Year 11 Eduqas Economics: Core Knowledge Review | Year 11 Eduqas 经济：核心知识点梳理

📚 Year 11 Eduqas Economics: Core Knowledge Review | Year 11 Eduqas 经济：核心知识点梳理

Welcome to this comprehensive review of the essential topics for Year 11 Eduqas Economics. Whether you are preparing for your final GCSE examinations or consolidating your understanding throughout the course, this guide outlines the key concepts you need to master. Covering both microeconomic fundamentals—such as scarcity, demand and supply, and market failure—and macroeconomic objectives like growth, unemployment, and inflation, the following sections provide paired English and Chinese explanations to reinforce your learning. Use this resource to test your recall, identify areas for further study, and build confidence ahead of your assessments.

欢迎阅读这份 Year 11 Eduqas 经济学的核心知识点梳理。无论你是在准备 GCSE 最终考试，还是在课程过程中巩固理解，本文都将带你回顾需要掌握的关键概念。内容涵盖微观经济学基础（如稀缺性、需求与供给、市场失灵）以及宏观经济学目标（如经济增长、失业和通货膨胀），以下各部分均提供中英双语对照解释，帮助强化记忆。你可以利用这份资料自我检测、找出薄弱环节，并在考前建立信心。

1. The Basic Economic Problem | 基本经济问题

The fundamental economic problem arises because resources are scarce while human wants are unlimited. Scarcity forces individuals, businesses, and governments to make choices, and every choice involves an opportunity cost—the next best alternative forgone. Economists use the production possibility frontier (PPF) to illustrate the maximum potential output of two goods or services achievable with full and efficient use of existing resources. A movement along the PPF shows opportunity cost; an outward shift represents economic growth due to increased resources or improved technology.

基本经济问题源于资源的稀缺性与人类欲望的无限性。稀缺性迫使个人、企业和政府做出选择，而每个选择都涉及机会成本——即放弃的次优选择。经济学家用生产可能性边界（PPF）来展示在资源被充分有效利用时能获得的最大产出。沿 PPF 的移动表示机会成本；整个边界向外移动则代表因资源增加或技术进步带来的经济增长。

2. Demand and Supply | 需求与供给

Demand is the quantity of a good or service that consumers are willing and able to buy at various prices over a given period. The law of demand states that, ceteris paribus, as price rises, quantity demanded falls, resulting in a downward‑sloping demand curve. Factors that shift the entire demand curve include changes in income, tastes, the prices of substitutes and complements, and population. In contrast, supply reflects producers’ willingness and ability to sell; the law of supply indicates that higher prices typically lead to a greater quantity supplied, giving an upward‑sloping supply curve. Shifts in supply are caused by changes in production costs, technology, taxes, subsidies, and the number of sellers.

需求是消费者在一定时期内愿意且能够购买的商品或服务数量。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，因此需求曲线向右下方倾斜。能够使整条需求曲线移动的因素包括收入变化、偏好、替代品和互补品的价格以及人口数量。供给则反映生产者的销售意愿和能力；供给定律表明，价格越高，供给量通常越大，供给曲线向右上方倾斜。引起供给曲线移动的因素有生产成本变化、技术水平、税收、补贴以及卖者数量。

3. Price Elasticity of Demand | 需求的价格弹性

Price elasticity of demand (PED) measures how responsive quantity demanded is to a change in price. It is calculated as:

PED = percentage change in quantity demanded ÷ percentage change in price

If PED > 1, demand is price elastic (consumers are sensitive to price changes); if PED < 1, demand is price inelastic. Unitary elasticity (PED = 1) means total revenue stays constant when price changes. Knowledge of PED helps businesses set prices to maximise total revenue—raising price when demand is inelastic and lowering price when demand is elastic. Determinants of PED include the availability of substitutes, whether the good is a necessity or luxury, the proportion of income spent, and the time period considered.

需求的价格弹性（PED）衡量需求量对价格变动的反应程度。计算公式如下：

PED = 需求量变动的百分比 ÷ 价格变动的百分比

当 PED > 1 时，需求富有弹性（消费者对价格变动敏感）；PED < 1 则需求缺乏弹性。单位弹性（PED = 1）意味着价格变动时总收益不变。企业利用 PED 来定价以实现总收益最大化——当需求缺乏弹性时提高价格，当需求富有弹性时降低价格。影响 PED 的因素包括替代品的可获得性、商品是必需品还是奢侈品、支出占收入的比例，以及所考虑的时间范围。

4. Market Equilibrium and Disequilibrium | 市场均衡与非均衡

Market equilibrium occurs where the quantity demanded equals the quantity supplied at a given price; there is no tendency for price to change. Graphically, this is the intersection of the demand and supply curves. If the market price is set above equilibrium, a surplus (excess supply) emerges, putting downward pressure on price. When the price is below equilibrium, a shortage (excess demand) develops, pushing price upward. The price mechanism acts as an invisible hand, allocating resources by signalling to producers where demand is strongest and to consumers where goods are relatively scarce.

当需求量与供给量在某一价格下相等时，市场达到均衡，没有价格变动的趋势。在图中，这就是需求曲线与供给曲线的交点。若市场价格高于均衡价格，会出现过剩（超额供给），从而对价格产生下行压力。当价格低于均衡价格时，则产生短缺（超额需求），推动价格上升。价格机制如同“看不见的手”，通过向生产者传递需求最旺盛的信号、向消费者传递商品相对稀缺的信号，来实现资源配置。

5. Market Failure | 市场失灵

Market failure occurs when the free market, left alone, fails to allocate resources efficiently. Common causes include externalities (costs or benefits to third parties not reflected in prices), public goods (non‑excludable and non‑rival, such as street lighting), information asymmetry (where one party knows more than the other), and the abuse of monopoly power. Negative production externalities, like pollution, lead to overproduction because firms do not pay for the full social cost. Positive consumption externalities, such as vaccinations, lead to under‑consumption because individuals ignore the full social benefits.

市场失灵是指自由市场自身无法有效配置资源。常见原因包括外部性（未被价格反映的第三方成本或收益）、公共物品（如路灯，具有非排他性和非竞争性）、信息不对称（一方比另一方掌握更多信息），以及垄断权力的滥用。负生产外部性（如污染）会导致过度生产，因为企业没有承担全部社会成本。正消费外部性（如疫苗接种）则会导致消费不足，因为个人忽略了全部社会收益。

6. Government Intervention | 政府干预

To correct market failure, governments can use a range of interventions. Indirect taxes (e.g. a carbon tax) increase the cost of goods with negative externalities, reducing output toward the socially optimal level. Subsidies lower costs for goods with positive externalities, encouraging consumption. Regulation, such as legal limits on emissions, directly controls harmful activities. Governments may also provide information to reduce asymmetry, set maximum or minimum prices, or directly produce public goods. However, intervention can bring government failure if the costs outweigh the benefits or if policies create unintended distortions.

为纠正市场失灵，政府可以采取多种干预措施。间接税（如碳税）会提高具有负外部性商品的成本，使产量降至社会最优水平。补贴可以降低具有正外部性商品的成本，鼓励消费。法规（如排放法定上限）直接控制有害行为。政府还可以提供信息以减少不对称、设定最高或最低价格，或者直接提供公共物品。然而，如果干预成本超过收益，或政策造成意外扭曲，就可能出现政府失灵。

7. Macroeconomic Objectives | 宏观经济目标

Governments typically pursue four main macroeconomic objectives: stable and sustainable economic growth, low and stable unemployment, low and stable inflation, and a satisfactory balance of payments on the current account. Conflicting objectives can arise—for example, rapid growth may fuel inflation or worsen the trade balance. Policy‑makers use a mix of fiscal, monetary, and supply‑side policies to steer the economy toward these targets. Regular data on GDP, the consumer price index, employment figures, and trade statistics are used to assess performance.

政府通常追求四大宏观经济目标：稳定且可持续的经济增长、低而稳定的失业率、低而稳定的通货膨胀，以及令人满意的经常账户收支平衡。目标之间可能出现冲突——例如，快速经济增长可能引发通货膨胀或恶化贸易收支。决策者综合运用财政政策、货币政策和供给侧政策，引导经济朝这些目标靠近。定期的 GDP、消费者价格指数、就业数据和贸易统计数据被用来评估经济运行状况。

8. Economic Growth | 经济增长

Economic growth refers to an increase in the productive capacity of an economy, typically measured by the annual percentage change in real Gross Domestic Product (GDP). Short‑run growth can occur when underused resources are brought into production; long‑run growth requires an increase in the quantity or quality of factors of production, often illustrated by an outward shift of the PPF or an increase in aggregate supply. Benefits of growth include higher average living standards, more tax revenue, and greater employment. However, growth may also cause environmental degradation, resource depletion, and rising income inequality if gains are unevenly distributed.

经济增长指经济体生产能力的提升，通常用实际国内生产总值（GDP）的年百分比变化来衡量。短期的经济增长可能源于闲置资源被投入生产；长期增长则需要生产要素数量或质量的提高，通常表现为 PPF 向外移动或总供给增加。经济增长的好处包括平均生活水准提高、税收收入增加和就业扩大。然而，增长也可能带来环境恶化、资源耗竭，如果收益分配不均，还可能导致收入不平等加剧。

9. Unemployment | 失业

Unemployment counts those who are willing and able to work but cannot find a job. The two main measures in the UK are the Claimant Count and the Labour Force Survey. Types of unemployment include frictional (short‑term between jobs), structural (mismatch of skills or geography due to industry decline), cyclical (caused by a lack of aggregate demand in a recession), and seasonal. The costs of unemployment are both economic—lost output and lower tax revenue—and social, such as increased poverty, loss of self‑esteem, and strain on government finances through higher benefit payments.

失业统计的是那些有工作意愿和能力却找不到工作的人。英国的两大衡量指标是申领人数统计和劳动力调查。失业类型包括摩擦性失业（短期的工作转换期）、结构性失业（因产业衰落导致技能或地区不匹配）、周期性失业（经济衰退时总需求不足引起）和季节性失业。失业的成本既有经济上的——产出损失和税收减少，也有社会上的，如贫困加剧、自尊心受挫，以及因福利支出增加给政府财政带来的压力。

10. Inflation | 通货膨胀

Inflation is a sustained rise in the general price level, reducing the purchasing power of money. In the UK, the Consumer Prices Index (CPI) is the main measure. Demand‑pull inflation occurs when aggregate demand grows faster than aggregate supply, while cost‑push inflation results from rising production costs (e.g. higher wages or raw material prices). Moderate inflation can facilitate wage adjustments, but high or volatile inflation creates uncertainty, erodes savings, distorts spending decisions, and may harm international competitiveness. Central banks aim to keep inflation low and stable, often around a target of 2%.

通货膨胀是整体物价水平持续上涨的现象，会削弱货币的购买力。英国主要使用消费者价格指数（CPI）来衡量。需求拉动型通胀产生于总需求的增长快于总供给时；成本推动型通胀则源于生产成本的上升（例如工资或原材料价格上涨）。温和通胀有助于工资调整，但高通胀或波动剧烈的通胀会制造不确定性、侵蚀储蓄、扭曲支出决策，并可能损害国际竞争力。中央银行力求将通胀保持在低位且稳定，目标通常设在 2% 左右。

11. International Trade | 国际贸易

International trade allows countries to specialise in producing goods where they have a comparative advantage—the ability to produce a good at a lower opportunity cost than another nation. This specialisation can increase total world output and enable consumers to enjoy a wider variety of goods at lower prices. Free trade is promoted by the World Trade Organization (WTO). Despite the benefits, governments sometimes use protectionist measures such as tariffs (taxes on imports), quotas (limits on import quantities), subsidies to domestic producers, and non‑tariff barriers. Protectionism aims to shield infant industries, protect jobs, or improve a trade deficit, but it can lead to retaliation and higher prices for consumers.

国际贸易使各国能够专门生产其具有比较优势的商品——即以比另一国更低的机会成本生产某种商品的能力。这种专业化能增加全球总产出，让消费者以更低价格享受更多种类的商品。世界贸易组织（WTO）致力于推动自由贸易。尽管好处众多，政府有时仍会采取保护主义措施，如关税（对进口品征税）、配额（限制进口数量）、对国内生产者补贴和非关税壁垒。保护主义旨在保护新兴产业、就业或改善贸易逆差，但可能导致他国报复和消费者面临更高价格。

12. Fiscal and Monetary Policy | 财政与货币政策

Fiscal policy involves the government’s use of taxation and public spending to influence the economy. Expansionary fiscal policy—higher spending or lower taxes—can boost aggregate demand during a downturn, while contractionary fiscal policy can cool an overheating economy. The government’s budget position reflects the balance: a deficit when spending exceeds tax revenue, and a surplus when revenue exceeds spending. Monetary policy is operated by the central bank, primarily through adjusting the policy interest rate. Lower interest rates reduce the cost of borrowing and the reward for saving, encouraging consumption and investment; higher rates have the opposite effect. Both policies are key tools for managing the business cycle and achieving macroeconomic stability.

财政政策是政府通过税收和公共支出影响经济的手段。扩张性财政政策（增加支出或减税）可在经济低迷时刺激总需求；紧缩性财政政策则可为过热经济降温。政府的预算状况反映了收支平衡：支出超过税收收入时出现赤字，收入超过支出时出现盈余。货币政策由中央银行执行，主要通过调整政策利率来操作。降低利率会减少借款成本和储蓄回报，从而鼓励消费和投资；提高利率则效果相反。这两项政策都是管理经济周期、实现宏观经济稳定的关键工具。

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Published by TutorHao | Economics Revision Series | aleveler.com

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