📚 IGCSE OCR Economics: End-of-Term Revision Checklist | IGCSE OCR 经济：期末复习提纲
A thorough revision plan is essential for success in IGCSE OCR Economics. This checklist breaks down the syllabus into manageable sections, covering both microeconomic and macroeconomic concepts, ensuring you can assess your understanding and target areas for improvement before the exam.
一份全面的复习计划对于在 IGCSE OCR 经济学考试中取得成功至关重要。本提纲将课程大纲分解为易于掌握的各个部分，涵盖了微观经济和宏观经济概念，确保你能够在考试前评估自己的理解并针对薄弱环节进行强化。
1. The Basic Economic Problem | 基本经济问题
The fundamental economic problem is scarcity: finite resources cannot satisfy infinite human wants. This forces every economy to answer three key questions – what to produce, how to produce, and for whom to produce.
基本的经济问题是稀缺性：有限的资源无法满足无限的人类欲望。这迫使每个经济体必须回答三个关键问题——生产什么、如何生产以及为谁生产。
Opportunity cost represents the next best alternative sacrificed when a choice is made. It is a cornerstone of economic decision-making and can be illustrated using a production possibility curve (PPC).
机会成本代表在做出一项选择时所放弃的次优替代品。它是经济决策的基石，可以通过生产可能性曲线 (PPC) 加以说明。
The four factors of production are land, labour, capital and enterprise. Each factor earns a reward: rent for land, wages for labour, interest for capital, and profit for enterprise.
四种生产要素包括土地、劳动、资本和企业家才能。每种要素都获得相应的报酬：土地获得租金，劳动获得工资，资本获得利息，企业家才能获得利润。
The PPC shows maximum combinations of two goods an economy can produce with full employment of resources. A point inside the curve indicates underutilised resources, while outward shifts represent economic growth.
PPC 展示了一个经济体在资源得到充分利用时所能生产的两种商品的最大组合。曲线内部的点表示资源利用不足，而整条曲线向外移动则代表经济增长。
2. 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 various prices over a given time period. The law of demand states that, ceteris paribus, price and quantity demanded are inversely related.
需求是指消费者在特定时期内、在不同价格水平上愿意并且能够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，价格与需求量呈反向关系。
A movement along the demand curve is caused by a change in the good's own price. A shift of the demand curve is caused by factors such as income, tastes, prices of substitutes and complements, population, and advertising.
沿着需求曲线的移动是由商品自身价格的变化引起的。需求曲线的位移则由收入、偏好、替代品和互补品的价格、人口以及广告等因素导致。
Supply is the quantity producers are willing and able to offer for sale at various prices. The law of supply indicates a positive relationship between price and quantity supplied. Supply shifts result from changes in production costs, technology, indirect taxes, subsidies, and the number of sellers.
供给是指生产者愿意并且能够以各种价格出售的商品或服务的数量。供给定律表明价格与供给量之间呈正向关系。供给曲线的位移源于生产成本、技术、间接税、补贴和卖者数量等因素的变化。
3. Elasticity | 弹性
nsiveness of quantity demanded to a change in price, calculated using the formula: PED = (%ΔQd) ÷ (%ΔP). Demand can be elastic (PED > 1), inelastic (PED < 1), or unit elastic (PED = 1).
需求的价格弹性 (PED) 衡量需求量对价格变化的反应程度，计算公式为：PED = (%ΔQd) ÷ (%ΔP)。需求可以是富有弹性 (PED > 1)、缺乏弹性 (PED < 1) 或单位弹性 (PED = 1)。
Income elasticity of demand (YED) relates changes in demand to changes in consumer income. Normal goods have a positive YED, while inferior goods have a negative YED. Necessities tend to have YED between 0 and 1, luxuries above 1.
需求的收入弹性 (YED) 将需求的变化与消费者收入的变化联系起来。正常商品具有正 YED，而低档商品具有负 YED。必需品的 YED 通常介于 0 和 1 之间，奢侈品的 YED 大于 1。
Price elasticity of supply (PES) measures the responsiveness of quantity supplied to price changes. Factors affecting PES include the time period, availability of spare capacity, stock levels, and the mobility of factors of production.
供给的价格弹性 (PES) 衡量供给量对价格变化的反应程度。影响 PES 的因素包括时间周期、闲置产能的可用性、库存水平以及生产要素的流动性。
4. Market Equilibrium and Price Mechanism | 市场均衡与价格机制
Market equilibrium occurs where quantity demanded equals quantity supplied. At this price, there is no shortage or surplus, and the market clears. The price mechanism allocates resources through the signals provided by prices.
市场均衡出现在需求量等于供给量的位置。在均衡价格下，没有短缺或过剩，市场出清。价格机制通过价格所提供的信号来配置资源。
When the price is above equilibrium, a surplus exists, pushing prices down. When the price is below equilibrium, a shortage develops, driving prices up. These automatic movements help restore equilibrium.
当价格高于均衡价格时，会出现过剩，促使价格下降。当价格低于均衡价格时，会出现短缺，推动价格上升。这些自发运动有助于恢复均衡。
The functions of the price mechanism are the signalling function (indicating where resources are needed), the incentive function (encouraging producers to enter profitable markets), and the rationing function (allocating scarce goods to those willing to pay).
价格机制的功能包括信号功能（指示资源需求的方向）、激励功能（鼓励生产者进入有利可图的市场）和配给功能（将稀缺商品分配给那些愿意支付的人）。
5. Market Failure and Government Intervention | 市场失灵与政府干预
Market failure occurs when the free market fails to allocate resources efficiently. Key causes include externalities, public goods, information failure, and monopoly power.
当自由市场未能有效配置资源时，就发生了市场失灵。主要原因包括外部性、公共物品、信息不对称和垄断势力。
Negative externalities arise when production or consumption imposes costs on third parties not involved in the transaction, leading to overproduction. Positive externalities generate benefits for third parties, resulting in underproduction.
负外部性出现在生产或消费给未参与交易的第三方带来成本的情况下，从而导致过度生产。正外部性则为第三方带来收益，导致生产不足。
Governments can intervene through taxation (to internalise negative externalities), subsidies (to encourage positive externalities), regulation, provision of public goods, and competition policy. All interventions should be evaluated for their effectiveness and unintended consequences.
政府可以通过征税（将负外部性内部化）、补贴（鼓励正外部性）、监管、提供公共物品以及竞争政策来进行干预。所有干预措施都应对其有效性和非预期后果进行评估。
6. Macroeconomic Objectives | 宏观经济目标
Governments typically pursue four main macroeconomic objectives: sustainable economic growth, low and stable inflation, low unemployment, and a satisfactory balance of payments position on the current account.
政府通常追求四个主要的宏观经济目标：可持续的经济增长、低而稳定的通货膨胀、低失业率以及国际收支经常项目的良好状况。
Conflicts can arise between these objectives. For example, policies to boost economic growth might worsen the current account deficit or increase inflation. Policymakers often face trade-offs.
这些目标之间可能会出现冲突。例如，刺激经济增长的政策可能会使经常项目赤字恶化或引发通货膨胀。政策制定者经常面临权衡取舍。
Other important objectives include an equitable distribution of income and environmental protection. These are increasingly integrated into macroeconomic policy frameworks.
其他重要目标包括收入的公平分配和环境保护。这些正越来越多地被纳入宏观经济政策框架。
7. Economic Growth and Development | 经济增长与发展
Economic growth is an increase in a country's real GDP over time. It is measured by the percentage change in real GDP. Potential growth depends on the quantity and quality of factors of production, and productivity improvements.
经济增长是指一国实际 GDP 随时间的增长。它通过实际 GDP 的百分比变化来衡量。潜在增长取决于生产要素的数量和质量，以及生产率的提高。
Economic development is a broader concept, encompassing improvements in living standards, health, education, and reduction in poverty. The Human Development Index (HDI) combines GDP per capita, life expectancy, and education indicators.
经济发展是一个更广泛的概念，包括生活水平的提高、医疗卫生和教育的改善以及贫困的减少。人类发展指数 (HDI) 综合了人均 GDP、预期寿命和教育指标。
Factors that constrain growth and development include lack of infrastructure, poor education and healthcare, political instability, corruption, and protectionist policies abroad. Trade can act as an engine for growth by expanding markets and encouraging specialisation.
限制增长与发展的因素包括基础设施匮乏、教育和医疗保健落后、政治不稳定、腐败以及国外的保护主义政策。贸易可以通过扩大市场和鼓励专业分工而成为增长的引擎。
8. International Trade and Globalisation | 国际贸易与全球化
Countries trade because of comparative advantage: they specialise in producing goods with a lower opportunity cost. This increases global output and allows consumers to benefit from a greater variety of goods at lower prices.
国家之间进行贸易是因为比较优势：它们专门生产机会成本较低的商品。这增加了全球总产出，并使消费者能够以更低的价格享受到更多种类的商品。
Protectionism uses tariffs, quotas, subsidies, and non-tariff barriers to shield domestic industries from foreign competition. Arguments for protection include protecting infant industries, safeguarding jobs, and preventing dumping.
保护主义通过关税、配额、补贴和非关税壁垒来保护本国产业免受外国竞争。支持保护主义的理由包括保护幼稚工业、保障就业和防止倾销。
Globalisation refers to the increasing integration of economies through trade, investment, technology, and labour flows. While it can drive growth and cultural exchange, it may also exacerbate inequality and cause structural unemployment in some regions.
全球化是指通过贸易、投资、技术和劳动力流动使各个经济体日益融合的过程。虽然它能推动经济增长和文化交流，但也可能加剧不平等，并在某些地区造成结构性失业。
9. Fiscal and Monetary Policy | 财政与货币政策
Fiscal policy involves government spending and taxation to influence aggregate demand. Expansionary fiscal policy (increasing spending or cutting taxes) aims to stimulate the economy, while contractionary policy cools it down.
财政政策涉及政府通过支出和税收来影响总需求。扩张性财政政策（增加支出或减税）旨在刺激经济，而紧缩性政策则是给经济降温。
Monetary policy uses interest rates and the money supply to manage economic activity. Central banks may raise interest rates to reduce inflationary pressure or lower them to encourage borrowing and investment during a recession.
货币政策利用利率和货币供应量来管理经济活动。中央银行可能会提高利率以减轻通货膨胀压力，或在经济衰退期间降低利率以鼓励借贷和投资。
The effectiveness of both policies depends on the economic context, time lags, and the responsiveness of consumption and investment. Supply‑side policies, such as education and training, improve productive capacity over the long term.
这两种政策的有效性取决于经济背景、时滞以及消费和投资的反应程度。教育和培训等供给侧政策则可以长期提高生产能力。
10. Unemployment and Labour Markets | 失业与劳动力市场
Unemployment occurs when people who are able and willing to work cannot find a job. The main types are frictional, structural, cyclical, and seasonal unemployment. Measured by the claimant count or labour force survey.
失业发生在有能力并愿意工作的人找不到工作之时。主要类型包括摩擦性失业、结构性失业、周期性失业和季节性失业。通过申领失业救济人数或劳动力调查进行衡量。
Cyclical unemployment is caused by a deficiency of aggregate demand, while structural unemployment results from a mismatch of skills and geographic immobility. Frictional unemployment is short term, as workers move between jobs.
周期性失业由总需求不足引起，而结构性失业则源于技能错配和地理流动性不足。摩擦性失业是短期的，因为工人在工作之间流动。
Consequences of unemployment include lost output, reduced tax revenue, increased government spending on benefits, and social costs such as poverty and reduced self-esteem.
失业的后果包括产出损失、税收收入减少、政府福利支出增加以及贫困和自尊心下降等社会成本。
11. Inflation | 通货膨胀
Inflation is a sustained increase in the general price level. It is most commonly measured by the Consumer Price Index (CPI), which tracks the price of a basket of goods and services bought by a typical household.
通货膨胀是指总体价格水平的持续上涨。最常用的衡量指标是消费者价格指数 (CPI)，它跟踪一个典型家庭所购买的一揽子商品和服务的价格。
Demand‑pull inflation occurs when aggregate demand exceeds aggregate supply at the full‑employment level. Cost‑push inflation results from rising production costs, such as wages or raw materials, being passed on to consumers.
需求拉动型通货膨胀发生在总需求超过充分就业水平下的总供给之时。成本推动型通货膨胀则源于生产成本（如工资或原材料）上升并转嫁给消费者。
High inflation reduces the purchasing power of money, creates uncertainty for investment, and can make exports less competitive. Deflation, a sustained fall in the price level, can also be harmful by encouraging consumers to delay purchases.
高通胀会降低货币购买力，给投资带来不确定性，并可能降低出口竞争力。通货紧缩，即价格水平的持续下降，也可能因促使消费者推迟购买而造成危害。
12. Exchange Rates and Balance of Payments | 汇率与国际收支
The exchange rate is the price of one currency in terms of another. It can be expressed as a fixed, floating, or managed floating system. Exchange rates influence the prices of exports and imports.
汇率是一种货币以另一种货币表示的价格。其制度可以是固定汇率、浮动汇率或有管理的浮动汇率。汇率会影响出口和进口的价格。
A depreciation of a currency makes exports cheaper and imports more expensive, potentially improving the trade balance if demand is price elastic. An appreciation has the opposite effect.
货币贬值会使出口更便宜、进口更昂贵，如果需求具有价格弹性，则可能改善贸易收支。升值则会产生相反的效果。
The balance of payments records all financial transactions between a country and the rest of the world. The current account includes trade in goods, services, income, and current transfers. A persistent deficit can be a source of concern, while a surplus indicates a country is a net lender.
国际收支记录了一国与世界其他地区之间的所有金融交易。经常项目包括货物贸易、服务贸易、收入以及经常转移。持续的赤字可能引发担忧，而顺差则表明该国是净贷出方。
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