📚 Year 10 Edexcel Economics: Core Knowledge Overview | Year 10 Edexcel 经济：核心知识点梳理
This comprehensive guide covers the essential topics for Year 10 students following the Edexcel GCSE Economics specification. It breaks down key microeconomic and macroeconomic concepts, definitions, and diagrams in a clear, paired English-Chinese format to support bilingual learning and revision.
本综合指南涵盖了学习 Edexcel GCSE 经济学课程 Year 10 学生的核心主题。它用清晰的英中对照形式分解了关键的微观与宏观经济概念、定义和图示，以支持双语学习与复习。
1. The Basic Economic Problem | 基本经济问题
Economics is about scarcity: resources are limited, but human wants are unlimited. This creates the need to make choices about what to produce, how to produce, and for whom to produce. The basic economic problem exists in every society.
经济学的核心是稀缺性：资源有限，而人类的欲望无限。这就需要对生产什么、如何生产以及为谁生产做出选择。基本经济问题存在于每一个社会之中。
The three key economic questions are: What goods and services should be produced? How should they be produced? Who should receive them? Different economic systems – market, command, and mixed – answer these questions differently.
三个关键的经济问题是：应该生产什么商品和服务？应该怎样生产它们？谁应该获得它们？不同的经济体系——市场经济、计划经济和混合经济——对这些问题的回答各不相同。
2. Factors of Production | 生产要素
Resources used to produce goods and services are categorised into the four factors of production: land, labour, capital, and enterprise. Land includes all natural resources. Labour is the human effort, both physical and mental.
用于生产商品和服务的资源分为四类生产要素：土地、劳动、资本和企业。土地包括所有的自然资源。劳动是人的努力，包括体力和脑力。
Capital refers to man-made resources used in production, such as machinery and factories. Enterprise is the willingness and ability to take risks and combine the other three factors to create output. The reward for land is rent, for labour is wages, for capital is interest, and for enterprise is profit.
资本是指用于生产的人造资源，比如机器和厂房。企业是指承担风险、组合其他三种要素以创造产出的意愿和能力。土地的报酬是地租，劳动的报酬是工资，资本的报酬是利息，企业的报酬是利润。
3. Opportunity Cost and PPF | 机会成本与生产可能性边界
Opportunity cost is the next best alternative given up when a choice is made. It is a fundamental concept because every decision involves a trade-off. Opportunity cost can be applied to consumers, producers, and governments.
机会成本是指做出选择时所放弃的次优替代方案。这是一个基本概念，因为每一项决策都涉及权衡取舍。机会成本适用于消费者、生产者和政府。
The production possibility frontier (PPF) shows the maximum possible output combinations of two goods with existing resources and technology. Points on the curve represent efficient production, inside the curve inefficient, and beyond the curve unattainable. Moving along the curve illustrates opportunity cost.
生产可能性边界（PPF）展示了在现有资源和技术条件下两种商品的最大可能产量组合。位于曲线上的点代表有效率的生产，曲线内的点代表无效率，曲线外的点则不可企及。沿着曲线移动体现了机会成本。
The PPF can shift outward due to economic growth, caused by an increase in the quantity or quality of resources, or technological progress. An inward shift occurs if resources decline.
由于经济增长，生产可能性边界可以向外移动，增长源于资源数量或质量的提高，或技术进步。如果资源减少，边界会向内移动。
4. Demand and Supply | 需求与供给
Demand is the quantity of a good or service consumers are willing and able to buy at a given price over a period of time. The law of demand states that as price rises, quantity demanded falls, ceteris paribus. A demand curve slopes downward.
需求是指在一段时间内，消费者愿意并能够在给定价格下购买的商品或服务的数量。需求定律指出，在其他条件不变的情况下，价格上升，需求量下降。需求曲线向下倾斜。
Factors that shift the demand curve include changes in income, tastes, prices of substitutes and complements, population, and advertising. A shift to the right is an increase in demand; a shift to the left is a decrease.
使需求曲线移动的因素包括收入变化、偏好变化、替代品和互补品价格变化、人口和广告。向右移动代表需求增加；向左移动代表需求减少。
Supply is the quantity producers are willing and able to sell at a given price. The law of supply states that as price rises, quantity supplied rises. The supply curve slopes upward. Shifts in supply are caused by changes in costs of production, technology, indirect taxes, subsidies, and external shocks.
供给是指生产者愿意并能够在给定价格下出售的数量。供给定律指出，价格上升，供给量上升。供给曲线向上倾斜。供给曲线的移动由生产成本、技术、间接税、补贴和外部冲击的变化引起。
5. 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 as: % change in quantity demanded ÷ % change in price. PED is usually negative, but the absolute value is used for analysis.
需求价格弹性衡量需求量对价格变化的反应程度。计算公式为：需求量变化百分比 ÷ 价格变化百分比。PED 通常为负值，但分析时常取绝对值。
= 1, demand is unit elastic. Factors affecting PED include availability of substitutes, necessity versus luxury, proportion of income spent, and time period.
如果 PED > 1，需求富有价格弹性；价格上升会减少总收益。如果 PED < 1，需求缺乏价格弹性；价格上升会增加总收益。如果 PED = 1，需求为单位弹性。影响 PED 的因素包括替代品的可用性、必需品与奢侈品、支出占收入的比例以及时间周期。
6. 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: % change in quantity supplied ÷ % change in price. PES is always positive due to the law of supply.
供给价格弹性衡量供给量对价格变化的反应程度。公式为：供给量变化百分比 ÷ 价格变化百分比。由于供给定律，PES 恒为正。
If PES > 1, supply is price elastic; producers can increase output easily. If PES < 1, supply is price inelastic; it is difficult to raise output. Determinants of PES include production time, availability of spare capacity, stock levels, and the complexity of the production process.
如果 PES > 1，供给富有价格弹性；生产者可以轻易增加产量。如果 PES < 1，供给缺乏价格弹性；提高产量较困难。PES 的决定因素包括生产时间、剩余产能的可用性、库存水平以及生产过程的复杂程度。
7. Market Equilibrium and Price Mechanism | 市场均衡与价格机制
Market equilibrium occurs where the quantity demanded equals the quantity supplied, with no tendency for change. The equilibrium price is also known as the market-clearing price. Disequilibrium results in excess demand (shortage) or excess supply (surplus).
市场均衡发生在需求量等于供给量的位置，此时没有变动的趋势。均衡价格也称为市场出清价格。不均衡会导致超额需求（短缺）或超额供给（过剩）。
The price mechanism performs three functions: signalling, rationing, and incentivising. When demand rises, the higher price signals producers to supply more, rations the good to those willing to pay, and incentivises firms to increase production. In a free market, the invisible hand allocates resources efficiently.
价格机制发挥三种功能：信号、配给和激励。当需求上升时，更高的价格向生产者发出增加供给的信号，将商品配给给愿意支付的人，并激励企业增加产量。在自由市场中，'看不见的手'有效地配置资源。
8. Market Failure | 市场失灵
Market failure occurs when the free market fails to allocate resources efficiently, leading to a net welfare loss. Types of market failure include externalities, public goods, information gaps, and monopoly power.
市场失灵是指自由市场未能有效配置资源，导致净福利损失。市场失灵的类型包括外部性、公共物品、信息不对称和垄断势力。
Externalities are costs or benefits that affect third parties not involved in the transaction. Negative externalities (e.g., pollution) lead to overproduction, while positive externalities (e.g., education) lead to underproduction. Public goods are non-excludable and non-rival, meaning the private sector underprovides them, such as street lighting and national defence.
外部性是指影响未参与交易的第三方的成本或收益。负外部性（如污染）导致过度生产，而正外部性（如教育）则导致生产不足。公共物品具有非排他性和非竞争性，意味着私营部门会供应不足，例如路灯和国防。
9. Government Intervention | 政府干预
To correct market failure, governments can use various policies: indirect taxes to reduce negative externalities, subsidies to encourage positive externalities, regulation and legislation, provision of public goods, and competition policy to break up monopolies.
为纠正市场失灵，政府可以使用多种政策：对负外部性征收间接税，对正外部性提供补贴，法规和立法，提供公共物品，以及实施打破垄断的竞争政策。
Indirect taxes increase production costs, shifting the supply curve leftwards, reducing quantity and raising price. Subsidies lower costs, shift supply rightwards, and increase consumption of merit goods. However, government intervention may also result in government failure if the costs outweigh the benefits.
间接税增加了生产成本，使供给曲线向左移动，减少产量并提高价格。补贴降低了成本，使供给曲线右移，增加对优质品的消费。然而，如果政府干预的成本超过收益，也可能导致政府失灵。
10. Macroeconomic Objectives | 宏观经济目标
Governments pursue key macroeconomic objectives: economic growth, low and stable inflation, low unemployment, and a favourable balance of payments on the current account. These objectives may conflict, e.g., rapid growth may cause higher inflation.
政府追求关键的宏观经济目标：经济增长、低且稳定的通货膨胀、低失业率以及经常账户的良好平衡。这些目标之间可能存在冲突，例如，快速增长可能导致更高的通货膨胀。
Additional government goals include income equality and environmental sustainability. The macroeconomic performance is measured by indicators such as GDP growth rate, CPI, unemployment rate, and current account balance.
政府的附加目标包括收入平等和环境可持续性。宏观经济表现通过 GDP 增长率、消费者物价指数（CPI）、失业率和经常账户余额等指标来衡量。
11. Economic Growth and Living Standards | 经济增长与生活水平
Economic growth is an increase in the productive capacity of the economy, measured by the percentage change in real GDP. Short-run growth uses spare capacity, while long-run growth shifts the PPF outward through investment, innovation, and improved education.
经济增长是指经济生产能力的提高，通常用实际 GDP 的百分比变化来衡量。短期增长利用了闲置产能，而长期增长则通过投资、创新和教育改善使生产可能性边界向外移动。
Higher growth can raise living standards, increase employment, and boost tax revenues for public services. However, it may also lead to inflation, environmental damage, and income inequality. Living standards are assessed using GDP per capita and broader measures like the Human Development Index (HDI).
更高的增长可以提高生活水平，增加就业，并增加用于公共服务的税收。然而，它也可能导致通货膨胀、环境破坏和收入不平等。生活水平通过人均 GDP 和更广泛的指标如人类发展指数（HDI）来评估。
12. Unemployment and Inflation | 失业与通货膨胀
Unemployment refers to people who are actively seeking work but cannot find a job. The main types are cyclical, structural, frictional, and seasonal. The unemployment rate is a key indicator of labour market health.
失业是指积极寻找工作但无法找到工作的人。主要类型包括周期性失业、结构性失业、摩擦性失业和季节性失业。失业率是劳动力市场健康状况的关键指标。
Inflation is a sustained rise in the general price level. It is measured by the Consumer Price Index (CPI). Demand-pull inflation is caused by excessive demand, while cost-push inflation arises from higher production costs. High inflation erodes purchasing power, distorts spending patterns, and can hurt economic stability.
通货膨胀是指总体价格水平的持续上升。它通过消费者物价指数（CPI）来衡量。需求拉动型通货膨胀由过度需求引起，而成本推动型通货膨胀源于生产成本上升。高通货膨胀侵蚀购买力，扭曲消费模式，并损害经济稳定。
The government uses monetary policy (interest rates, money supply) to control inflation and fiscal policy (taxation, government spending) to manage unemployment and growth. The balance between inflation and unemployment is often shown by the Phillips curve.
政府利用货币政策（利率、货币供应量）控制通货膨胀，利用财政政策（税收、政府支出）管理失业和增长。通货膨胀与失业之间的平衡通常通过菲利普斯曲线来展示。
Published by TutorHao | Economics Revision Series | aleveler.com
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