シャドーイング練習: How Does an Economy Actually Work? - 動画で英語スピーキングを学ぶ

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Imagine you wake up tomorrow and someone tells you the entire U .S economy has disappeared.

Not the buildings, not the factories, not the people, just the money.

Every dollar in every bank account is suddenly zero.

It sounds like civilization is over.

But here's the strange part.

The economy itself would still exist.

The workers would still know how to build houses.

Farmers would still know how to grow food.

Engineers could still design computers.

Trucks could still move products across the country.

The economy isn't the money.

Money is the scoreboard.

The economy is everything people produce, sell, buy, invest, and exchange.

And once you understand that, the entire machine starts making sense.

So what actually makes an economy grow?

Where does money come from?

Why can a country print more dollars but not simply become richer?

Why do interest rates affect your rent,

your job, your investments, and even whether a company builds a new factory? and what actually happens when the economy breaks.

By the end, you can look at almost any country and understand what its economy is doing.

Start with the simplest possible economy.

Imagine an island with five people.

One person grows food, one builds houses, one catches fish, one makes clothing, and one transports everything between them.

Nobody has everything they need, so they trade.

The farmer needs clothes, the fisherman needs a house, the builder needs food, The transporter needs all of them.

They have created an economy without a single dollar.

Then someone invents money.

Suddenly, instead of trading three fish for a shirt and hoping the clothing maker actually wants fish, everyone can use the same medium of exchange.

Money makes the economy easier to coordinate.

But it doesn't create the food, houses, clothing, or transportation.

Production does that.

This is the first concept you need to understand.

An economy ultimately runs on production.

If a country produces more useful goods and services with the same amount of resources, its economy can become richer.

If it simply creates more pieces of currency without producing more things, it hasn't magically created more wealth.

Economists measure a huge part of that production using something called GDP, or Gross Domestic Product.

In simple terms, GDP measures the value of final goods and services produced within an economy over a period of time,

And the accounting identity is surprisingly simple.

Consumption, plus investment, plus government spending, plus exports, minus imports.

Think of the economy like a giant circular conveyor belt.

Consumers buy things from businesses.

Businesses receive revenue and use that money to pay workers, suppliers, landlords, lenders, and shareholders.

Workers receive income and spend part of it buying things from other businesses.

Governments collect taxes and spend money on public services, infrastructure, transfers, and other activities.

Banks and financial markets move savings toward borrowers who want to invest.

And the rest of the world buys American products while Americans buy foreign products.

The same dollar can move through this system many times.

You spend $20 at a restaurant.

The restaurant uses part of that $20 to pay a worker.

The worker uses some of their paycheck at a grocery store.

The grocery store pays a supplier.

The supplier pays its employees.

The money keeps moving.

But don't confuse money moving with wealth being created.

If you move the same dollar around faster, you haven't automatically doubled the amount of food, houses, software, cars, or medical care available.

Real economic growth requires more or better production.

And this is where consumers become extremely important.

In the United States, consumer spending is one of the largest components of economic activity.

When millions of households by groceries, cars, phones, restaurant meals, airline tickets, streaming subscriptions, and everything else.

Businesses receive revenue.

That revenue gives them a reason to keep producing and hiring.

But businesses aren't charities.

They spend money because they expect to eventually make more money than they spend.

Imagine a company wants to build a factory costing $100 million.

It has two basic options.

It can use money it already has.

Or it can borrow.

If borrowing costs are low and management expects strong demand for its products, the factory might make financial sense.

If borrowing costs are high and customers aren't buying, the same factory becomes much harder to justify.

This is why interest rates matter so much.

The Federal Reserve influences the federal funds rate, the overnight rate at which banks lend reserves to each other.

Changes in that rate influence other borrowing costs and can affect household and business spending, employment and inflation.

Now imagine the Fed raises interest rates.

Your hypothetical mortgage becomes more expensive.

A company's new loan becomes more expensive.

Credit cards can become more expensive.

Investors may demand higher returns from other assets.

Some people postpone buying homes.

Some companies postpone expansion.

Now reverse it.

If borrowing becomes cheaper, households and businesses may have more incentive to borrow and spend.

A company that rejected a $100 million factory at 9 % financing might reconsider it at a much lower cost.

This doesn't mean lower interest rates automatically make an economy better or higher rates automatically make it worse.

The point is that monetary policy changes the incentives running through the machine, and then we reach one of the most misunderstood parts of the economy.

Inflation.

Suppose there are 100 pizzas and $1 ,000 chasing those pizzas.

Now imagine there are still only 100 pizzas, but suddenly there is $2 ,000 chasing them.

The economy hasn't doubled the number of pizzas.

There is simply more money competing for the same amount of stuff.

That's an extremely simplified example, because real inflation is far more complicated.

Prices can change because of demand, supply constraints, wages, energy costs, expectations, exchange rates, and many other factors.

But the important idea is that the amount of money is not the same thing as the amount of real stuff.

This is why a country cannot simply print its way into permanent prosperity.

If printing money created real wealth by itself, every country could become rich overnight.

Instead, the productive capacity of the economy matters.

Factories, infrastructure, technology, education, workers, natural resources, businesses, intellectual property,

and the systems that allow all of those things to work together.

Now let's bring the government into the machine.

The government collects taxes, but it also spends.

100

It builds roads.

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It pays employees.

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It purchases goods and services.

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It funds programs.

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It transfers money to households.

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And when government spending exceeds government revenue, the government generally needs to borrow to cover the difference.

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That borrowing creates government debt.

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Debt isn't automatically the same thing as economic collapse.

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Governments borrow for many reasons, including financing spending over time and funding investments.

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The more important question is what the borrowed money is financing, how expensive the debt is to service, and whether the government's finances remain sustainable.

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Now add another character, the bank.

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When you deposit money in a bank, the bank doesn't necessarily put your exact dollars into a vault with your name on them.

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Banking is built around financial intermediation.

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Banks take deposits and other funding, and make loans, subject to regulation, capital requirements, liquidity requirements, and risk management.

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That means banks connect people who have money with people who need money.

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One person wants to save.

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Another wants to buy a house.

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Another wants to start a business.

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Another wants to expand a factory.

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The financial system helps connect those needs, but also creates vulnerability.

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If banks become afraid to lend, businesses can struggle to finance expansion.

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If households become heavily indebted and start cutting spending, businesses can lose customers.

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If financial institutions suffer large losses, the problem can spread through the credit system.

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That's one reason recessions can become self -reinforcing.

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Imagine a company sees customers spending less.

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It cuts production.

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It needs fewer workers.

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Some workers lose income.

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Those workers spend less.

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Other companies lose customers.

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They cut production too.

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Suddenly, the original decline and spending has created a chain reaction.

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This is why economists pay attention to things like consumer spending, employment, business investment, credit conditions, inflation, and financial markets.

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They're not separate stories.

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They're connected parts of the same machine.

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And then there is international trade.

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The United States doesn't produce everything Americans consume.

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Americans buy products and services from other countries, while American companies sell products and services around the world.

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Exports bring foreign demand into the domestic economy.

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Imports give consumers and businesses access to foreign -produced goods and services.

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In GDP accounting, exports are added and imports are subtracted because GDP measures domestic production rather than total spending.

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This creates another important distinction.

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A trade deficit doesn't literally mean America is losing money every time it imports something.

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It means the value of imports exceeds the value of exports over the measured period.

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The economic consequences depend on what is being imported, what is being exported, how the transactions are financed, and what happens to investment and income.

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And now you can start seeing why an economy can look healthy in one area and weak in another.

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In the second quarter of 2026, U .S real GDP increased at an annual rate of 1 .5%.

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Consumer spending, exports and investment contributed to growth, while government spending decreased and imports increased.

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That one number, 1 .5%, doesn't tell you everything about the economy.

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GDP can grow while some households struggle.

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Businesses can be profitable while unemployment rises in certain industries.

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Stock markets can rise while housing remains unaffordable for many people.

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Inflation can fall while prices remain much higher than they were several years earlier.

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The economy isn't one number.

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It's millions of decisions happening simultaneously.

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You decide whether to buy a phone.

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A company decides whether to hire you.

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A bank decides whether to approve a loan.

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An investor decides whether to buy a bond.

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A business decides whether to build a factory.

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The government decides how much to tax and spend.

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The central bank decides how to conduct monetary policy.

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Multiply those decisions by hundreds of millions of people

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and millions of businesses and you get something that looks almost impossible to understand.

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But underneath the complexity, the basic machine is surprisingly simple.

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People work.

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Businesses produce.

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Consumers spend.

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Banks allocate credit.

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Governments tax and spend.

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The financial system moves capital.

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Countries trade.

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And prices coordinate the whole thing.

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When demand rises, businesses have an incentive to produce more.

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When supply becomes scarce, prices can rise.

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When prices rise too quickly, households lose purchasing power and policymakers may respond.

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When borrowing becomes expensive, spending and investment can slow.

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When productivity improves, the economy can potentially produce more with the same resources.

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Productivity is one of the most important pieces of the entire puzzle.

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Imagine two factories.

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Factory A has 100 workers producing 10 ,000 products.

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Factory B has the same 100 workers but produces 20 ,000 products because it has better machines, software, processes, and training.

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Factory B has higher productivity.

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If an economy continuously becomes better at transforming labor, capital, energy, technology, and resources into useful products and services,

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its productive capacity can rise.

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That's one reason technological innovation matters so much.

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A new technology isn't valuable merely because it's impressive.

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It becomes economically important when it allows people and businesses to produce more, faster, cheaper, or better.

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And this is where the economy's long -term story separates from its short -term story.

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In the short run, economies can be pushed around by interest rates, consumer confidence, government spending, financial shocks,

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energy prices, wars, supply disruptions, and other events.

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Over the long run, however, productivity, population, capital investment, institutions,

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education, technology, and resource availability play major roles in determining how much an economy can produce.

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So if you want to understand whether an economy is actually getting stronger, Don't stare at one number.

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Look underneath the number.

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Are businesses investing?

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Are workers becoming more productive?

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Is employment growing?

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Are households increasing or reducing their spending?

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Is inflation stable?

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Are financial institutions healthy?

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Is the government able to manage its debt?

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Is the country attracting investment?

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Is productivity improving?

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Because an economy isn't a bank account.

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It's a living network of people, businesses, institutions, technology, capital, resources, and decisions.

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And that's the biggest misconception about economics.

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People imagine the economy as something sitting somewhere in Washington, New York, or inside a computer at the Federal Reserve.

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It isn't.

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The economy is happening every time someone goes to work, buys groceries, opens a business, takes out a loan, builds a house,

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writes software, ships a product, pays taxes, invests money, or decides not to spend it.

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Every transaction is another thread in the machine, and when enough of those threads move in the same direction, you get growth, inflation, recession, or recovery.

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So when someone asks, how does a country's economy actually work, the answer isn't simply GDP.

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GDP is the scoreboard.

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The real economy is the game, and the game is people turning resources,

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labor, capital, technology, and ideas into things other people are willing to pay for.

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And that's the biggest misconception about economics.

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The economy isn't the money.

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The money is just the system we use to measure and exchange what the economy produces.

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このレッスンの語彙とスピーキングのポイント

このスピーキングレッスンは、動画「How Does an Economy Actually Work?」を教材にしています。繰り返し出てくる語は次のとおりです：economy, businesses, spending, bank, worker。この動画には、シャドーイング用の文が218文、単語が2185語あります。音声の長さは13:48です。話す速さは1分あたり約158語で、日常会話に近い自然なペースです。単語の83%は英語の頻出3,000語に含まれます。残りは練習の前に確認しておきましょう。

この動画の重要語彙

動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。

単語	発音	意味
inflation 名詞	/ɪnˈfleɪ.ʃən/	インフレ, インフレーション
import 名詞	/ˈɪm.pɔɹt/	輸入品
export 名詞	/ˈɛks.pɔɹt/	輸出品
productivity 名詞	/ˌpɹɒdʌkˈtɪvəti/	生産性
borrow 動詞	/ˈbɑɹ.oʊ/	借りる
pizza 名詞	/ˈpi.tsə/	ピザ, ピッツァ
invest 動詞	/ɪnˈvɛst/	投入する
clothing 名詞	/ˈkloʊðɪŋ/	服, 衣服
productive 形容詞	/pɹəˈdʌk.tɪv/	生産的
incentive 名詞	/ɪnˈsɛntɪv/	動機, 誘因
supplier 名詞	/səˈplaɪə/	サプライヤー, 供給者
infrastructure 名詞	/ˈɪnfɹəˌstɹʌkt͡ʃə/	インフラストラクチャ, インフラ
chase 動詞	/t͡ʃeɪs/	追いかける, 追跡する
thread 名詞	/ˈθɹɛd/	糸
worker 名詞	/ˈwɝ.kɚ/	労働者, 勤労者

動画に出てくる句動詞

単語	発音	意味
take out 動詞		取り出す
wake up 動詞	/ˌweɪk ˈʌp/	目覚める, 目を覚ます

この動画の文法

話し手がよく使っている文型を、動画の実際の表現とともに紹介します。

文型	動画での表現
現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している	has disappeared · have created · haven't automatically doubled
受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる	being created · is built · are added

注意したい発音

話し手はisn't, doesn't, aren'tなど、短縮形や弱形を23回使っています。聞こえたとおりの短い形で発音しましょう。

「th」の音: clothing /ˈkloʊðɪŋ/, thread /ˈθɹɛd/, underneath /ˌʌndɚˈniθ/, hypothetical /ˌhaɪpəˈθɛtɪkəl/
「sh」と「zh」の音: inflation /ɪnˈfleɪ.ʃən/, transaction /tɹænˈzækʃən/, recession /ɹɪˈsɛʃn̩/, shock /ʃɔk/, potentially /pəˈtɛnʃ(ə)li/
長い単語（アクセントの位置に注意）: productivity /ˌpɹɒdʌkˈtɪvəti/, infrastructure /ˈɪnfɹəˌstɹʌkt͡ʃə/, economics /ˌiːkəˈnɒmɪks/, monetary /ˈmʌnɪtəɹi/, surprisingly /səˈpɹaɪzɪŋli/

日本語話者が苦手な音：

/r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: surprisingly /səˈpɹaɪzɪŋli/, necessarily /ˌnɛs.əˈsɛɹ.ə.li/, regulation /ˌɹɛɡjʊˈleɪʃən/, airline /ˈɛɹˌlaɪn/, profitable /ˈpɹɑ.fɪ.tə.bl̩/
/v/ — /b/ にならないように、上の歯を下唇に当てる: productivity /ˌpɹɒdʌkˈtɪvəti/, invest /ɪnˈvɛst/, productive /pɹəˈdʌk.tɪv/, incentive /ɪnˈsɛntɪv/, overnight /əʊvə(ɹ)ˈnaɪt/
/f/ — 「フ」ではなく、上の歯と下唇で出す: inflation /ɪnˈfleɪ.ʃən/, infrastructure /ˈɪnfɹəˌstɹʌkt͡ʃə/, farmer /ˈfɑɹ.mɚ/, suffer /ˈsʌfɚ/, fewer /ˈfjuː.ɚ/

この動画での練習方法

まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
まず0.75倍速で一文ずつシャドーイングし、慣れてきたら通常の速度に戻します。
自分の声を録音して元の音声と比べます。inflation, import, exportなどの単語に特に注意しましょう。

シャドーイングとは？英語上達に効果的な理由

シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。

シャドーイングのやり方: ステップ別の完全ガイドを読む →

シャドーイング練習: How Does an Economy Actually Work? - 動画で英語スピーキングを学ぶ

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