📚 Year 9 WJEC Accounting: Core Knowledge Review | Year 9 WJEC 会计：核心知识点梳理
Welcome to your essential revision guide for Year 9 WJEC Accounting. This article brings together all the core concepts you need to understand the language of business. We will walk through the accounting equation, double-entry bookkeeping, financial statements, and more, with clear explanations in both English and Chinese to support your learning.
欢迎阅读 Year 9 WJEC 会计核心知识点复习指南。本文梳理了你必须掌握的全部核心概念，帮助你读懂商业的语言。我们将用中英双语清晰讲解会计等式、复式记账、财务报表等重点内容，助力你的学习。
1. What is Accounting? | 什么是会计？
Accounting is the process of recording, classifying, summarising and interpreting financial information from business transactions.
会计是记录、分类、汇总和解释企业交易财务信息的过程。
Its main purpose is to provide information that helps owners, managers and other stakeholders make informed economic decisions.
其主要目的是提供信息，帮助所有者、管理者和其他利益相关者做出明智的经济决策。
Accounting can be divided into financial accounting (for external users) and management accounting (for internal planning and control), but at this stage we focus on the basic principles of recording and reporting.
会计可分为财务会计（面向外部使用者）和管理会计（用于内部规划与控制），不过在现阶段我们侧重学习记录与报告的基本原则。
2. Users of Accounting Information | 会计信息使用者
Internal users include owners, managers and employees who need financial data to run the business on a daily basis and make strategic plans.
内部使用者包括所有者、管理者和员工，他们需要财务数据来运营企业日常活动并制定战略计划。
External users are not directly involved in running the business. They include investors, lenders, suppliers, customers and government agencies such as HMRC.
外部使用者不直接参与企业经营。他们包括投资者、贷款人、供应商、客户以及英国税务海关总署等政府机构。
Each user has different information needs: investors look for profitability, lenders check the ability to repay loans, and tax authorities require accurate profit calculations.
不同的使用者有着不同的信息需求：投资者关注盈利能力，贷款人检查偿债能力，税务机关则需要准确的利润计算。
3. The Accounting Equation | 会计等式
The accounting equation is the foundation of the entire double-entry system. It must always balance.
会计等式是整个复式记账系统的基础，必须始终保持平衡。
ASSETS = LIABILITIES + CAPITAL
资产 = 负债 + 资本
Every financial transaction has a dual effect that preserves this equality. For example, if the business buys equipment with a bank loan, assets (equipment) increase and liabilities (loan) increase by the same amount.
每笔财务交易都具有双重影响，以保持该等式成立。例如，企业用银行贷款购买设备，资产（设备）增加的同时负债（贷款）等额增加。
4. Assets, Liabilities and Capital | 资产、负债与资本
An asset is a resource controlled by the business that is expected to bring future economic benefits. Assets are classified as non-current (long-term use, e.g. machinery, buildings) and current (cash, inventory, trade receivables).
资产是企业控制的、预期能带来未来经济利益的资源。资产分为非流动资产（长期使用，如机器、房产）和流动资产（现金、存货、应收货款）。
A liability is a present obligation arising from past events. Like assets, liabilities are split into non-current (loans repayable after more than one year) and current (trade payables, bank overdraft).
负债是由过去事项产生的现时义务。与资产类似，负债分为非流动负债（一年以上偿还的贷款）和流动负债（应付货款、银行透支）。
Capital (or owner’s equity) represents the owner’s investment in the business plus retained profits. It is the residual claim after liabilities are deducted from assets.
资本（或所有者权益）代表所有者对企业的投资加上留存利润，是资产扣除负债后的剩余权益。
5. Double-Entry Bookkeeping | 复式记账法
Double-entry means every transaction affects at least two accounts. One account receives a debit (Dr) entry, and another receives a credit (Cr) entry of an equal amount.
复式记账意味着每笔交易至少影响两个账户。一个账户记入借方 (Dr)，另一个账户记入同等金额的贷方 (Cr)。
The rules of double-entry are based on the accounting equation. Increases in assets are recorded as debits, and increases in liabilities and capital are recorded as credits. Expenses and drawings follow the same rule as assets (debit to increase), while income works like liabilities (credit to increase).
复式记账规则基于会计等式。资产增加记借方，负债和资本增加记贷方。费用和提款遵循与资产相同的规则（增加记借方），而收入则类似于负债（增加记贷方）。
Always check that total debits equal total credits after every transaction to maintain the balance of the accounting equation.
每一笔交易后都要检查借方总额是否等于贷方总额，以维持会计等式的平衡。
6. Books of Prime Entry | 原始分类簿
Before transactions are entered in the ledger, they are first recorded in books of prime entry. These books summarise similar transactions to reduce the workload of the ledger.
交易在记入分类账之前，首先记录在原始分类簿中。这些账簿汇总同类型的交易，以减轻分类账的工作量。
Common books of prime entry include the sales day book, purchases day book, sales returns day book, purchases returns day book, cash book and the general journal.
常见的原始分类簿包括销售日记账、采购日记账、销货退回日记账、购货退出日记账、现金簿和普通日记账。
The general journal is used for transactions that do not fit into the specialised books, such as correction of errors or the purchase of a non-current asset on credit.
普通日记账用于记录无法归入专用账簿的交易，例如更正错误或赊购非流动资产。
7. Ledger Accounts | 分类账
A ledger account, often shown as a T-account, has a left side (debit) and a right side (credit). Each account records all entries for a specific asset, liability, capital, income or expense.
分类账户通常以 T 型账户的形式展示，左边为借方，右边为贷方。每个账户记录特定资产、负债、资本、收入或费用的所有分录。
After posting entries from the books of prime entry, the account is balanced: the side with the greater total receives the balancing figure as a balance carried down (c/d), which is then brought down (b/d) on the opposite side at the start of the next period.
从原始分类簿过账后，需将账户结平：总额较大的一侧记入期末余额 (c/d)，而在下一期期初将该余额反过来记在另一侧作为期初余额 (b/d)。
For example, a cash account with total debits of £5,000 and total credits of £3,000 will have a debit balance of £2,000 carried down, representing cash still held.
例如，现金账户借方总额5000英镑、贷方总额3000英镑，则结转借方余额2000英镑，代表企业仍持有的现金。
8. Trial Balance | 试算平衡表
A trial balance is a list of all ledger account balances at a particular date, with debit balances in one column and credit balances in another. The total of the debit column must equal the total of the credit column.
试算平衡表是特定日期所有分类账余额的列表，借方余额列在一栏，贷方余额列在另一栏。借方合计必须等于贷方合计。
It is used to check the arithmetic accuracy of the double-entry records, but a balanced trial balance does not guarantee that there are no errors.
它用于检查复式记录的算术准确性，但试算平衡表平衡并不保证没有错误。
Types of errors not revealed by a trial balance include omission of a whole transaction, recording a correct amount in the wrong person’s account, compensating errors, and errors of principle.
试算平衡表无法发现的错误类型包括：整笔交易漏记、金额正确但记错个人账户、抵消性错误和原则性错误。
9. Income Statement (Profit & Loss Account) | 利润表（损益表）
The income statement calculates the profit or loss a business has made over a period of time. The basic formula is:
利润表计算企业在一个时期内获得的利润或亏损。基本公式为：
Profit = Revenues – Expenses
利润 = 收入 – 费用
A simple income statement starts with sales revenue, subtracts cost of sales to find gross profit, and then deducts operating expenses (such as rent, wages and insurance) to arrive at net profit.
简单的利润表从销售收入开始，减去销售成本得出毛利，再减去经营费用（如租金、工资和保险费），得出净利润。
If expenses exceed revenues, the result is a net loss. The income statement helps stakeholders assess the financial performance of the business.
如果费用超过收入，结果就是净亏损。利润表帮助利益相关者评估企业的财务业绩。
10. Statement of Financial Position (Balance Sheet) | 财务状况表（资产负债表）
The statement of financial position reports the business’s assets, liabilities and capital at a specific point in time. It is a direct expression of the accounting equation.
财务状况表反映企业在特定时点的资产、负债和资本状况。它是会计等式的直接展现。
Assets are typically listed from least liquid to most liquid, starting with non-current assets (land, equipment) and then current assets (inventory, receivables, cash). Liabilities are similarly grouped into non-current and current.
资产通常按照流动性从低到高排列，先列出非流动资产（土地、设备），再列出流动资产（存货、应收账款、现金）。负债也同样分为非流动和流动两类。
The capital section shows the owner’s initial investment plus retained profit. The balance sheet must always show that total assets equal total liabilities plus capital.
资本部分列示所有者的初始投资加上留存利润。资产负债表必须始终显示总资产等于总负债加资本。
11. The Cash Book | 现金簿
The cash book is a unique book of prime entry that also acts as a ledger account for cash and bank transactions. It records all receipts and payments, whether in cash or through the bank.
现金簿是一种特殊的原始分录簿，同时也是记录现金和银行交易的分类账账户。它记录所有收款和付款，无论是现金还是通过银行进行的交易。
A two-column cash book has separate columns for cash and bank on both the debit and credit sides. A three-column cash book adds discount columns to record cash discounts allowed and received.
两栏式现金簿在借方和贷方都分别为现金和银行设立了单独栏目。三栏式现金簿则增加了折扣栏，用来记录给予和收到的现金折扣。
At the end of a period, the cash book balance is compared with the bank statement. Any differences are investigated and a bank reconciliation statement may be prepared to explain them.
期末，将现金簿余额与银行对账单进行对比。任何差异都需调查，必要时编制银行存款余额调节表予以解释。
12. Summary: Key Principles | 总结：核心原则
Always return to the accounting equation: every transaction changes at least two accounts, and the equation Assets = Liabilities + Capital must remain in balance.
始终回归会计等式：每笔交易会改变至少两个账户，且资产 = 负债 + 资本的等式必须保持平衡。
Double-entry bookkeeping is the tool that enforces this balance. Master the debit and credit rules for assets, liabilities, capital, income and expenses, and you will be able to record any transaction correctly.
复式记账是维持这种平衡的工具。掌握了资产、负债、资本、收入和费用的借贷规则，你就能正确记录任何交易。
The trial balance checks arithmetic accuracy, but never rely on it alone. Complete the process by preparing an income statement and a statement of financial position to tell the full story of the business’s performance and position.
试算平衡表检查算术准确性，但绝不能完全依赖它。应进一步编制利润表和财务状况表，以完整展现企业的业绩与财务状况。
Regular practice with recording transactions, posting to ledgers, extracting a trial balance and drafting simple financial statements is the best way to build your confidence in Year 9 WJEC Accounting.
经常练习记录交易、过账至分类账、编制试算平衡表以及起草简易财务报表，是建立 Year 9 WJEC 会计信心的最佳途径。
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