Basic Principles of Finance | 金融学基础原理

📚 Basic Principles of Finance | 金融学基础原理

Finance is the study of how money is created, managed and exchanged. It connects savers with borrowers and helps people allocate resources across time and risk. Understanding the basic principles of finance is essential for explaining how modern economies work.

金融学是研究货币如何创造、管理与交换的学科。它将储蓄者与借款人连接起来，帮助人们在不同时间和风险条件下配置资源。理解金融学基础原理，是解释现代经济运行机制的重要前提。

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1. What Is Finance? The Role of the Financial System | 什么是金融？金融体系的作用

In economics, finance is not simply “money”. It is the system that transfers funds from economic units with surplus savings to units with investment opportunities. A well-functioning financial system improves the allocation of capital and can raise productivity and economic growth.

在经济学中，金融并不等同于“货币”。它是一套将拥有盈余储蓄的经济主体，与拥有投资机会的经济主体联系起来的系统。一个运行良好的金融体系能够改善资本配置，提升生产率并促进经济增长。

The financial system includes financial markets, financial intermediaries and financial instruments. Together they determine the cost of credit, the return on savings and the level of risk borne by different participants.

金融体系包括金融市场、金融中介和金融工具。它们共同决定了信贷成本、储蓄回报以及不同参与者所承担的风险水平。

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2. Money: Definition and Functions | 货币的定义与职能

Money is any generally accepted medium of exchange. In economics, money has four core functions: a medium of exchange, a unit of account, a store of value and a standard of deferred payment.

货币是普遍接受的交换媒介。在经济学中，货币具有四大核心职能：交换媒介、记账单位、价值贮藏和延期支付标准。

For any asset to work well as money, it should have the following qualities:

一种资产若想很好地充当货币，应具备以下特征：

• Acceptability: traders accept it as payment. / 可接受性：交易者愿意接受它作为支付手段。

• Durability and divisibility: it lasts and can be split. / 耐久性和可分性：它经久耐用且能分割。

• Portability and scarcity: it is easy to carry and limited in supply. / 便携性和稀缺性：它便于携带且供给有限。

• Relative stability of value: inflation reduces its usefulness. / 价值相对稳定：通货膨胀会削弱货币的职能。

Central banks control the supply of money. When money supply grows faster than real output, the purchasing power of each unit may fall, creating inflation.

中央银行控制货币供应量。当货币供给增长快于实际产出时，每个单位的购买力可能下降，从而产生通货膨胀。

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3. Financial Intermediaries and Banks | 金融中介与银行

Financial intermediaries stand between savers and borrowers. Banks, building societies, insurance companies and pension funds collect deposits or premiums and channel them into loans and investments.

金融中介位于储蓄者和借款者之间。银行、建房互助协会、保险公司和养老基金收集存款或保费，并将其引入贷款和投资中。

Banks perform two vital functions: maturity transformation and risk transformation. Maturity transformation means banks borrow short-term deposits and lend long-term, while risk transformation means they pool many risks to protect depositors.

银行履行两项关键职能：期限转换和风险转换。期限转换是指银行吸收短期存款并发放长期贷款；风险转换是指银行汇集多种风险以保护存款人。

This creates a potential problem. If a bank fails, depositors may lose funds and confidence in the whole system can collapse. This is why banking supervision is important.

这也会带来潜在问题。如果银行倒闭，存款人可能损失资金，公众对整个体系的信心也可能崩溃。因此，银行监管至关重要。

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4. The Central Bank and Monetary Policy | 中央银行与货币政策

The central bank is the public authority that manages a country’s currency, money supply and interest rates. It often acts as banker to the government, supervisor of banks and lender of last resort.

中央银行是管理一国货币、货币供应量和利率的公共机构。它通常充当政府的银行、银行的监管者以及最后贷款人。

Monetary policy uses various tools to influence aggregate demand:

货币政策运用多种工具来影响总需求：

Tool / 工具	Mechanism / 机制
Interest rates / 利率	Higher rates raise the cost of borrowing and lower investment and consumption. / 利率上升提高借贷成本，抑制投资与消费。
Reserve requirements / 存款准备金率	Lower required reserves allow banks to create more credit. / 降低法定准备金率使银行创造更多信贷。
Open market operations / 公开市场操作	Buying assets injects money; selling them removes money. / 买入资产注入货币，卖出资产回笼货币。

In a downturn, central banks may cut interest rates or engage in quantitative easing to stimulate spending. When inflation is too high, they may raise rates to cool demand.

在经济低迷时，央行可能降息或实施量化宽松以刺激支出；当通胀过高时，央行可能加息以给需求降温。

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5. Interest Rates: The Price of Money | 利率：货币的价格

The interest rate is the reward for lending and the cost of borrowing. It is often called the “price of money”, although money itself has no direct price except through interest.

利率是借贷的报酬，也是借款的成本。它常被称为“货币的价格”，尽管货币本身唯有通过利率才对价格产生影响。

Economists distinguish nominal interest rates from real interest rates. The real interest rate adjusts for expected inflation and can be approximated by the Fisher equation:

经济学家区分名义利率与实际利率。实际利率根据预期通胀进行调整，可用费雪方程式近似表述：

real interest rate ≈ nominal interest rate − expected inflation

实际利率 ≈ 名义利率 − 预期通货膨胀率

If expected inflation is 3% and the nominal rate is 5%, the real rate is about 2%. This matters for borrowers and lenders because it shows the real value of future repayments.

如果预期通胀率为3%，名义利率为5%，则实际利率约为2%。这对借贷双方都很重要，因为它反映了未来还款的实际价值。

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6. Bonds and Present Value | 债券与现值

A bond is a debt security that obliges the issuer to make fixed coupon payments and repay the principal at maturity. Governments and companies issue bonds to borrow large sums.

债券是一种债务证券，发行人有义务按期支付固定票息，并在到期日偿还本金。政府和公司

Published by TutorHao | Economics Revision Series | aleveler.com

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