シャドーイング練習: What if quantum physics could eradicate illness? | Jim Al-Khalili for Big Think - 動画で英語スピーキングを学ぶ

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32 文
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Quantum biology is looking for and studying quantum phenomena, quantum effects inside living cells.
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On the one hand, physicists don't like applying their laws of physics and quantum mechanics inside living systems because biology is hard,
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it's complicated, it's messy.
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It's hard enough trying to find quantum effects in a sterile physics lab.
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How does that sort of quantum behaviour survive inside the noisy, messy, complex environment of a living system?
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So physicists think, no, that's too complicated for us.
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Biologists don't want to think about quantum mechanics because by and large they don't understand the mathematics of quantum mechanics.
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And to be fair, molecular biology and genetics have progressed very well, thank you very much, without any help from quantum mechanics.
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In the middle, between the physicists and the biologists, are the chemists who say, well, of course, once you get down to the level of molecules, you're going to hit the quantum realm at some point.
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So you shouldn't be surprised that there must be some quantum effects.
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Don't go inventing new fields of science just to make it sound sexy somehow.
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There may be quantum effects going on, but that doesn't play a functional role.
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You don't need that to explain how an enzyme catalyzes a particular chemical reaction
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or how bacteria photosynthesizes light and turns it into chemical energy.
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That's all biochemistry and it's all understood.
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My counter argument to that is that it may well be that there are quantum effects.
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For example, quantum tunneling when a particle can jump from A to B in a way that's forbidden in our everyday world, but which is very familiar to us in physics and chemistry,
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that may well play a very fundamental role in certain biochemical processes.
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For example, whether mutations can take place in DNA because a single proton,
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a hydrogen atom, has jumped from one strand of DNA to the other in a way
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that it wouldn't do if we didn't use the rules of quantum mechanics.
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Now this could happen if it's given enough energy by say the surrounding water molecules
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that can nudge it over but it can also quantum tunnel across
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which means it can jump even though it doesn't have enough
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energy to get over the energy barrier they can quantum tunnel
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through the hill like a phantom walking through a brick wall
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now mutations are necessary for life otherwise there will be no change given the current progress we're making in genetics,
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gene editing, in being able to manipulate the building blocks of life down at the molecular scale.
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If quantum tunneling plays an important part,
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might it be possible to inhibit certain mutations by inhibiting the ability of particles to quantum tunnel?
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That would suggest that quantum mechanics plays a role in the entire evolution of life on this planet.
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And that might have huge implications for our health.

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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

この動画には、シャドーイング用の文が32文、単語が481語あります。 音声の長さは3:00です。 話す速さは1分あたり約160語で、日常会話に近い自然なペースです。 英語の頻出3,000語に含まれる単語は75%だけなので、語彙は難しめです。

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
quantum 名詞/ˈkwɑntəm/量
mechanic 名詞/mɪˈkænɪk/修理工, 自動車整備士
tunnel 名詞/ˈtʌn(ə)l/トンネル, 地下道
physics 名詞/ˈfɪz.ɪks/物理学
biology 名詞/baɪˈɑ.lə.d͡ʒi/生物学
mutation 名詞/mjuˈteɪʃən/変異, 突然変異
complicated 形容詞/ˈkɑm.plɪˌkeɪ.tɪd/複雑な
particle 名詞/ˈpɑɹtək(ə)l/粒子
messy 形容詞/ˈmɛsi/乱雑な, きたない
genetics 名詞/dʒəˈnɛt.ɪks/遺伝学
molecule 名詞/ˈmɑ.lɪ.kjul/分子
sexy 形容詞/ˈsɛksi/セクシー, 色っぽい
gene 名詞/d͡ʒiːn/遺伝子
chemistry 名詞/ˈkɛm.ɪ.stɹi/化学
fundamental 形容詞/ˌfʌn.dəˈmɛn.təl/基本的な

注意したい発音

話し手はdon't, doesn't, didn'tなど、短縮形や弱形を12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: mutation /mjuˈteɪʃən/, evolution /ˌiːvəˈluːʃ(ə)n/, implication /ˌɪmpləˈkeɪʃən/
  • 長い単語（アクセントの位置に注意）: biology /baɪˈɑ.lə.d͡ʒi/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/, molecular /məˈlɛk.jə.ləɹ/, evolution /ˌiːvəˈluːʃ(ə)n/, fundamental /ˌfʌn.dəˈmɛn.təl/

この動画での練習方法

  1. 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。
  2. 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。
  3. 自分の声を録音して元の音声と比べます。quantum, mechanic, tunnel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 →