シャドーイング練習: RE2 Unit 10A - 動画で英語スピーキングを学ぶ

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Track 19.
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Reading 10A.
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The Big Thor.
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The Chacaltea ski area sits upon a small mountain glacier in Bolivia.
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Although the area is less than a kilometer long, it once hosted international ski competitions.
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In the past ten years, however, the snow has melted very quickly.
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As the Chacaltea glacier melts, dark rocks are uncovered.
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These rocks absorb more heat.
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causing temperatures to increase so the remaining snow melts faster.
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The cycle seems unstoppable.
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Today the snow is almost gone, and so are Shakalteya's days as a popular ski resort.
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A global problem.
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In recent years, scientists all around the world have come to a terrifying conclusion.
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Global warming is a real problem, and one largely caused by human activity.
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But as experts debate how to solve the problem, ice near the North and South Poles is melting even faster than environmentalists once feared.
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Ten years ago, scientists warned that the Arctic Ocean could lose all its ice in about a hundred years.
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Now, they think it could happen much sooner.
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As climate scientist
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Mark Serres says, reality is exceeding expectations.
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Glacier Run The ice sheet of Greenland is also melting more quickly than scientists predicted.
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One of its largest glaciers, Jakobshavn Ispra, is moving towards the sea faster than expected.
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In fact, the glacier is moving twice as fast as it was in 1995.
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Rising air and sea temperatures are two well -known causes.
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Researchers have also discovered other unexpected processes that cause glaciers to melt faster.
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For instance, water from melting ice runs down cracks in the surface and gets between the ice and rock below.
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This makes it easier for the glacier to slide into the warmer seawater.
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Some researchers believe that the melting of Greenland's ice, if it continues, could add at least a metre to global sea levels by 2100.
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If the ice sheet of Antarctica continues to melt at its current rate,
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the next few centuries could see at least a 2 meter rise in sea levels, forcing tens of millions of people out of their homes.
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Drying out While the melting of glaciers may flood some areas of the Earth, in other places, global warming is making water disappear.
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Many scientists think the glaciers of the Himalayas and the Andes could disappear in this century.
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As a result, millions of people in India,
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Bangladesh, Bolivia, and Peru, who depend on water from mountain glaciers like Shakateya, could find themselves in a critical situation.
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An increasing number of heat waves and droughts worldwide also suggest global warming is having an impact on humans right now now,
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and that it could change the face of the world in the future.
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How can we avoid these terrible consequences?
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We all have a role to play in saving our planet, says Oscar -winning actor Leonardo DiCaprio, a producer of the documentary movie
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Before the Flood, which helped to raise awareness of the problem.
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DiCaprio believes that an immediate shift in people's attitude to climate change is needed.
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We need to vote for leaders who understand the serious issues impacting our climate, he says.
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There is no issue this important because the future of the planet is at stake.

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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「RE2 Unit 10A」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：glacier, ice, melting, scientist, global。 この動画には、シャドーイング用の文が41文、単語が527語あります。 音声の長さは3:54です。 話す速さは1分あたり約135語で安定しており、シャドーイングしやすいペースです。 英語の頻出3,000語に含まれる単語は78%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
melt 動詞/mɛlt/溶ける, 溶かす
glacier 名詞/ˈɡleɪ.ʃɚ/氷河
scientist 名詞/ˈsaɪəntəst/科学者
sheet 名詞/ʃit/枚, シート
flood 名詞/flʌd/洪水, 大水
disappear 動詞/dɪsəˈpɪɹ/消える
researcher 名詞/ˈɹiˌsɝ.t͡ʃɚ/研究員, 研究者
metre 名詞/ˈmiːtəɹ/メートル, ㍍
awareness 名詞/əˈwɛɹ.nəs/意識
producer 名詞/pɹəˈdjuːsə/生産者, 製作者
solve 動詞/sɒlv/解決する
crack 名詞/kɹæk/ひび, 亀裂
conclusion 名詞/kənˈkluːʒən/終わり, 結び
discover 動詞/dɪˈskʌvə/発見する, 見つける
resort 名詞/ɹɪˈzɔɹt/リゾート

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 melted · have come · have also discovered
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are uncovered · is needed

注意したい発音

  • 「sh」と「zh」の音: glacier /ˈɡleɪ.ʃɚ/, sheet /ʃit/, conclusion /kənˈkluːʒən/, expectation /ˌɛk.spɛkˈteɪ.ʃən/
  • 長い単語（アクセントの位置に注意）: documentary /ˌdɒk.jʊˈmɛn.tɹi/, unexpected /ʌnɪkˈspɛktɪd/, expectation /ˌɛk.spɛkˈteɪ.ʃən/, kilometre /kɪˈlɑmɪtəɹ/, unstoppable /ʌnˈstɔ.pə.bəl/

日本語話者が苦手な音：

  • /v/ — /b/ にならないように、上の歯を下唇に当てる: solve /sɒlv/, discover /dɪˈskʌvə/, uncover /ʌnˈkʌvɚ/
  • /f/ — 「フ」ではなく、上の歯と下唇で出す: flood /flʌd/, terrify /ˈtɛɹɪfaɪ/
  • 子音の連続 — 間に母音を入れない: melt /mɛlt/, glacier /ˈɡleɪ.ʃɚ/, scientist /ˈsaɪəntəst/, flood /flʌd/, producer /pɹəˈdjuːsə/

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. 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。
  3. 自分の声を録音して元の音声と比べます。melt, glacier, scientist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 →