📚 Year 11 WJEC Economics: Summer Preview and Bridging Course | Year 11 WJEC 经济：暑期预习与衔接课程
This article is designed to help you transition smoothly from Year 10 into the final GCSE year. We will revisit essential microeconomic concepts from Unit 1 and then look ahead to the macroeconomic topics in Unit 2, all while providing a clear summer study strategy. Using this guide, you can consolidate your knowledge, build confidence, and prepare to tackle exam-style questions effectively.
本文旨在帮助你从 Year 10 平稳过渡到 GCSE 最后一年。我们将重温单元1的基本微观经济学概念，并预习单元2的宏观经济学主题，同时提供一个清晰的暑期学习策略。通过本指南，你可以巩固知识、树立信心，并有效准备考试题型。
1. Understanding the WJEC Economics Course Structure | 了解 WJEC 经济学课程结构
WJEC GCSE Economics is split into two equally weighted units. Unit 1, ‘How Markets Work’, focuses on microeconomics and is assessed in a written exam worth 50% of the final grade.
WJEC GCSE 经济学分为两个权重相等的单元。单元1 “市场如何运作” 侧重微观经济学，以书面考试形式评估，占最终成绩的50%。
Unit 2, ‘The National Economy’, introduces macroeconomics and also accounts for 50%. Both papers test your knowledge (AO1), application (AO2) and analysis/evaluation (AO3). Use the summer to understand this structure and the types of questions you will face.
单元2 “国民经济” 介绍宏观经济学，同样占50%。两份试卷都考查你的知识 (AO1)、应用 (AO2) 以及分析与评价 (AO3)。利用暑期了解这一结构以及你将遇到的题型。
2. Key Concepts from Year 10: Scarcity and Choice | Year 10 核心概念：稀缺性与选择
The fundamental economic problem is scarcity: human wants are unlimited, but resources are finite. This forces individuals, firms and governments to make choices.
基本经济问题是稀缺性：人类的欲望是无限的，但资源是有限的。这迫使个人、企业和政府做出选择。
Because we cannot have everything, every decision involves an opportunity cost – the next best alternative forgone. A firm investing in new machinery, for instance, sacrifices spending on staff training.
因为我们无法拥有一切，每个决策都涉及机会成本——即所放弃的次优选择。例如，企业投资新机器，就要牺牲员工培训的支出。
3. Opportunity Cost and Production Possibility Frontiers | 机会成本与生产可能性边界
A Production Possibility Frontier (PPF) shows the maximum combinations of two goods an economy can produce with existing resources. Points on the curve represent efficient output.
生产可能性边界 (PPF) 展示了一个经济体利用现有资源能生产的两种商品的最大组合。曲线上的点代表有效产出。
Movement along the PPF illustrates increasing opportunity cost. If resources are not fully used, the economy operates inside the curve, causing inefficiency.
沿 PPF 的移动说明了机会成本递增。如果资源未充分利用，经济就在曲线内部运行，导致无效率。
4. The Fundamentals of Demand and Supply | 需求与供给的基本原理
The law of demand states that as price rises, the quantity demanded contracts, other factors remaining constant. Shifts in demand are caused by changes in income, tastes, the price of substitutes/complements and more.
需求定律指出，在其他条件不变的情况下，价格上升，需求量收缩。收入、偏好、替代品/互补品价格等变化会导致需求移动。
The law of supply states that as price rises, the quantity supplied expands. Supply shifts stem from changes in costs of production, technology, indirect taxes and external shocks.
供给定律指出，价格上涨，供给量扩大。生产成本、技术、间接税和外部冲击的变化会导致供给移动。
5. Market Equilibrium and the Price Mechanism | 市场均衡与价格机制
Equilibrium occurs where quantity demanded equals quantity supplied at a given price. This market-clearing price balances the plans of buyers and sellers.
均衡发生在给定价格下需求量等于供给量之时。这个市场出清价格平衡了买方和卖方的计划。
If the price is above equilibrium, excess supply pushes prices down. If below, excess demand drives prices up. The price mechanism rations scarce goods and signals where resources should be allocated.
如果价格高于均衡水平，超额供给会压低价格；如果低于均衡，超额需求会推高价格。价格机制对稀缺商品进行配给，并发出资源应投向何处的信号。
6. Introduction to Elasticity: PED and PES | 价格弹性简介：需求价格弹性与供给价格弹性
Price elasticity of demand (PED) measures the responsiveness of quantity demanded to a change in price. It is calculated as the percentage change in quantity demanded divided by the percentage change in price.
需求价格弹性 (PED) 衡量需求量对价格变化的反应程度。计算方法是需求量变动的百分比除以价格变动的百分比。
PED = %ΔQd / %ΔP
PED = 需求量变动% / 价格变动%
When |PED| > 1, demand is price elastic; when |PED| < 1, it is inelastic. Price elasticity of supply (PES) works similarly, measuring how responsive quantity supplied is to price changes.
当 |PED| > 1 时，需求富于价格弹性；当 |PED| < 1 时，需求缺乏弹性。供给价格弹性 (PES) 同理，衡量供给量对价格变化的反应程度。
7. Market Failure and Government Intervention | 市场失灵与政府干预
Market failure occurs when the price mechanism causes an inefficient allocation of resources. Negative externalities like pollution lead to over-production, while positive externalities like vaccinations lead to under-consumption.
当价格机制导致资源无效配置时，就出现市场失灵。负外部性（如污染）导致生产过剩，正外部性（如疫苗接种）导致消费不足。
Public goods are non-excludable and non-rival, so they would not be provided by the free market. Governments intervene through taxation, subsidies, regulation and direct provision to correct these failures.
公共品具有非排他性和非竞争性，因此自由市场不会提供。政府通过税收、补贴、监管和直接供给进行干预，以纠正这些失灵。
8. Recap of Macroeconomic Aims | 宏观经济目标回顾
Governments pursue four principal macroeconomic objectives: sustainable economic growth, low and stable inflation, low unemployment, and a balanced current account on the balance of payments.
政府追求四大宏观经济目标：可持续经济增长、低且稳定的通胀、低失业率，以及国际收支经常项目的平衡。
Growth is measured by real GDP, inflation by indices like the CPI, unemployment by the claimant count or LFS. Keeping these indicators in mind will help you understand Unit 2.
增长用实际 GDP 衡量，通胀用 CPI 等指数衡量，失业用申领人数统计或劳动力调查衡量。记住这些指标有助于你理解单元2。
9. Fiscal and Monetary Policy Overview | 财政与货币政策概述
Fiscal policy involves changes in government spending and taxation to influence aggregate demand. Expansionary policy (higher spending, lower taxes) is used to boost a sluggish economy.
财政政策涉及改变政府支出和税收以影响总需求。扩张性政策（增加支出、减税）用于提振疲软的经济。
Monetary policy, managed by the central bank, adjusts interest rates and the money supply. Lower interest rates make borrowing cheaper, encouraging spending and investment, while higher rates do the opposite.
货币政策由中央银行管理，调整利率和货币供给。降低利率使借款更便宜，鼓励支出与投资；提高利率则相反。
10. Globalisation and International Trade | 全球化与国际贸易
International trade allows countries to specialise according to comparative advantage, increasing world output. Free trade brings lower prices and greater variety for consumers.
国际贸易使各国能够根据比较优势进行专业化，从而增加世界产出。自由贸易为消费者带来更低的价格和更多的品种。
Trade is recorded in the balance of payments. A current account deficit arises when a country imports more than it exports. Exchange rates – the price of one currency in terms of another – affect competitiveness and trade flows.
贸易记录在国际收支中。当一国进口大于出口时，就出现经常项目逆差。汇率——一种货币以另一种货币表示的价格——影响竞争力和贸易流动。
11. Crafting a Summer Study Plan | 制定暑期学习计划
Begin by organising your Year 10 notes into topic summaries. Use colour-coded mind maps to link concepts like demand shifts to real-world events, such as a heatwave increasing demand for ice cream.
先将 Year 10 的笔记整理成主题摘要。使用分色思维导图，将需求变化等概念与现实事件联系起来，如热浪增加了对冰淇淋的需求。
Allocate 20–30 minutes a few times a week to past papers from the WJEC website. Focus on the 8-mark and 12-mark questions, even if you plan just one paragraph per session, to build your evaluation skills gradually.
每周安排几次 20–30 分钟，练习 WJEC 官网上的历年试卷。重点练习 8 分和 12 分题，即使每次仅写一段，也能逐步培养你的评价能力。
12. Bridging to Year 11: Essay Skills and Exam Technique | 衔接 Year 11：论述技能与考试技巧
To score highly, your answers must go beyond description. Use a ‘define, apply, analyse, evaluate’ structure: explain the theory, give a contextual example, then weigh up its strengths and limitations.
要取得高分，你的答案不能停留在描述层面。运用“定义、应用、分析、评价”的结构：解释理论，给出具体例子，然后权衡其优点和局限性。
Practise explaining why a policy might work in the short run but fail in the long run, or why its effectiveness depends on the state of the economy. Under timed conditions, plan your chain of reasoning before you start writing.
练习解释为何一项政策短期有效而长期可能失败，或为何其有效性取决于经济状况。在限时条件下，先规划你的推理链条再动笔。
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