📚 Year 7 CCEA Accounting: Case Study Practical Exercises | 七年级CCEA会计：案例分析实战演练
Welcome to this case study walkthrough, designed to help Year 7 students following the CCEA curriculum deepen their understanding of basic accounting principles. Through the real-life scenario of Tom’s lemonade stand, you will practise recording transactions, applying the accounting equation and preparing simple financial statements. Each step is broken down so you can see exactly how everyday business activities are captured in accounts.
欢迎来到本次案例实战解析，专为遵循 CCEA 课程大纲的七年级学生设计，帮助大家加深对基础会计原则的理解。通过汤姆柠檬水摊这个真实情景，你将练习记录交易、运用会计等式并编制简易财务报表。每个步骤都逐步拆解，让你清楚看到日常经营活动是如何在账目中反映出来的。
1. Understanding the Business Scenario | 理解商业场景
Tom decides to run a lemonade stand over the weekend. He starts off with some pocket money, buys a sturdy juicer that will last for months, purchases fresh lemons and sugar, sells many cups of lemonade and pays a small fee to set up his stall at the local market. Your job is to follow the money trail and turn these events into proper accounting records.
汤姆决定周末摆一个柠檬水摊。他先用零花钱起家，购买了一台能用好几个月的结实榨汁机，买来新鲜柠檬和糖，卖出许多杯柠檬水，并向当地市场支付了一小笔摊位费。你的任务就是追踪资金流向，把这些事件转化为规范的会计记录。
The following transactions took place during Tom’s first trading day:
1. Tom invested £50 of his own cash into the business.
2. He bought a juicer for £20 cash.
3. He bought lemonade supplies (lemons and sugar) for £10 cash.
4. He sold all the lemonade he made for £45 cash.
5. He paid a market stall rental of £5 cash.
以下是汤姆在第一个营业日发生的交易：
1. 汤姆将自有现金 £50 投入生意。
2. 他用现金 £20 购买了一台榨汁机。
3. 他用现金 £10 购买了柠檬水物料（柠檬和糖）。
4. 他将做好的所有柠檬水卖掉，收入现金 £45。
5. 他支付了 £5 现金作为市场摊位租金。
2. The Accounting Equation: A Quick Recap | 会计等式：快速回顾
Before we record anything, we must remember the fundamental rule that keeps all accounting in balance: Assets = Liabilities + Owner’s Equity. This equation always holds true, no matter how many transactions are processed. For a small cash business like Tom’s, liabilities are often zero, so the focus is on what the business owns (assets) and how those assets were funded by the owner’s capital and profits (equity).
在记录任何事项之前，我们必须牢记这条保持所有账目平衡的基本规则：资产 = 负债 + 所有者权益。无论处理多少笔交易，这个等式始终成立。对于像汤姆这样的小型现金生意，负债通常为零，因此关注点在于企业拥有什么（资产），以及这些资产如何由所有者投入的资本和赚取的利润（权益）来提供资金。
Think of the equation as a pair of old-fashioned scales: anything placed on the left-hand side (assets) must be exactly balanced by what is on the right-hand side (liabilities plus equity). If Tom spends cash to buy an asset, total assets do not change – one asset is swapped for another. If he makes a sale and earns a profit, both assets (cash) and equity (profit) increase by the same amount, keeping the scales level.
你可以把这个等式想象成一架老式天平：左边（资产）无论放上什么，都必须与右边（负债加权益）完全平衡。如果汤姆花现金购买一项资产，总资产不变——只是一种资产换成了另一种。如果他完成销售并赚取利润，那么资产（现金）和权益（利润）都会增加相同的金额，天平依然保持水平。
3. Transaction 1: Owner’s Investment | 交易一：所有者投资
Tom puts £50 of his own cash into the business. This increases the business’s cash (an asset) by £50. On the other side of the equation, the owner’s capital (part of equity) increases by £50. There are no liabilities involved. After this transaction, Assets = £50 cash, Liabilities = £0, Equity = £50. The balance is maintained.
汤姆将自有现金 £50 投入生意。这使企业的现金（一项资产）增加 £50。在等式另一边，所有者资本（权益的一部分）增加 £50。不涉及任何负债。该交易后，资产 = £50 现金，负债 = £0，权益 = £50。平衡得以保持。
We can visualise the effect like this: Cash £50 ↑, Capital £50 ↑. It is crucial to label the inflow correctly – this is not revenue, but the owner’s own money introduced into the business. Revenue will come later from selling goods to customers.
我们可以这样直观地看到影响：现金 £50 ↑，资本 £50 ↑。关键在于正确标注这笔流入——它不是收入，而是所有者投入生意的自有资金。收入稍后才会通过向顾客出售商品而产生。
4. Transaction 2: Buying a Non-Current Asset | 交易二：购买非流动资产
Tom buys a juicer for £20 cash. A juicer is equipment that will be used for many trading days, so it is classified as a non-current asset, not an expense. The business gives away £20 cash but gains a juicer worth £20. Total assets remain unchanged – cash decreases by £20, non-current assets increase by £20. The accounting equation stays balanced with no effect on liabilities or equity.
汤姆花 £20 现金买了一台榨汁机。榨汁机是一种会在很多个营业日中长期使用的设备，因此被归类为非流动资产，而非费用。企业付出了 £20 现金，但换回了价值 £20 的榨汁机。总资产保持不变——现金减少 £20，非流动资产增加 £20。会计等式保持平衡，对负债和权益没有影响。
At this stage, assets consist of cash £30 (50 – 20) plus a juicer worth £20, total assets £50. Equity is still £50 capital. The equation reads: £50 = £0 + £50.
在这一阶段，资产包括现金 £30（50 – 20）加上价值 £20 的榨汁机，总资产 £50。权益仍然为 £50 资本。等式为：£50 = £0 + £50。
5. Transaction 3: Purchasing Inventory (Supplies) | 交易三：购买存货（物料）
Next, Tom spends £10 cash on lemons and sugar. At the moment of purchase, these supplies are a current asset called inventory. The business still has something of value – it simply exchanges one asset (cash) for another (inventory). Again, total assets do not change, and equity remains the same.
接着，汤姆花 £10 现金购买柠檬和糖。在购买的那一刻，这些物料是一项被称为存货的流动资产。企业仍然拥有有价值的资源——只不过是用一项资产（现金）换成了另一项（存货）。总资产依然不变，权益同样保持不变。
After this, assets are: cash £20 (30 – 10), inventory £10, non-current asset (juicer) £20. Total assets still £50. Equity £50. The equation is still £50 = £0 + £50. This demonstrates that buying supplies is not yet an expense – it becomes an expense only when the supplies are used up.
此后，资产为：现金 £20（30 – 10），存货 £10，非流动资产（榨汁机） £20。总资产仍为 £50。权益 £50。等式仍是 £50 = £0 + £50。这表明购买物料还不构成费用——只有当物料被耗用时，才变成费用。
6. Transaction 4: Earning Revenue from Sales | 交易四：销售收入赚取收入
Tom uses all of his supplies to make lemonade and sells every cup for a total of £45 cash. Here, two things happen at once: the inventory asset is used up (decreases by £10), and cash increases by £45. The net effect on assets is an increase of £35 (cash goes up £45, inventory goes down £10). Because the cash received (£45) is greater than the cost of the supplies used (£10), the business makes a profit.
汤姆将全部物料做成柠檬水，并卖出所有杯子，共收入 £45 现金。这里同时发生两件事：存货资产被耗尽（减少 £10），同时现金增加 £45。对资产的净影响是增加 £35（现金上升 £45，存货下降 £10）。由于收到的现金（£45）大于所用物料的成本（£10），企业获得了利润。
This profit belongs to the owner, so equity must increase by the profit amount. Profit is calculated as revenue minus the cost of goods sold. For now, revenue is £45, and the cost of the supplies used is £10, giving a gross profit of £35. Therefore, equity increases by £35. The accounting equation after this transaction: assets £85 (cash £65 + juicer £20), liabilities £0, equity £85 (capital £50 + profit £35).
这部分利润归属于所有者，因此权益必须增加利润的金额。利润的计算方法是收入减去所售商品的成本。此时，收入为 £45，所用物料成本为 £10，毛利为 £35。因此，权益增加 £35。交易后的会计等式为：资产 £85（现金 £65 + 榨汁机 £20），负债 £0，权益 £85（资本 £50 + 利润 £35）。
7. Transaction 5: Paying an Expense | 交易五：支付费用
Tom pays £5 cash for his market stall rental. Rent is an expense that reduces profit. Unlike buying an asset, paying rent gives no lasting resources – the benefit is used immediately. Cash decreases by £5, and because this lowers profit, equity also decreases by £5.
汤姆支付了 £5 现金作为市场摊位租金。租金是一项费用，会减少利润。与购买资产不同，支付租金不会带来持久的资源——它所带来的利益会立即消耗。现金减少 £5，同时由于这会减少利润，权益也减少 £5。
After the rent payment, assets fall to £80 (cash £60 + juicer £20). Equity becomes £80 (initial capital £50 + profit before rent £35 – rent expense £5). The equation is £80 = £0 + £80. Notice that the juicer was not affected by any of these later transactions – it remains a non-current asset at its original cost.
支付租金后，资产降至 £80（现金 £60 + 榨汁机 £20）。权益变为 £80（初始资本 £50 + 租金前利润 £35 – 租金费用 £5）。等式为 £80 = £0 + £80。请注意，榨汁机并未受到后面这些交易的任何影响——它仍按其原始成本作为非流动资产保留在账面上。
8. Calculating Profit: A Simple Income Statement | 计算利润：简易利润表
An income statement summarises revenue and expenses to show how much profit or loss was made over a period. Using Tom’s transactions, we can draw up this statement:
利润表汇总了一段期间内的收入和费用，以显示赚取了多少利润或发生了多少亏损。利用汤姆的交易，我们可以编制出这样一张报表：
| Revenue (Sales) | £45 |
| Less: Cost of supplies used | (£10) |
| Gross Profit | £35 |
| Less: Rent expense | (£5) |
| Net Profit | £30 |
The income statement clearly shows that after covering the cost of lemons and sugar and paying the stall rental, Tom earned a net profit of £30. The juicer does not appear here because its cost is not used up in a single day – it is treated as an asset.
利润表清晰地显示，在弥补了柠檬和糖的成本并支付了摊位租金后，汤姆赚取了 £30 的净利润。榨汁机没有出现在这里，因为其成本并不是在一天内消耗掉的——它被当作资产处理。
9. Drawing Up a Statement of Financial Position | 编制财务状况表
The statement of financial position (sometimes called a balance sheet) lists the assets, liabilities and equity at the end of the period. For Tom’s lemonade stand, after all five transactions, it looks like this:
财务状况表（有时也称为资产负债表）列示了期末的资产、负债与权益。对于汤姆的柠檬水摊，在完成所有五笔交易后，情况如下：
| Non-current assets | |
| Equipment (juicer) | £20 |
| Current assets | |
| Cash | £60 |
| Total assets | £80 |
| Equity | |
| Capital introduced | £50 |
| Retained profit | £30 |
| Total equity | £80 |
Notice how total assets exactly equal total equity. There are no liabilities, which is common for a small, debt-free business. The juicer stays on the statement as a non-current asset, and the cash balance reflects all the cash flows that have occurred.
请注意，总资产恰好等于总权益。没有负债，这对于一家无债务的小型企业来说很常见。榨汁机作为非流动资产留在报表上，而现金余额则反映了已发生的全部现金流。
10. Checking the Trial Balance | 检查试算平衡
A trial balance is a quick check that every transaction has been recorded with equal debits and credits. In our simplified cash and equity scenario, we list the balances of all accounts: Equipment (debit) £20, Cash (debit) £60, Capital (credit) £50, Profit (credit) £30. Total debits = £80, total credits = £80. They match, so we can be confident no arithmetic mistake has been made.
试算平衡表是一种快速检查方式，用来验证每笔交易是否都以相等的借方和贷方入账。在我们这个简化的现金和权益情景中，我们列出所有账户余额：设备（借方）£20，现金（借方）£60，资本（贷方）£50，利润（贷方）£30。借方合计 = £80，贷方合计 = £80。两者相符，因此我们可以确信没有算术错误。
If you ever find that total debits do not equal total credits, check each transaction carefully. Common errors include recording only one side of a transaction, swapping figures or forgetting to carry a minus sign. A trial balance helps catch those slips before you produce the final statements.
如果你发现借方总额不等于贷方总额，请仔细检查每一笔交易。常见错误包括只记录了交易的单边、数字颠倒或忘记带上负号。试算平衡表有助于在出具最终报表前发现这些疏漏。
11. Key Takeaways from the Case Study | 案例关键要点
This case study reinforces several essential concepts for Year 7 accounting. First, always classify items as assets (things of lasting value) or expenses (things used up immediately). The juicer is an asset; rent is an expense. Second, profit increases equity, while expenses and owner’s drawings (if any) decrease it. Third, every transaction must keep the accounting equation in balance, and a trial balance is your safety net.
本案例强化了七年级会计的几个核心概念。首先，务必将项目区分为资产（具有持久价值的东西）或费用（立即消耗的东西）。榨汁机是资产；租金是费用。其次，利润增加权益，而费用和所有者提款（如果有）则会减少权益。第三，每笔交易都必须保持会计等式的平衡，而试算平衡表就是你的安全网。
Another vital lesson is that buying supplies is not an immediate expense. Inventory is an asset until it is used or sold. Understanding this timing difference prevents profit from being distorted in the wrong period. Always ask yourself: ‘Has the economic benefit been used up yet?’
另一个重要的教训是，购买物料并不是一项即时费用。存货在耗用或出售前都是一项资产。理解这一时点差异，可以防止利润被错误地计入不恰当的期间。永远要问自己：“经济利益是否已经被消耗掉了？”
12. Practice Exercises: Extend the Case | 练习题：扩展案例
Now try applying what you have learned by adding a few extra transactions to Tom’s second trading day. Use the same starting position: cash £60, juicer £20, capital £50 and retained profit £30.
现在，试着应用所学知识，给汤姆的第二个营业日增加几笔额外的交易。使用相同的初始状态：现金 £60，榨汁机 £20，资本 £50 和留存利润 £30。
- Tom buys more supplies for £15 cash.
- He sells lemonade for £50 cash (all new supplies are used).
- He pays an assistant £8 wages.
- He withdraws £10 cash for personal use (this is called ‘drawings’).
- 汤姆用现金 £15 购买更多物料。
- 他卖出柠檬水，收入现金 £50（所有新物料全部用完）。
- 他支付助手工资 £8。
- 他提取 £10 现金自用（这称为“提款”）。
For each transaction, update the accounting equation and then prepare an income statement and a statement of financial position. Remember: drawings reduce equity but are not an expense in the income statement. Can you prove that total assets still equal total equity plus liabilities at the end?
针对每笔交易，更新会计等式，然后编制利润表和财务状况表。记住：提款会减少权益，但不是利润表中的费用。你能证明在期末总资产仍然等于总权益加负债吗？
Published by TutorHao | Accounting Revision Series | aleveler.com
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