📚 AS WJEC Economics: A Mnemonic Guide to Key Terms | AS WJEC 经济：词汇术语速记指南
Mastering the language of economics is your first step toward exam success. This guide takes you through the AS WJEC Economics syllabus, using vivid mnemonics, connections, and simple memory hooks that make dozens of essential terms stick. Each key word is presented with a clear definition followed by a memory trick you can use in revision. The paired paragraphs keep English and Chinese together so you can switch effortlessly while strengthening recall.
掌握经济学的语言是通向考试成功的第一步。本指南带你梳理 AS WJEC 经济学大纲的高频术语，配合生动的记忆口诀、联想和简单的记忆钩子，让几十个核心词汇牢牢印在脑中。每个关键词都配有清晰的定义和可用的记忆技巧，中英对照的段落让你在复习时轻松切换并加深记忆。
1. Scarcity and Choice | 稀缺性与选择
Scarcity describes the unlimited wants of individuals and societies facing limited resources. Memory tip: the word starts with ‘scar’, like a mark left by a wound – resources leave a scar of shortage on our plans. Remember ‘Scar-city’ to underline that all choices involve missing out.
稀缺性指个人和社会的无限欲望与有限资源之间的矛盾。记忆技巧：英文 scar 意为“疤痕”，资源稀缺就像在计划上留下短缺的伤痕。想起“Scar-city”，时刻提醒自己所有选择都意味着有所舍弃。
Opportunity cost is the value of the next best alternative forgone when a choice is made. Think of the ‘OC’ exam board initials: ‘Oops, Cost!’ – every decision brings an ‘oops’ moment because you give up something you also wanted. When you decide to study economics instead of going to a concert, the concert experience is the opportunity cost.
机会成本是做出选择时所放弃的次优替代品的价值。用 ‘OC’ 联想法：Oops，Cost！每个决定都藏着一声“哎呀”，因为你也放弃了另一件想要的东西。当你选择学经济而不是去演唱会时，那场演唱会的体验就是机会成本。
Factors of production are resources used to produce goods and services: land, labour, capital and enterprise. The mnemonic C.E.L.L. (Capital, Enterprise, Land, Labour) can be remembered by imagining a factory ‘cell’ where all four factors work together. Land includes natural resources, labour is workforce effort, capital is man-made tools, and enterprise is the risk-taking ability to organise them.
生产要素是用于生产商品和服务的资源：土地、劳动力、资本和企业家才能。记忆口诀 C.E.L.L.（Capital, Enterprise, Land, Labour）——想象一个工厂的“细胞cell”，四种要素都在其中协同运作。土地包括自然资源，劳动力为人力付出，资本是人造生产工具，企业家才能则是组织和承担风险的能力。
2. Demand, Supply and Market Equilibrium | 需求、供给与市场均衡
Law of demand: as price rises, quantity demanded falls, ceteris paribus. The downward sloping demand curve can be recalled by ‘D for Down’. A simple story: when T-shirt prices jump, you ‘demand’ fewer T-shirts. The causal arrow points from price to quantity.
需求定律：在其他条件不变时，价格上升，需求量下降。需求曲线向下倾斜用“D 代表 Down”来记。一个小故事：T恤涨价了，你对T恤的“需求”数量就减少了。因果关系是从价格指向数量。
Law of supply: as price rises, quantity supplied rises, ceteris paribus. Supply curve slopes upward – ‘S for Skyward’. Producers want to supply more when they can earn higher profits, just as a pizza shop makes more pizzas if the selling price goes up.
供给定律：其他条件不变时，价格上升，供给量增加。供给曲线向上方倾斜——“S 代表 Skyward 飞上天”。生产者能在高价盈利时会愿意多供，就像披萨店在饼价上涨时生产更多披萨。
Movement along vs shift: a change in the good’s own price causes a movement along the curve, while a change in other factors (income, tastes, etc.) shifts the whole curve. Remember: ‘Price moves you along the path; other factors shift the path itself.’ For demand shifters use PIRATES: Population, Income, Related goods, Advertising, Tastes, Expectations, Seasons.
沿曲线移动与曲线位移：本商品自身价格变化引起沿曲线移动，其他因素变化（收入、偏好等）导致整条曲线平移。记住“价格让你沿路走，其他因素挪动了路本身”。需求平移因素用 PIRATES：人口、收入、相关商品、广告、偏好、预期、季节。
3. Elasticity in a Nutshell | 弹性速记
Price elasticity of demand (PED) = % change in quantity demanded ÷ % change in price. If PED > 1, demand is elastic – consumers are sensitive. Imagine a bungee cord: elastic stretches generously. If PED < 1, inelastic – like a rigid steel rod, quantity hardly moves with price changes. Unitary elasticity (PED = 1) gives a perfect rectangular hyperbola curve.
需求价格弹性(PED) = 需求量变动百分比 ÷ 价格变动百分比。PED > 1，富有弹性——消费者反应敏感，想象蹦极绳，轻轻一拉就伸得很长。PED < 1，缺乏弹性——像钢棍，价格变化时数量几乎不动。单位弹性(PED = 1)形成完美的正双曲线。
Income elasticity of demand (YED): positive for normal goods, negative for inferior goods. Use the letter ‘Y’ to think ‘Your income’. When your income rises, you buy more normal goods (YED positive) and less inferior goods (YED negative). Luxury goods have YED > 1; necessities between 0 and 1.
需求收入弹性(YED)：正常品为正，低档品为负。利用字母 “Y” 联想到 “Your income”。收入增加时，更多消费正常品(YED正)，更少消费低档品(YED负)。奢侈品 YED > 1，必需品介于 0 与 1 之间。
Cross elasticity of demand (XED): positive for substitutes, negative for complements. X marks the cross relationship. If the price of butter rises, demand for margarine (substitute) rises → positive XED. If the price of printers rises, demand for ink cartridges (complement) falls → negative XED.
需求交叉弹性(XED)：替代品为正，互补品为负。“X” 代表交叉关系。黄油涨价，人造黄油（替代品）需求上升 → XED 正；打印机涨价，墨盒（互补品）需求下降 → XED 负。
4. Market Structures Made Memorable | 市场结构巧记
Perfect competition: many buyers and sellers, homogeneous product, no barriers to entry or exit, perfect information. Think of a farmers’ market with identical strawberries – no single seller can influence price. All firms are price takers. The memory image: a perfectly flat demand curve at the market price.
完全竞争：众多买卖者、同质产品、无进出壁垒、信息完全。想象一个卖相同草莓的农贸市场，谁也不影响价格，所有厂商皆为价格接受者。记忆图像：位于市场价格的一条完全水平需求曲线。
Monopoly: a single seller with high barriers to entry. ‘Mono-‘ means one. Picture a board game where one player owns all the property. Monopolies are price makers and can earn supernormal profits in the long run. Natural monopoly arises when huge fixed costs make one firm the most efficient supplier, like water networks.
垄断：唯一卖者，进入壁垒高。Mono- 意为“一”。想象一个独占所有地产的桌面游戏玩家。垄断者为价格制定者，长期可获得超常利润。自然垄断源于巨大的固定成本使单一厂商成为最有效率的供给者，如自来水管道网。
Oligopoly: a market dominated by a few large firms, with high concentration ratio and interdependence. Remember ‘Oli’ sounds like ‘only a few’. Cournot, kinked demand curve, and game theory appear here. Firms must consider rivals’ reactions, leading to price rigidity. The kink shows different elasticities above and below the current price.
寡头垄断：由少数大企业主导的市场，集中度高、相互依赖。“Oli” 听着像 “only a few 仅几个”。古诺模型、弯折需求曲线与博弈论均现于此。企业必须考虑竞争对手的反应，导致价格具有粘性。弯折处之上和之下的弹性不同。
5. Market Failure and Its Causes | 市场失灵及其原因
Market failure occurs when the free market fails to allocate resources efficiently, leading to overproduction or underproduction from society’s viewpoint. The mnemonic ‘FAIL’ can stand for: F – externalities, A – asymmetric information, I – irrational behaviour, L – lack of public goods. Where the marginal social cost (MSC) diverges from marginal social benefit (MSB), markets fail.
市场失灵指自由市场不能有效配置资源，导致从社会角度看生产过度或生产不足。助记口诀 “FAIL”：F 外部性、A 信息不对称、I 非理性行为、L 公共品缺失。当边际社会成本(MSC)与边际社会收益(MSB)背离时，市场就失灵了。
Negative production externality: MSC > MPC, leading to overproduction. A factory pumping smoke imposes a cost on residents that the firm ignores. Remember the ‘smoke-stack’ image; the ‘extra’ smoke is the external cost. To internalise the externality, governments use taxes equal to the external cost.
负生产外部性：MSC > MPC，导致生产过剩。工厂排烟给居民带来成本却被忽视。记住“烟囱”图；那多出来的烟就是外部成本。政府用等于外部成本的税收将外部性内部化。
Public goods are non-rival and non-excludable, such as street lighting. The free-rider problem means private firms will not supply them. Memory: ‘Non-rival, non-excludable = No one can be stopped; No one’s consumption reduces another’s.’ Think of a lighthouse – ships cannot be stopped from seeing the light, and many ships can use it simultaneously.
公共品具有非竞争性和非排他性，如路灯。搭便车问题使私人企业不愿提供。记忆：“非竞争、非排他 = 无法阻止任何人使用，一个人的使用也不减少他人的使用。”想想灯塔——无法阻止船只看见灯光，且多艘船能同时使用。
6. Government Intervention Toolkit | 政府干预工具箱
Specific tax is a fixed amount per unit, shifting supply upward in parallel. An ad valorem tax is a percentage of price, causing a pivotal shift. Use the story: ‘Specific’ is like a specific piece of Lego added to each unit – same size every time. ‘Ad Valorem’ sounds like ‘add value more’, so the tax amount grows with the price, tilting the supply curve.
从量税是每单位征收固定金额，供给曲线平行上移。从价税按价格百分比征收，导致供给曲线旋转。故事记忆：“Specific”就像每单位都加一块同样大小的乐高积木。“Ad Valorem”念起来像“按价值添加”，税额随价增长，让供给曲线倾斜。
Maximum price (ceiling) is set below equilibrium to protect consumers, creating a shortage. Imagine a ceiling – you cannot jump higher, but the room gets crowded (excess demand). Minimum price (floor) is set above equilibrium to protect producers, creating a surplus. Think of a dance floor you cannot drop below, and unsold goods pile up like a mountain of surplus grain.
最高限价（价格天花板）设在均衡价格下方以保护消费者，导致短缺。想象天花板——跳不上去，房间里挤满了人（超额需求）。最低限价（价格地板）设在均衡价格上方以保护生产者，导致过剩。想成你低不过去的地板，未售出的商品如粮食山一样堆高。
7. Macroeconomic Objectives and Indicators | 宏观经济目标与指标
Macroeconomic objectives often include strong economic growth, low unemployment, low and stable inflation, a satisfactory balance of payments on current account, and a more equal distribution of income. Use the acronym BIG RED P: Balanced economic growth, Inflation (low), genuine progress (GDP), Balance of payments, Reduced unemployment, Environment (sustainability), Distribution (equity). Pick a few letters that resonate with you: Growth, Jobs, Prices, Trade, Fairness, Green.
宏观经济目标通常包括强劲增长、低失业、低且稳定的通胀、令人满意的经常账户收支平衡以及更均等的收入分配。用 BIG RED P 记忆：Balance of payments, Inflation, Growth, Reduction of unemployment, Environment, Distribution, Price stability。也可用“增长、就业、物价、贸易、公平、绿色”来串联。
CPI vs RPI: Consumer Price Index excludes mortgage interest payments and council tax, whereas RPI includes them. RPI usually gives a higher inflation figure. Recall ‘RPI’ has an ‘R’ for ‘residential costs’ it includes, while CPI stands for ‘Cleaner Price Index’ as it excludes housing costs that change dramatically.
CPI 与 RPI：消费者物价指数 CPI 不含抵押贷款利息和市政税，RPI 则包含这些住房成本。RPI 通胀率通常更高。可记 “RPI”中的“R”代表包含“住宅 residential”费用，CPI 则是“更纯净的物价指数”，剔除了波动大的住房成本。
8. Aggregate Demand and Injections | 总需求与注入项
Aggregate Demand (AD) = C + I + G + (X – M). Use the phrase ‘CIGarettes eXported and iMported’ to memorise the components: Consumer spending, Investment, Government spending, eXports minus iMports (net exports). A fall in any component shifts AD left; an increase shifts AD right.
总需求(AD) = C + I + G + (X – M)。用 “CIGarettes eXported and iMported” 来记各项：消费、投资、政府支出、出口减进口。任一分项的下降都使 AD 左移，增加则右移。
Injections into the circular flow are Investment (I), Government spending (G) and Exports (X). Withdrawals are Savings (S), Taxation (T) and Imports (M). Mnemonic: ‘InJect Xtreme G I’ – I, G, X are injections. For withdrawals, ‘STM’ sounds like ‘steam’ leaving the system. When injections equal withdrawals, the economy is in equilibrium.
经济循环流中的注入是投资 I、政府支出 G 和出口 X。漏出为储蓄 S、税收 T 和进口 M。口诀：注入项 “I, G, X” 可读作“艾吉斯”，漏出项 “S, T, M” 可想象成热量（蒸汽）从系统流失。当注入等于漏出时，经济达到均衡。
9. Fiscal and Monetary Policy Snapshots | 财政货币政策快照
Fiscal policy manipulates government spending and taxation to influence AD. ‘Fiscal’ sounds like ‘financial scales’ – the government moves the scales. A budget deficit occurs when spending exceeds tax revenue; a surplus when tax revenue exceeds spending. Direct taxes (income tax, corporation tax) are levied on income, while indirect taxes (VAT, excise duties) are on expenditure. Remember: ‘Direct hits your pocket before you spend; indirect when you spend.’
财政政策通过调整政府支出与税收来影响 AD。“Fiscal” 音近“财政的天平”——政府移动天平。支出大于税收时出现预算赤字，反之则为盈余。直接税（所得税、公司税）针对收入征收，间接税（增值税、消费税）针对支出。记住：“直接税花钱前打你口袋，间接税花钱时打你。”
Monetary policy uses interest rates, money supply and exchange rates to manage inflation and growth. The Bank of England’s Monetary Policy Committee sets the Bank Rate. Lower rates stimulate borrowing and spending; higher rates cool down an overheating economy. Mnemonic: ‘Monetary’ reminds us of ‘money’. Rate-cutting is like stepping on a gas pedal, rate-hiking is pressing the brake.
货币政策运用利率、货币供给和汇率管理通胀与增长。英格兰银行货币政策委员会设定基准利率。低利率激励借贷和支出；高利率给过热经济降温。助记：“Monetary”就是与“money”挂钩。降息像踩油门，加息像踩刹车。
10. International Trade and Protectionism | 国际贸易与保护主义
Current account of the balance of payments records trade in goods, trade in services, primary income and secondary income. Remember the layers: ‘Goods, Services, Income coming home, Transfers.’ Think of a sandwich: bread (goods), sauce (services), meat (income), cheese (transfers). Or the mnemonic ‘GIST’.
经常账户记录货物贸易、服务贸易、初次收入和二次收入。记忆层次：货物、服务、流入的收入、转移支付。想象一个三明治：面包（货物）、酱料（服务）、肉（收入）、奶酪（转移）。也可用首字母 GIST 记忆。
Tariff: a tax on imported goods, raising domestic price and reducing imports. A quota is a physical limit on import quantity. The mnemonic: ‘Tariff = Tax at the border; Quota = Quantity cap.’ Both shield domestic industries but can lead to retaliation and higher consumer prices. With a tariff, tax revenue is generated; a quota may create quota rent for importers.
关税是对进口商品征收的税，抬升国内价格并减少进口。配额是对进口数量的物理限制。速记：“Tariff 边境税，Quota 数量帽”。两者皆保护国内产业，但可能引发报复和抬高消费者价格。关税产生税收收入，配额则可能给进口商带来配额租金。
11. Economic Growth and Development | 经济增长与发展
GDP (Gross Domestic Product) measures the total output produced within a country’s borders. Real GDP adjusts for inflation. Remember ‘Domestic’ = inside the house. GNI (Gross National Income) adds net income from abroad. For development, we use HDI (Human Development Index) combining income, health and education. Think of ‘GNI is going international’, while GDP stays domestic.
GDP（国内生产总值）衡量一国境内总产出。实际 GDP 剔除了通胀。记住“Domestic”就是在家里。GNI（国民总收入）加上了来自国外的净收入。发展程度使用 HDI，综合收入、健康和教育。GNI 迈出国门，GDP 留在境内。
Globalisation brings benefits like lower prices and greater choice, but also risks of structural unemployment and environmental damage. The memory key: ‘Globe’ shrinking due to trade and technology. Multinational corporations (MNCs) invest via FDI (Foreign Direct Investment), bringing capital but sometimes exploiting low wages.
全球化带来低价格和更多选择的好处，也带来结构性失业和环境破坏的风险。记忆点：“地球”因贸易和科技而缩小。跨国公司通过外国直接投资(FDI)注入资本，但有时也利用低工资。
12. Quick-Fire Revision Strategies | 快速复习策略
Build a deck of flashcards: English term on one side, Chinese definition plus a sketch or mnemonic on the other. Use active recall: cover the definition, say it aloud, then reveal. Group terms by theme – place all elasticity cards together. Every weekend, pick five random cards and test yourself. The paired bilingual format has already built recall pathways in your brain.
制作一套闪卡：一面是英文术语，另一面是中文定义外加一个草图或记忆口诀。用主动回想：遮住定义，大声复述，然后揭开。按主题分组，例如所有弹性卡片放一起。每个周末随机抽出五张自测。你已通过中英对照的方式在大脑中建立了双向回忆通路。
Create acronyms for evaluation points, like ‘WISE’ for policy evaluation: Winners and losers, Incentives, Sustainability, Effectiveness. When you encounter a new term, pause and think of a visual image or a play on words. Connecting the term to something absurd or personal makes it unforgettable. Consistent, spaced practice is scientifically proven to outperform last-minute cramming.
为评估要点准备首字母口诀，比如政策评估用“WISE”：赢家与输家(Winners)、激励(Incentives)、可持续性(Sustainability)、有效性(Effectiveness)。遇到新术语时，停下来构思一个画面或谐音梗。把术语和夸张或个人的东西联系起来，会令它难忘。间隔性的持续练习已被科学证明远胜临考死记。
Published by TutorHao | Economics Revision Series | aleveler.com
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