📚 Year 10 Eduqas Economics: Core Knowledge Summary | Year 10 Eduqas 经济：核心知识点梳理
As you progress through Year 10 Economics on the Eduqas specification, you will explore how individuals, businesses and governments make decisions in a world of limited resources. From the basic economic problem to demand and supply, elasticity, market failure and the role of government, these core topics build a strong foundation for understanding how an economy works. This article brings together the essential knowledge points you need to master, with clear explanations in English and Chinese to support bilingual learners and exam revision.
在 Year 10 的 Eduqas 经济学课程中，你将探索个人、企业和政府如何在资源有限的世界中做出决策。从基本经济问题到需求与供给、弹性、市场失灵以及政府的作用，这些核心主题为你理解经济运行方式打下坚实基础。本文汇总了你必须掌握的关键知识点，并配以中英双语清晰讲解，方便双语学习者备考复习。
1. The Basic Economic Problem | 基本经济问题
Economics begins with the fundamental concept of scarcity – the idea that human wants are unlimited while the resources needed to satisfy them are limited. Because we cannot have everything we desire, we are forced to make choices. These choices involve trade-offs, where selecting one option means giving up the next best alternative. The value of that forgone alternative is called opportunity cost.
经济学始于稀缺性这一基本概念——人类的欲望是无限的，但满足这些欲望所需的资源却是有限的。正因为我们无法拥有一切，就不得不做出选择。这些选择涉及权衡取舍，选择一种方案意味着放弃次优的替代方案。那个被放弃的替代方案的价值就是机会成本。
For example, if a government decides to spend £10 million on building a new hospital, the opportunity cost might be the new school it could have built instead. Understanding scarcity, choice and opportunity cost helps students analyse why economic agents – consumers, firms and governments – behave the way they do.
例如，如果政府决定花费1000万英镑建造一所新医院，那么机会成本可能就是原本可以建成的学校。理解稀缺性、选择和机会成本有助于学生分析消费者、企业和政府等经济主体的行为原因。
2. Factors of Production | 生产要素
Resources used to produce goods and services are classified into four factors of production: land, labour, capital and enterprise. Land includes all natural resources such as oil, water and land itself. Labour refers to the human effort, both physical and mental, involved in production. Capital is man-made equipment and buildings used to make other goods, like machinery and factories. Enterprise is the willingness and ability to take risks to combine the other factors and bring a product to market, usually associated with entrepreneurs.
用于生产商品和服务的资源被分为四种生产要素：土地、劳动力、资本和企业家才能。土地包括所有自然资源，如石油、水和土地本身。劳动力指生产过程中投入的体力和脑力劳动。资本是用于生产其他商品的人造设备和建筑，如机器和厂房。企业家才能则指承担风险、组合其他要素并将产品推向市场的意愿和能力，通常与创业者联系在一起。
The rewards for each factor are rent for land, wages for labour, interest for capital and profit for enterprise. Knowing these factors and their payments is essential for understanding production, costs and income distribution within an economy.
各要素的收入回报分别为：土地的租金、劳动力的工资、资本的利息和企业家才能的利润。了解这些要素及其报酬对于理解生产、成本和收入分配至关重要。
3. The Market System | 市场体系
Every economy must answer three fundamental questions: what to produce, how to produce, and for whom to produce. In a market economy, these decisions are made primarily through the price mechanism, where the forces of demand and supply interact. Consumers signal their preferences through their spending, producers respond by allocating resources to the most profitable goods, and goods are distributed to those who can afford them.
每个经济体都必须回答三个基本问题：生产什么、如何生产以及为谁生产。在市场经济中，这些决策主要通过价格机制完成，即需求与供给力量的相互作用。消费者通过消费支出传达偏好，生产者据此将资源配置到最有利可图的商品上，而商品则分配给有能力购买的人。
By contrast, a planned economy relies on government decisions to allocate resources. Most real-world economies are mixed, blending market signals with government intervention. Eduqas students need to appreciate the strengths and weaknesses of different economic systems and the role of the price mechanism in allocating scarce resources.
相比之下，计划经济依赖政府决策来配置资源。现实世界中的大多数经济体是混合经济，融合了市场信号与政府干预。Eduqas 的学生需要理解不同经济体系的优缺点，以及价格机制在配置稀缺资源中的作用。
4. Demand | 需求
Demand refers to the willingness and ability of consumers to purchase a good or service at various prices over a given period of time. The law of demand states that, all else being equal, as the price of a good rises, the quantity demanded falls, resulting in a downward-sloping demand curve. The relationship is driven by diminishing marginal utility, income effects and substitution effects.
需求是指消费者在不同价格水平下愿意并且能够购买某种商品或服务的数量。需求定律指出，在其他条件不变时，商品价格上升，需求量下降，因而需求曲线向右下方倾斜。这种关系由边际效用递减、收入效应和替代效应共同驱动。
Movements along the demand curve are caused solely by a change in the good's own price. Shifts of the demand curve, however, are caused by factors other than price, such as changes in income, tastes, the price of related goods (substitutes and complements), population size and expectations about the future. A rightward shift represents an increase in demand, while a leftward shift shows a decrease.
需求量沿需求曲线的变动仅由商品自身价格变化引起。而需求曲线的平移则由价格以外的因素导致，例如收入变化、偏好、相关商品（替代品和互补品）价格、人口规模以及未来预期。需求曲线右移表示需求增加，左移表示需求减少。
5. Supply | 供给
Supply is the quantity of a good or service that producers are willing and able to offer for sale at various prices over a period of time. The law of supply states that, ceteris paribus, as price rises, the quantity supplied increases, giving an upward-sloping supply curve. This reflects the profit incentive: higher prices make production more profitable and attract new firms into the market.
供给是指生产者在不同价格水平下愿意并能够提供的商品数量。供给定律指出，在其他条件不变的情况下，价格越高，供给量越大，因此供给曲线向右上方倾斜。这反映了利润激励：高价使生产更有利可图，并吸引新企业进入市场。
As with demand, a change in the good's own price causes a movement along the supply curve. A shift in the supply curve occurs when other determinants change, such as costs of production, technology, taxes and subsidies, the number of sellers, and external shocks like weather. An increase in supply shifts the curve to the right; a decrease shifts it to the left.
与需求类似，商品自身价格变化导致供给量沿曲线移动。供给曲线的平移则源于其他决定因素的变化，例如生产成本、技术、税收与补贴、卖方数量以及天气等外部冲击。供给增加使曲线右移；供给减少使曲线左移。
6. Price Determination and Equilibrium | 价格决定与均衡
Market equilibrium occurs when the quantity demanded equals the quantity supplied at a particular price, leaving no tendency for change. At any price above equilibrium, excess supply (a surplus) puts downward pressure on price. At any price below equilibrium, excess demand (a shortage) pushes prices upward. The interaction of demand and supply thus guides the market towards equilibrium.
市场均衡发生在需求量等于供给量的价格水平上，此时没有内在变动趋势。在高于均衡价格时，超额供给（盈余）会对价格形成下行压力。在低于均衡价格时，超额需求（短缺）会推动价格上升。由此可见，需求与供给的相互作用引导市场走向均衡。
Changes in demand or supply shift the curves and create a new equilibrium price and quantity. For instance, an increase in demand raises both equilibrium price and quantity, while an increase in supply lowers equilibrium price but raises equilibrium quantity. Being able to analyse these shifts and predict outcomes is a core skill for Eduqas exam questions.
需求或供给的变化会使曲线平移，从而形成新的均衡价格与数量。例如，需求增加会同时提高均衡价格和数量，而供给增加则会降低均衡价格但提高均衡数量。能够分析这些变动并预测结果是应对Eduqas考试题目的核心技能。
7. Price Elasticity of Demand (PED) | 需求价格弹性
Price elasticity of demand measures the responsiveness of quantity demanded to a change in price. It is calculated using the formula:
PED = %Δ Quantity Demanded ÷ %Δ Price
需求价格弹性衡量的是需求量对价格变化的反应程度。计算公式为：
PED = 需求量变化百分比 ÷ 价格变化百分比
The numerical value of PED, ignoring the negative sign, allows us to classify demand as elastic (greater than 1), inelastic (less than 1), unitary (equal to 1), perfectly elastic (infinity) or perfectly inelastic (zero). The main determinants include the availability of substitutes, the degree of necessity, the proportion of income spent on the good, and the time period considered.
PED 的绝对数值（忽略负号）可将需求分类为富有弹性（大于1）、缺乏弹性（小于1）、单位弹性（等于1）、完全弹性（无穷大）或完全无弹性（0）。主要影响因素包括替代品的可得性、商品的必需程度、支出占收入的比例以及所考察的时间范围。
| PED Value | Classification |
|---|---|
| > 1 | Price elastic |
| < 1 | Price inelastic |
| = 1 | Unitary elastic |
| Infinity | Perfectly elastic |
| 0 | Perfectly inelastic |
Businesses use PED to predict the effect of price changes on total revenue. If demand is elastic, a price cut raises total revenue; if demand is inelastic, a price rise increases total revenue. This insight is vital for pricing strategy and tax policy analysis.
企业利用 PED 预测价格变动对总收入的影响。若需求富有弹性，降价会提高总收入；若需求缺乏弹性，提价会提高总收入。这一洞察对于定价策略和税收政策分析至关重要。
8. Price Elasticity of Supply (PES) | 供给价格弹性
Price elasticity of supply measures how responsive quantity supplied is to a change in price. The formula is:
PES = %Δ Quantity Supplied ÷ %Δ Price
供给价格弹性衡量供给量对价格变化的反应程度。公式为：
PES = 供给量变化百分比 ÷ 价格变化百分比
ectly elastic or perfectly inelastic. Key determinants include the time period, the flexibility of the production process, the availability of spare capacity, the ease of storing stocks, and the mobility of factors of production. In the short run, supply tends to be more inelastic because firms cannot easily expand output; in the long run, supply becomes more elastic.
供给可以富有弹性（PES > 1）、缺乏弹性（PES < 1）、单位弹性（PES = 1）、完全弹性或完全无弹性。主要决定因素包括时间周期、生产过程的灵活性、闲置产能的可获得性、储存库存的难易程度以及生产要素的流动性。在短期内，供给往往缺乏弹性，因为企业难以迅速扩张产量；长期中供给弹性会增大。
9. Market Failure | 市场失灵
Market failure occurs when the free market, left to itself, fails to allocate resources efficiently, resulting in a net welfare loss to society. Common types of market failure include negative externalities (e.g. pollution from a factory imposing costs on third parties), positive externalities (e.g. education providing benefits beyond the individual), public goods (which are non-rival and non-excludable, leading to free-riding), and information asymmetry (where one party knows more than the other).
市场失灵是指自由市场自行运行时无法有效配置资源，从而导致社会净福利损失。常见的市场失灵类型包括负外部性（如工厂污染给第三方带来成本）、正外部性（如教育给他人带来额外好处）、公共物品（具有非竞争性和非排他性，导致“搭便车”问题）以及信息不对称（一方比另一方掌握更多信息）。
Merit goods, such as healthcare and education, are under-provided and under-consumed in a free market, while demerit goods like tobacco and alcohol tend to be over-consumed. Understanding these failures helps explain why governments often need to step in to improve social welfare.
有益品（如医疗和教育）在自由市场中往往供给和消费不足，而有害品（如烟草和酒精）则被过度消费。理解这些失灵有助于解释为何政府常常需要介入以改善社会福利。
10. Government Intervention | 政府干预
To correct market failure, governments can use a variety of policy instruments. Indirect taxation, for instance, imposes a tax on goods with negative externalities, increasing their price and reducing consumption. Subsidies lower the production cost of goods with positive externalities, encouraging their output and consumption. Regulation sets legal limits, such as emissions standards, to directly control harmful activities.
为了纠正市场失灵，政府可以采用多种政策工具。例如，间接税对有负外部性的商品征税，提高其价格从而减少消费。补贴则降低具有正外部性商品的生产成本，鼓励其产出和消费。法规监管通过设定排放标准等法律限制直接控制有害活动。
In addition, governments provide public goods directly because the private sector would not supply them profitably. Price controls, such as maximum and minimum prices, can also be used to protect consumers or producers, though they can lead to unintended consequences like shortages or surpluses. Students should be able to evaluate the effectiveness, costs and benefits of each intervention.
此外，政府直接提供公共物品，因为私营部门无法从中获利。最高限价和最低限价等价格管制也可用来保护消费者或生产者，尽管它们可能导致短缺或过剩等意想不到的后果。学生应能评价每种干预措施的有效性、成本与收益。
11. The Labour Market | 劳动力市场
The labour market, where workers sell their services and employers buy labour, is determined by the demand for labour (derived demand from the goods and services workers produce) and the supply of labour (influenced by factors such as wages, working conditions, qualifications, and leisure preferences). The equilibrium wage is set where labour demand equals labour supply.
劳动力市场是劳动者出卖服务、雇主购买劳动的地方，其状况由劳动力需求（派生自工人生产的商品与服务）和劳动力供给（受工资、工作条件、资质、闲暇偏好等因素影响）决定。均衡工资在劳动力需求等于供给之处确定。
Real-world labour markets are often imperfect, with factors such as trade unions, monopsony employers and government intervention affecting wages and employment. Changes in demand for end products, technology, minimum wage laws and migration can all shift the equilibrium. Analysing these influences helps students understand wage differentials and unemployment.
现实中的劳动力市场往往是不完全竞争的，工会、买方垄断雇主和政府干预等因素会影响工资和就业。终端产品需求变化、技术变革、最低工资法规和移民都会改变均衡。分析这些影响有助于学生理解工资差异和失业现象。
12. The Role of Financial Markets | 金融市场的作用
Financial markets channel funds from savers (households) to borrowers (firms and governments), enabling investment, consumption smoothing and economic growth. Key financial institutions include banks, building societies, insurance companies and the stock exchange. The Bank of England, as the central bank, plays a critical role in maintaining monetary stability, issuing currency and overseeing the financial system.
金融市场将资金从储户（家庭）引导至借款者（企业和政府），从而促成投资、平滑消费并推动经济增长。重要的金融机构包括银行、建房互助协会、保险公司和证券交易所。作为中央银行的英格兰银行在维护货币稳定、发行货币和监管金融体系方面发挥着关键作用。
Money itself serves as a medium of exchange, a store of value, a unit of account and a standard of deferred payment. Understanding these functions, along with the role of interest rates in balancing saving and investment, provides a foundation for macroeconomic analysis, which students will build upon in Year 11.
货币本身充当交换媒介、价值贮藏、计价单位和延期支付标准。理解这些功能以及利率在平衡储蓄与投资中的作用，为学生在 Year 11 进一步学习宏观经济分析打下基础。
Published by TutorHao | Economics Revision Series | aleveler.com
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