シャドーイング練習: The Beginning of Everything -- The Big Bang - 動画で英語スピーキングを学ぶ

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The beginning of everything, the Big Bang.

The idea that the universe was suddenly born and is not infinite.

Up to the middle of the 20th century, most scientists thought of the universe as infinite and ageless.

Until Einstein's theory of relativity gave us a better understanding of gravity

and Edwin Hubble discovered that galaxies are moving apart from one another in a way that fits previous predictions.

In 1964, by accident, cosmic background radiation was discovered, a relic of the early universe,

which together with other observational evidence made the Big Bang the accepted theory in science.

Since then, improved technology like the Hubble telescope has given us a pretty good picture of the Big Bang

and the structure of the cosmos.

Recent observations even seem to suggest that

The expansion of the universe is accelerating.

But how did this

Big Bang work?

How can something come from nothing?

Let's explore what we know.

We can ignore the beginning part for now.

First of all, the Big Bang was not an explosion.

It was all space, stretching everywhere, all at once.

The universe started very, very, very small and quickly expanded to the size of a football.

The universe didn't expand into anything, space was just expanding into itself.

The universe cannot expand into anything because the universe has no borders, there is by definition no outside the universe.

The universe is all there is.

In this hot, dense environment, energy manifested itself in particles that existed only for the tiniest glimpses of time.

From gluons, pairs of quarks were created, which destroyed one another, perhaps after giving off more gluons.

These found other short -lived quarks to interact with, forming new quark pairs and gluons again.

Matter and energy were not just theoretically equivalent, it was so hot, they were practically the same stuff.

Somewhere around this time, matter won over antimatter.

Today, we're left with almost all matter and nearly no antimatter at all.

Somehow, 1 billion and 1 matter particles were formed for every 1 billion particles of antimatter.

Instead of one massive ultimate force in the universe, there were now several refined versions of it acting under different rules.

By now, the universe has stretched to a billion kilometers in diameter, which leads to a decrease in temperature.

The cycle of quarks being born and converted back to energy suddenly stops.

From now on we work with what we have.

Quarks begin forming new particles, hadrons, like protons and neutrons.

There are many many combinations of quarks that can form all sorts of hadrons

but only very few are reasonably stable for any length of time.

Please take a moment to appreciate that by now only one second has passed since the beginning of everything.

The universe

which has grown to 100 billion kilometers is now cold enough

to allow most of the neutrons to decay into protons

and form the first atom hydrogen imagine the universe at this

point as an extremely hot soup 10 billion degrees celsius filled with countless particles

and energy over the next few minutes things cooled

and settled down very fast atoms formed out of hadrons and electrons making for a stable and electrically neutral environment.

Some call this period the Dark Age because there were no stars

and the hydrogen gas didn't allow visible light to move around.

But what's the meaning of visible light anyway when there's nothing alive yet that could have eyes?

When the hydrogen gas clumped together after millions of years and gravity put it under great pressure, stars and galaxies began to form.

Their radiation dissolved the stable hydrogen gas into a plasma that still permeates the universe today and allows visible light to pass.

Finally, there was light.

Okay, but what about the part we didn't talk about?

What happened right at the beginning?

This part can be defined as the Big Bang.

We don't know at all what happened here.

At this point, our tools break down.

Natural laws stop making sense.

Time itself becomes wibbly -wobbly.

To understand what happened here, we need a theory that unifies Einstein's relativity and quantum mechanics, something countless scientists are working on right now.

But this leaves us with lots of unanswered questions.

Were there universes before our own?

Is this the first and only universe?

What started the Big Bang?

Or did it just occur naturally based on laws we don't understand yet?

We don't know, and maybe we never will.

But what we do know is that the universe as we know it started here and gave birth to particles,

galaxies, stars, the Earth and you.

Since we ourselves are made of dead stars, we are not separate from the universe.

We are part of it.

You could even say that we are the universe's way of experiencing itself.

So let's keep on experiencing it until there are no more questions to ask.

Thank you.

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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「The Beginning of Everything -- The Big Bang」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：universe, Bang, quark, particles, billion。この動画には、シャドーイング用の文が58文、単語が827語あります。音声の長さは5:54です。話す速さは1分あたり約140語で安定しており、シャドーイングしやすいペースです。単語の82%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
particle 名詞	/ˈpɑɹtək(ə)l/	粒子
expand 動詞	/ɪkˈspænd/	広げる, 拡大する
hydrogen 名詞	/ˈhaɪdɹəd͡ʒ(ə)n/	水素
stable 名詞	/ˈsteɪ.bəl/	馬小屋, 厩舎
visible 形容詞	/ˈvɪzɪb(ə)l/	見える, 目に見える
galaxy 名詞	/ˈɡæl.ək.si/	銀河, 銀河系
discover 動詞	/dɪˈskʌvə/	発見する, 見つける
stretch 動詞	/stɹɛt͡ʃ/	伸ばす
radiation 名詞	/ˌɹeɪ.diˈeɪ.ʃən/	放射, 輻射
scientist 名詞	/ˈsaɪəntəst/	科学者
infinite 形容詞	/ˈɪnfɪnɪt/	途方もない, 巨大な
countless 形容詞	/ˈkaʊntləs/	無数な, 無数の
atom 名詞	/ˈætəm/	原子, アトム
ignore 動詞	/ɪɡˈnɔː/	無視する, 忽略する
naturally 副詞	/ˈnæt͡ʃ.(ə.)ɹə.li/	勿論

動画に出てくる句動詞

単語	意味
settle down 動詞	落ち着く

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。

Let’s explore what we know.
We don’t know at all what happened here.
Were there universes before our own?
We don’t know, and maybe we never will.

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	was discovered · were created · were formed
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 given · has stretched · has passed

注意したい発音

話し手はdidn't, don't, we'reなど、短縮形や弱形を7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。

「sh」と「zh」の音: radiation /ˌɹeɪ.diˈeɪ.ʃən/, explosion /ɛkˈsploʊ.ʒən/, observation /ˌɑbzɚˈveɪʃn̩/, prediction /pɹɪˈdɪkʃən/, combinations /kɑmbɪˈneɪʃənz/
長い単語（アクセントの位置に注意）: radiation /ˌɹeɪ.diˈeɪ.ʃən/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, practically /ˈpɹæk.tɪ.k(ə.)li/, diameter /daɪˈæmɪdɚ/, reasonably /ˈɹiː.zən.ə.bli/

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: particle /ˈpɑɹtək(ə)l/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, explore /ɪkˈsploɹ/, neutral /ˈnuː.tɹəl/, practically /ˈpɹæk.tɪ.k(ə.)li/
/v/ — /b/ にならないように、上の歯を下唇に当てる: visible /ˈvɪzɪb(ə)l/, discover /dɪˈskʌvə/, gravity /ˈɡɹævɪti/, observation /ˌɑbzɚˈveɪʃn̩/, convert /kənˈvɝt/
/f/ — 「フ」ではなく、上の歯と下唇で出す: infinite /ˈɪnfɪnɪt/, define /dɪˈfaɪn/, leaf /lif/, manifest /ˈmæn.ɪ.fɛst/, refine /ɹɪˈfaɪn/

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。
通常の速度で一文ずつシャドーイングし、話し手のリズムに合うまで繰り返します。
自分の声を録音して元の音声と比べます。particle, expand, hydrogen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: The Beginning of Everything -- The Big Bang - 動画で英語スピーキングを学ぶ

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