’。

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4. Factors of Production | 生产要素

The four factors of production are Land, Labour, Capital, and Enterprise. Together they produce the goods and services we use. Every business must combine these inputs to create output.

四种生产要素是土地、劳动力、资本和企业家精神。它们共同生产出我们使用的商品和服务。每个企业都必须综合这些投入来创造产出。

Land includes all natural resources (forests, oil, water). Labour is human effort, both physical and mental. Capital refers to man-made tools and machinery, not money. Enterprise is the risk-taking ability to bring the other three factors together.

土地包括所有自然资源（森林、石油、水）。劳动力指人类的体力和脑力付出。资本指人造的工具和机器，不是金钱。企业家精神是将其他三种要素整合起来的风险承担能力。

Memory trick: Use the acronym ‘L L C E’ — Land, Labour, Capital, Enterprise. Think: ‘Laura’s Lovely Cake Enterprise’.

记忆技巧：用首字母 ‘L L C E’ ——土地、劳动力、资本、企业家精神。联想“劳拉的可爱蛋糕企业”。

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5. Supply and Demand | 供给与需求

Demand is the quantity of a good or service that consumers are willing and able to buy at a given price. Generally, when price rises, quantity demanded falls — this is the law of demand. Supply is the quantity that producers are willing and able to sell at a given price. When price rises, quantity supplied tends to increase — the law of supply.

需求指在某一价格下，消费者愿意并能够购买的商品或服务的数量。通常，价格上升，需求量下降——这是需求定律。供给指在某一价格下，生产者愿意并能够销售的数量。价格上升，供给量通常增加——这是供给定律。

Law of Demand	Price ↑ → Quantity Demanded ↓
需求定律	价格 ↑ → 需求量 ↓
Law of Supply	Price ↑ → Quantity Supplied ↑
供给定律	价格 ↑ → 供给量 ↑

Memory trick: Demand falls when price climbs — think ‘D for down, as price goes up’. Supply goes up with price — ‘S for same direction’. Or picture a seesaw: demand downwards, supply upwards.

记忆技巧：价格攀升时需求下降——记作 ‘D for down’。供给随价格上升——’S for same direction’。想象跷跷板：需求向下，供给向上。

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6. Market Equilibrium | 市场均衡

Equilibrium is the point where the quantity demanded equals the quantity supplied. At this price, there is no shortage (excess demand) and no surplus (excess supply). Markets naturally move toward equilibrium through price adjustments.

均衡是需求量与供给量相等的点。在此价格下，没有短缺（超额需求）也没有过剩（超额供给）。市场通过价格调整自然地趋向均衡。

If the price is set too high, a surplus occurs — suppliers produce more than consumers buy. If the price is too low, a shortage results. The equilibrium price clears the market.

如果价格定得过高，会出现过剩——供给超过需求。价格过低则产生短缺。均衡价格能出清市场。

Memory trick: Equilibrium sounds like ‘equal library’ — all books (goods) find a reader (buyer). Shortage is a ‘short’ supply, surplus is a ‘plus’ — extra.

记忆技巧：均衡（Equilibrium）听起来像 ‘equal library’——所有书都找到读者。短缺是供应“短”了，过剩是“过”多了。

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7. Money and Banking | 货币与银行

Money serves as a medium of exchange, a unit of account, a store of value, and a standard of deferred payment. Banks act as intermediaries between savers and borrowers, offering accounts, loans, and payment services.

货币充当交换媒介、记账单位、价值储藏和延期支付标准。银行作为储户和借款人之间的中介，提供账户、贷款和支付服务。

Current accounts allow daily transactions; savings accounts help accumulate interest. Interest is the reward for saving and the cost of borrowing.

活期账户用于日常交易；储蓄账户帮助积累利息。利息是储蓄的回报，也是借款的成本。

Memory trick: The four functions of money spell ‘M M S S’ — Medium, Measure (unit of account), Store, Standard. Think: ‘My Money Saves Shopping’.

记忆技巧：货币的四大职能首字母 ‘M M S S’ ——媒介、衡量（记账单位）、储藏、标准。联想“我的钱省购物”。

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8. Budgeting and Personal Finance | 预算与个人理财

A budget is a plan for managing income and expenditure. It helps individuals avoid debt and save for future goals. Key terms include income, expenses, surplus (income > expenses), and deficit (expenses > income).

预算是管理收入和支出的计划。它帮助个人避免债务并为未来目标储蓄。关键术语有收入、支出、盈余（收入 > 支出）和赤字（支出 > 收入）。

The 50/30/20 rule is a simple budgeting method: 50% of income on needs, 30% on wants, and 20% on savings or debt repayment. Tracking spending is essential for financial wellbeing.

50/30/20 规则是一种简单的预算方法：50% 的收入用于需要，30% 用于欲望，20% 用于储蓄或还债。追踪支出对财务健康至关重要。

Memory trick: Budget rhymes with ‘judge it’ — judge your spending. 50/30/20 can be remembered as ‘Needs, Wants, Save’ — NWS, like ‘News’.

记忆技巧：Budget 音似 ‘judge it’（评判支出）。50/30/20 记作 “需要，欲望，储蓄”——首字母 NWS，像新闻（News）。

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9. Economic Systems | 经济体系

An economic system determines how a society allocates resources. The three main types are market economy (decisions by private individuals and firms), command economy (government decides), and mixed economy (combination of both).

经济体系决定社会如何分配资源。三种主要类型是市场经济（由个人和企业决策）、计划经济（政府决策）和混合经济（二者结合）。

• Market economy: relies on price signals and competition. Consumers and producers act in self-interest.

  市场经济：依赖价格信号和竞争。消费者和生产者基于自利行动。

• Command economy: government owns resources and plans production. Shortages and surpluses are common.

  计划经济：政府拥有资源并规划生产。短缺和过剩常见。

• Mixed economy: most modern economies. Government provides public goods like defence and regulates markets.

  混合经济：大多数现代经济体。政府提供国防等公共品并监管市场。

Memory trick: Think ‘M-C-M’ like ‘My Cat Mouse’ — Market, Command, Mixed. Or picture a traffic light: green (market), red (command), amber (mixed).

记忆技巧：记作 ‘M-C-M’（市场、计划、混合），想象红绿灯：绿灯（市场）、红灯（计划）、黄灯（混合）。

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10. Inflation and Deflation | 通货膨胀与通货紧缩

Inflation is a sustained rise in the general price level, reducing the purchasing power of money. Deflation is a sustained fall in prices, which can discourage spending and lead to economic slowdowns.

通货膨胀是总体价格水平持续上升，导致货币购买力下降。通货紧缩是价格持续下降，可能抑制消费并导致经济放缓。

If inflation is high, each pound buys fewer goods. Central banks aim for low and stable inflation, often around 2%. Deflation can be worse because it raises the real value of debt.

如果通胀高企，每英镑能买到的商品变少。央行追求低而稳定的通胀，通常目标在 2% 左右。通货紧缩可能更糟，因为它会提高债务的实际价值。

Memory trick: Inflation — imagine a balloon inflating, prices swell up. Deflation — deflating balloon, everything shrinks. ‘In-flat’ = blowing up.

记忆技巧：通货膨胀——想象气球充气，价格膨胀。通货紧缩——气球放气，一切收缩。’In-flat’ 就是充气。

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11. Employment and Unemployment | 就业与失业

Employment means having paid work; unemployment is the state of actively seeking work but unable to find it. The unemployment rate measures the percentage of the labour force that is jobless.

就业指有带薪工作；失业指正在积极寻找工作但找不到的状态。失业率衡量劳动力中没有工作的人口百分比。

Types of unemployment include structural (skills mismatch), cyclical (due to economic downturn), and frictional (between jobs). Economists consider full employment when only frictional and some structural unemployment remain.

失业类型包括结构性失业（技能不匹配）、周期性失业（经济衰退导致）和摩擦性失业（换工作期间）。经济学家认为，仅存在摩擦性和部分结构性失业时，即为充分就业。

Memory trick: Unemployment ‘U’ curve — U for ‘Unlucky’ when economy is down. Remember the three types as ‘S-C-F’ — ‘Silly Cat Fights’.

记忆技巧：失业的 ‘U’ 形——经济下行时的不幸。三种类型记作 ‘S-C-F’：结构、周期、摩擦——联想“傻猫打架”。

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12. International Trade | 国际贸易

International trade is the exchange of goods and services across borders. Exports are goods sold abroad; imports are goods bought from abroad. A trade surplus occurs when exports exceed imports; a trade deficit is the opposite.

国际贸易是跨越国境的商品与服务交换。出口是卖到国外的商品；进口是从国外购买的商品。贸易顺差是出口超过进口；贸易逆差则相反。

Countries trade to obtain resources they lack and to benefit from specialisation. Comparative advantage means producing goods at a lower opportunity cost than trading partners.

各国进行贸易以获取自身缺乏的资源，并从专业化中获益。比较优势指以低于贸易伙伴的机会成本生产商品。

Memory trick: Exports ‘exit’ the country; Imports ‘come in’. Surplus = ‘Super plus’, deficit = ‘deaf-i-cit’ can’t hear the cash coming in. Also, ‘Trade is a two-way street’.

记忆技巧：出口 (Exports) ‘exit’ 离开；进口 (Imports) ‘come in’ 进来。顺差 ‘Super plus’，逆差 ‘deaf-i-cit’ 听不到钱进来。贸易就是双向车道。

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Published by TutorHao | Economics Revision Series | aleveler.com

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