シャドーイング練習: All About Hydroelectricity - 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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In a similar way that a wind turbine uses the kinetic energy in wind to produce electrical energy,
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people can also use the energy in moving water to produce electrical energy.
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Electricity produced using moving water is called hydroelectricity or hydropower.
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Hydroelectricity uses the kinetic energy in flowing rivers and streams.
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The water is often held in large dams which allow people to control the flow of water.
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When the water in a dam is released, it pushes past generators that convert kinetic energy into electricity.
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The electricity travels along power lines to power stations, where it is sent along an electrical grid to our homes and cities.
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A few of the advantages of hydroelectricity are that it is renewable,
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it provides consistent power, and like solar energy and wind turbines, it does not release any pollutants into the air.
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The disadvantages of hydroelectricity are that it requires a lot of water.
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The water is either dammed up or diverted from its natural course.
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This can affect the organisms that rely on water upstream and in surrounding areas.
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Check out our related videos on the advantages and disadvantages of other electricity production methods.
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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

この動画には、シャドーイング用の文が14文、単語が195語あります。 音声の長さは1:49です。 話す速さはゆっくりで、1分あたり約107語です。一つ一つの音をまねる余裕があります。 英語の頻出3,000語に含まれる単語は77%だけなので、語彙は難しめです。

この動画の重要語彙

動画に出てくるやや難しい単語12語を、発音と意味つきで紹介します。

  • dam /ˈdæm/ (名詞) — ダム, 堰堤. A structure placed across a flowing body of water to stop the flow or part of the flow, generally for purposes such as retaining or diverting some of the water…
  • disadvantage /ˌdɪsədˈvæntɪd͡ʒ/ (名詞) — 不利. A weakness or undesirable characteristic; con; drawback.
  • turbine /ˈtɜː.baɪn/ (名詞) — タービン. Any of various rotary machines that use the kinetic energy of a continuous stream of fluid (a liquid or a gas) to turn a shaft.
  • rely /ɹɪˈlaɪ/ (動詞) — 頼る, あてにする. To trust; to have confidence in; to depend.
  • grid /ɡɹɪd/ (名詞) — 格子, グリッド. A rectangular array of squares or rectangles of equal size, such as in a crossword puzzle.
  • generator /ˈdʒɛnəɹeɪtə(ɹ)/ (名詞) — 発電機. An apparatus in which vapour or gas is formed from a liquid or solid by means of heat or chemical process, as a steam boiler, gas retort etc.
  • renewable /ɹɪˈnu.ə.bl̩/ (形容詞) — 再生可能な. Able to be renewed; capable of renewal.
  • surround /səˈɹaʊnd/ (動詞) — 囲む, 取り巻く. To encircle something or simultaneously extend in all directions.
  • organism /ˈɔɹ.ɡəˌnɪz.əm/ (名詞) — 生物, 有機体. A discrete and complete living thing, such as animal, plant, fungus or microorganism.
  • upstream /ʌpˈstɹiːm/ (形容詞) — 川上. In a direction against the flow of a current or stream of fluid (typically water); upriver.
  • kinetic /kɪˈnɛtɪk/ (形容詞) — 動的, 運動の. Relating to motion.
  • pollutant /pəˈl(j)uːtənt/ (名詞) — 汚染物質. A foreign substance that makes something dirty, or impure, especially waste from human activities.

動画に出てくる句動詞

  • check out (動詞) — 試験する, 検査する. To record the departure or withdrawal of someone or something (such as guests, employees, books, etc.).

注意したい発音

  • 長い単語（アクセントの位置に注意）: electricity /ɪˌlɛkˈtɹɪsɪti/, electrical /ɪˈlɛktɹɪkəl/, disadvantage /ˌdɪsədˈvæntɪd͡ʒ/, generator /ˈdʒɛnəɹeɪtə(ɹ)/, organism /ˈɔɹ.ɡəˌnɪz.əm/

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。dam, disadvantage, turbineなどの単語に特に注意しましょう。

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is called · is often held · is released

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 →