シャドーイング練習: What's the tallest skyscraper anyone can build? - 動画で英語スピーキングを学ぶ

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Hi, it's Doug.

Have you ever played the game Jenga?

Some people are able to build some pretty tall towers.

Like, check out this, the world record.

This person piled 485 blocks on one single Jenga block.

That's some amazing balancing skills.

Someone named Ashley has a question about building things.

Let's give Ashley a call now.

Hi, Doug.

Hi, Ashley.

I have a question for you.

What's the tallest skyscraper anyone can build?

Oh, that's a great question.

Humans have been trying to build super tall things for a long time.

Before skyscrapers were invented, pyramids were the tallest objects built on Earth.

Take a look at this one.

It's called the Great Pyramid of Giza.

Builders stacked over 2 million heavy stone blocks to make it that high.

The pyramid was the tallest human -made thing on Earth for almost 4 ,000 years until this came along.

This is the Lincoln Cathedral, and it was once over 500 feet tall.

But then something happened.

If you've ever built a tower with blocks, you've probably noticed that the taller you build, the harder it gets.

And that's what happened to the Lincoln Cathedral.

The tallest part toppled over during a storm.

It was just too tall.

When it was built, people just couldn't build things that were very tall yet.

Before I go on, I'm curious.

Why couldn't those earlier pyramids and cathedrals be built as high as skyscrapers are today?

What do you think?

Now would be a good time to pause the video and discuss.

Okay, you ready?

Well, I'm not sure how you answered, but you might think that the earlier buildings weren't made of very strong materials.

But that's not really what's most important.

Bricks and stone blocks are incredibly strong.

It turns out it's the piling up of bricks or stone blocks that creates the problem.

You see, buildings back then were made by piling bricks or stones on top of each other.

The taller the building, the more bricks they would use.

And the more bricks they would use, the heavier the building would get.

If it got too heavy, it could collapse from its own weight, or it could topple over.

So the piling up of bricks or stone blocks is what kept people from making really tall buildings.

Since then, we've figured out how to build even taller buildings, buildings that are way taller than the first pyramids and cathedrals,

buildings that seem to scrape the sky.

These buildings, called skyscrapers, are now the tallest human -made objects on Earth, and they don't fall down.

How is that even possible?

Well, building a skyscraper involves a totally different way of creating a building.

Rather than stacking up building blocks, the way they did with pyramids, or the way you do in Jenga,

it involves giving the building a skeleton or structure on the inside.

This new way of building led to the first ever skyscraper, the Home Insurance Building in Chicago.

Instead of building with piled up bricks, it was built with a steel skeleton.

And since the skeleton was holding the building up, the rest of the building, like walls and windows, could be hung on the steel beams,

like pictures hang on walls.

And since those walls didn't need to be made out of piled up bricks anymore, they could be really light.

At least much less heavy than building materials of the past.

This changed everything.

By building with steel skeletons instead of heavy bricks, builders could build taller than ever.

Now, even with a skeleton, there was another thing that could knock it over.

Wind.

A skyscraper is like a giant sail.

The taller it is, the more wind pushes into it, and those winds can actually knock a skyscraper down.

So skyscraper builders are constantly trying to find ways to get around this problem, like the builders of this skyscraper did.

This is one of the tallest skyscrapers in the world.

You see the shape of the sides?

Why do you think they built it this way?

It's all because of the wind.

The spiral shape helps the wind twist around it instead of crashing into it.

And take a look at this one.

You notice the top?

Some Some skyscrapers are even built with holes in them so that the wind blows straight through.

Now by inventing new ways to trick the wind,

we've been able to build from 88 floors to 101 floors to the tallest skyscraper in the world, currently the Burj Khalifa.

It's 163 floors tall.

And that brings us back to our question.

How tall can a skyscraper be?

Well, no one really knows for sure how tall, but we are sure of this.

We can build a lot higher than the skyscrapers we have today.

In fact, builders in Japan are planning to build a skyscraper that's one mile tall.

It's called the Sky Mile Tower, and when it's finished, it will be more than 10 times the height of the Great Pyramid of Giza.

That's twice as tall as the tallest skyscraper we have now.

That's all for this week's question.

Thanks Ashley for asking it.

Now with Valentine's Day coming up, I picked out three questions from the question jar that all have something to do with the heart.

When this video is done playing, you'll get to vote on one.

You can choose from, does your heart grow?

Which animal has the biggest heart?

Or what's inside your heart?

So submit your vote when the video's over.

I want to hear from all of you watching.

There are mysteries all around us.

Stay curious and see you next week.

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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「What's the tallest skyscraper anyone can build?」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：skyscraper, tall, build, bricks, tallest。この動画には、シャドーイング用の文が72文、単語が945語あります。音声の長さは6:02です。話す速さは1分あたり約157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
brick 名詞	/ˈbɹɪk/	煉瓦
pyramid 名詞	/ˈpɪɹ.ə.mɪd/	ピラミッド, 金字塔
pile 名詞	/paɪl/	積み重ね, 山
builder 名詞	/ˈbɪl.dəɹ/	建設者
skeleton 名詞	/ˈskɛlətən/	骨格, 骸骨
curious 形容詞	/ˈkjʊɹ.i.əs/	好奇心の強い, 知りたがる
knock 動詞	/nɑk/	ノックする, 叩く
stack 名詞	/stæk/	塚
cathedral 名詞	/kəˈθiːdɹəl/	大聖堂
invent 動詞	/ɪnˈvɛnt/	発明する
trick 名詞	/ˈtɹɪk/	欺き, 企み
mystery 名詞	/ˈmɪs.t(ə.)ɹi/	ミステリー, 不思議
skill 名詞	/skɪl/	腕, 技
submit 動詞	/səbˈmɪt/	提出する
twist 動詞	/twɪst/	捻る

動画に出てくる句動詞

単語	発音	意味
check out 動詞		試験する, 検査する
come up 動詞		上がる, 登る
fall down 動詞	/fɔl ˈdaʊn/	落ちる

繰り返し練習したい文

動画に出てくる短く完結した文です。日常会話でそのまま使えます。

What's the tallest skyscraper anyone can build?
What do you think?
You see the shape of the sides?
Why do you think they built it this way?
You notice the top?

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
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	were invented · was built · be built
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	Have you ever played · you've ever built · we've figured
最上級 the -est / the most … — グループの中で一番	the tallest · the biggest
比較級 -er than / more … than — 二つのものを比べる	taller than · less heavy than · higher than

注意したい発音

話し手はcouldn't, I'm, we'veなど、短縮形や弱形を13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。

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: builder /ˈbɪl.dəɹ/, cathedral /kəˈθiːdɹəl/, incredibly /ɪŋˈkɹɛdɪbli/, spiral /ˈspaɪɹəl/
/v/ — /b/ にならないように、上の歯を下唇に当てる: involve /ɪnˈvɑlv/, invent /ɪnˈvɛnt/
子音の連続 — 間に母音を入れない: brick /ˈbɹɪk/, skeleton /ˈskɛlətən/, curious /ˈkjʊɹ.i.əs/, involve /ɪnˈvɑlv/, stack /stæk/

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。brick, pyramid, pile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: What's the tallest skyscraper anyone can build? - 動画で英語スピーキングを学ぶ

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