シャドーイング練習: Something Travels Faster than Light - 動画で英語スピーキングを学ぶ

レッスンを作成中...
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Shadows can be faster than light.
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But nothing can travel faster than the speed of light.
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Isn't that what Einstein's theory of relativity came down to?
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Was he wrong?
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Let's do a thought experiment.
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Point a flashlight at the moon.
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Hold your finger into the beam to cast a shadow.
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Move your finger from left to right.
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If your flashlight was really powerful, you would see your finger's shadow moving over the moon as fast as it moves across the lens.
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That shadow is moving faster than the speed of light.
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How can that be?
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Well, the trick is that our shadow is not a moving object.
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That movement is an illusion.
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The result of following different shadows created by different photons along a certain path.
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Those photons are physical objects that are indeed traveling to the speed of light.
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But Einstein's speed limit does not apply to the illusions of movement they can create.
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Nothing is faster than light is therefore correct.
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We just have to make sure what we're talking about.
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But if you ask a ninja, he might still insist that.
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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C1レベルのスピーキングレッスンは、動画「Something Travels Faster than Light」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：shadow, faster, speed, moving。 この動画には、シャドーイング用の文が19文、単語が184語あります。 音声の長さは0:51です。 話す速さは速く、1分あたり約217語です。音のつながりや弱く発音される音が多くなります。 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。 全19文のうち3文が疑問文なので、疑問文のイントネーションや短い受け答えの練習に向いています。

この動画の重要語彙

動画の中で特に難しい単語12語を、発音と意味つきで紹介します。

単語発音意味
shadow 名詞/ˈʃædəʊ̯/影, 陰影
finger 名詞/ˈfɪŋɡɚ/指
illusion 名詞/ɪˈl(j)uːʒ(ə)n/幻想
trick 名詞/ˈtɹɪk/欺き, 企み
experiment 名詞/ɪkˈspɛɹ.ə.mənt/実験
lens 名詞/lɛnz/レンズ
beam 名詞/ˈbiːm/梁, 桁
insist 動詞/ɪnˈsɪst/主張する
ninja 名詞/ˈnɪnd͡ʒə/忍者, 忍び
flashlight 名詞/ˈflæʃˌlaɪt/懐中電燈
photon 名詞/ˈfəʊtɒn/光子
relativity 名詞/ɹɛl.əˈtɪv.ɪ.ti/相対性, 相対

注意したい発音

  • 「sh」と「zh」の音: shadow /ˈʃædəʊ̯/, illusion /ɪˈl(j)uːʒ(ə)n/, flashlight /ˈflæʃˌlaɪt/
  • 長い単語（アクセントの位置に注意）: experiment /ɪkˈspɛɹ.ə.mənt/, relativity /ɹɛl.əˈtɪv.ɪ.ti/

日本語話者が苦手な音：

  • /f/ — 「フ」ではなく、上の歯と下唇で出す: finger /ˈfɪŋɡɚ/, flashlight /ˈflæʃˌlaɪt/, photon /ˈfəʊtɒn/
  • 子音の連続 — 間に母音を入れない: trick /ˈtɹɪk/, experiment /ɪkˈspɛɹ.ə.mənt/, lens /lɛnz/, insist /ɪnˈsɪst/, flashlight /ˈflæʃˌlaɪt/

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。shadow, finger, illusion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 →