📚 Year 11 CCEA Economics: Core Knowledge Points Review | CCEA 11年级经济核心知识点梳理
Welcome to your essential revision guide for Year 11 CCEA Economics. This article breaks down the core knowledge points in both microeconomics and macroeconomics, providing definitions, examples, and key concepts to help you succeed in your exams. Let’s navigate the fundamental ideas that shape our understanding of the economy.
欢迎来到 CCEA 11年级经济学的核心复习指南。本文梳理了微观与宏观经济学中的关键知识点，提供定义、示例和重要概念，助力你在考试中取得成功。让我们一起来探索塑造经济理解的基本思想。
1. The Basic Economic Problem | 基本经济问题
Scarcity is the fundamental economic problem that arises because resources are limited while human wants are infinite. This forces individuals, firms, and governments to make choices about how to allocate scarce resources.
稀缺性是根本的经济问题，源于资源有限而人的欲望无限。这迫使个人、企业和政府就如何分配稀缺资源做出选择。
Because of scarcity, we must answer three key questions: What to produce? How to produce? For whom to produce? These decisions are at the heart of every economic system.
由于稀缺性，我们必须回答三个关键问题：生产什么？如何生产？为谁生产？这些决策是每一种经济制度的核心。
Economic goods are scarce and have an opportunity cost, while free goods are abundant and have no opportunity cost (e.g., air). Most goods we encounter are economic goods.
经济物品具有稀缺性和机会成本，而免费物品（如空气）充裕且没有机会成本。我们遇到的大多数物品都是经济物品。
2. Factors of Production | 生产要素
The four factors of production are land, labour, capital, and enterprise. Land includes all natural resources; labour is the human effort; capital refers to man-made goods used in production; and enterprise is the ability to organise the other factors and take risks.
四种生产要素是土地、劳动力、资本和企业才能。土地包括所有自然资源；劳动力是人的努力；资本指用于生产的制成品；企业才能是组织其他要素并承担风险的能力。
Each factor earns a reward: land earns rent, labour earns wages, capital earns interest, and enterprise earns profit. These rewards are the incomes of the factor owners.
每种要素获得相应的报酬：土地获得地租，劳动力获得工资，资本获得利息，企业才能获得利润。这些报酬是要素所有者的收入。
Mobility of factors refers to how easily they can be moved between different uses. Labour may have geographical or occupational immobility, while capital can be mobile but might be specific to an industry.
要素的流动性指它们在不同用途之间转移的难易程度。劳动力可能存在地理或职业上的不流动性，而资本可以流动但可能专用于某一行业。
3. Opportunity Cost and Production Possibility Frontier | 机会成本与生产可能性边界
Opportunity cost is the value of the next best alternative forgone when a choice is made. It is a central concept in economics, highlighting the trade-offs inherent in decision-making.
机会成本是做出选择时所放弃的次优选项的价值。它是经济学的核心概念，突显了决策中固有的权衡取舍。
The Production Possibility Frontier (PPF) shows the maximum combinations of two goods an economy can produce with existing resources and technology. Points on the curve represent efficiency, inside the curve represent inefficiency or unemployment, and outside the curve are unattainable with current resources.
生产可能性边界（PPF）显示了一个经济体利用现有资源和技术能够生产的两种商品的最大组合。曲线上的点表示有效率，曲线内部的点表示无效率或失业，曲线外的点在当前资源下无法实现。
Economic growth can shift the PPF outward, allowing more goods to be produced. This can result from an increase in the quantity or quality of resources. The shape of the PPF can be concave, reflecting increasing opportunity cost, or linear, for constant opportunity cost.
经济增长可以将PPF向外推移，能够生产更多商品。这可能是由于资源数量或质量的提高。PPF的形状可以是凹形的，反映机会成本递增；也可以是直线，表示机会成本不变。
4. Markets and Demand | 市场与需求
A market is any place or mechanism where buyers and sellers meet to exchange goods or services. Markets allocate resources through the price mechanism.
市场是买卖双方聚集交换商品或服务的任何场所或机制。市场通过价格机制配置资源。
Demand is the quantity of a good or service consumers are willing and able to buy at various prices over a period of time. The law of demand states that, ceteris paribus, as price falls, quantity demanded rises, and vice versa. This inverse relationship is shown by a downward-sloping demand curve.
需求是指在一段时间内，消费者愿意并能够以不同价格购买的商品或服务的数量。需求定律指出，在其他条件不变时，价格下降，需求量上升，反之亦然。这种反向关系表现为向下倾斜的需求曲线。
Factors that can shift the demand curve (conditions of demand) include changes in income, tastes and preferences, prices of substitutes and complements, population size, and expectations. A shift to the right indicates an increase in demand at every price.
能够引起需求曲线移动的因素（需求条件）包括收入变化、偏好、替代品和互补品价格、人口规模和预期。曲线向右移动表示每个价格水平上的需求增加。
5. Supply and Market Equilibrium | 供给与市场均衡
Supply is the quantity of a good or service producers are willing and able to sell at various prices over a period of time. The law of supply states that, ceteris paribus, as price rises, quantity supplied rises, leading to an upward-sloping supply curve.
供给是一段时间内，生产者愿意并能够以不同价格出售的商品或服务的数量。供给定律指出，在其他条件不变时，价格上升，供给量上升，供给曲线向上倾斜。
Factors shifting the supply curve include changes in costs of production, technology, indirect taxes and subsidies, number of sellers, weather (for agricultural goods), and expectations. A rightward shift means an increase in supply.
供给曲线移动的因素包括生产成本变化、技术、间接税和补贴、卖方数量、天气（农产品）和预期。向右移动表示供给增加。
Market equilibrium occurs where demand equals supply, determining the equilibrium price and quantity. If price is above equilibrium, a surplus exists, pushing price down. If below, a shortage emerges, pushing price up. The market tends to return to equilibrium through the price mechanism.
市场均衡出现在需求等于供给时，决定了均衡价格和数量。若价格高于均衡，存在过剩，推动价格下降；若低于均衡，出现短缺，推动价格上升。市场通过价格机制趋于恢复均衡。
6. Price Elasticity of Demand and Supply | 需求与供给的价格弹性
Price elasticity of demand (PED) measures the responsiveness of quantity demanded to a change in price. The formula is:
PED = %Δ Quantity Demanded ÷ %Δ Price
需求价格弹性（PED）衡量需求量对价格变化的反应程度。计算公式为：
PED = 需求量变动百分比 ÷ 价格变动百分比
ctors influencing PED include availability of substitutes, necessity vs luxury, proportion of income spent, and time period.
如果 PED 的绝对值大于1，需求富有弹性（数量变化大于价格变化）。小于1则缺乏弹性。等于1为单位弹性。影响 PED 的因素包括替代品的可得性、必需品或奢侈品、支出占收入的比例和时间周期。
Price elasticity of supply (PES) measures responsiveness of quantity supplied to price changes. The formula is:
PES = %Δ Quantity Supplied ÷ %Δ Price
供给价格弹性（PES）衡量供给量对价格变化的反应程度。计算公式为：
PES = 供给量变动百分比 ÷ 价格变动百分比
Supply is elastic if PES > 1, inelastic if PES < 1. Key determinants are production time period, availability of spare capacity, and ease of storing stock.
PES>1富有弹性，<1缺乏弹性。关键决定因素包括生产时间段、闲置产能的可获得性和储存的容易程度。
7. Market Failure | 市场失灵
Market failure occurs when the free market fails to allocate resources efficiently, leading to a net welfare loss. Common causes include externalities, public goods, information gaps, and market power.
市场失灵指自由市场未能有效配置资源，导致净福利损失。常见原因包括外部性、公共物品、信息不对称和市场势力。
Externalities are spillover effects on third parties not reflected in prices. Negative externalities (e.g., pollution) cause overproduction, while positive externalities (e.g., education) cause underproduction. The social optimum differs from the private optimum.
外部性是对第三方产生的、未在价格中反映的溢出效应。负外部性（如污染）导致过度生产，正外部性（如教育）导致生产不足。社会最优不同于私人最优。
Public goods are non-excludable and non-rival, leading to the free-rider problem. Examples include street lighting and national defence. The private market may fail to provide these, requiring government provision.
公共物品具有非排他性和非竞争性，导致搭便车问题。例如路灯和国防。私人市场可能无法提供这些物品，需要政府提供。
Imperfect information can also lead to market failure, as consumers or producers may not make optimal decisions. Moral hazard and adverse selection are examples of information problems.
信息不完全也会导致市场失灵，因为消费者或生产者可能无法做出最优决策。道德风险和逆向选择是信息问题的例子。
8. Government Intervention | 政府干预
Governments intervene in markets to correct market failures and achieve a more efficient or equitable outcome. Methods include indirect taxes, subsidies, price controls, regulation, and direct provision.
政府干预市场以纠正市场失灵，实现更高效或更公平的结果。方法包括间接税、补贴、价格管制、监管和直接提供。
An indirect tax (e.g., on cigarettes) increases costs, shifting supply left and reducing quantity. It can internalise the negative externality if set equal to the external cost. A subsidy shifts supply right, lowering price and increasing quantity, often used for goods with positive externalities like renewable energy.
间接税（如对香烟征税）增加成本，使供给曲线左移，减少数量。若设定等于外部成本，可内部化负外部性。补贴使供给曲线右移，降低价格、增加数量，常用于具有正外部性的商品，如可再生能源。
Maximum and minimum prices (price ceilings and floors) can be imposed, but may create shortages or surpluses. Regulations, such as banning harmful products or setting emissions standards, directly control activities. Governments may also provide information or public goods directly.
最高和最低限价（价格天花板和地板）可能被实施，但可能造成短缺或过剩。监管措施，如禁止有害产品或设定排放标准，直接控制活动。政府还可以直接提供信息或公共物品。
9. Macroeconomic Objectives | 宏观经济目标
The main macroeconomic objectives are: sustainable economic growth, low and stable inflation, low unemployment, and a satisfactory balance of payments on current account. Governments also aim for equitable distribution of income and environmental sustainability.
主要的宏观经济目标是：可持续的经济增长、低而稳定的通胀、低失业率以及满意的经常账户国际收支。政府还追求收入公平分配和环境可持续性。
Economic growth is measured by the percentage increase in real GDP. Inflation is measured by the Consumer Price Index (CPI) or Retail Price Index (RPI). Unemployment is measured by the claimant count or labour force survey. The balance of payments records transactions between a country and the rest of the world.
经济增长通过实际GDP的百分比增长来衡量。通货膨胀通过消费者价格指数（
Published by TutorHao | Year 11 Economics Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图