シャドーイング練習: Introduction to Chemistry - 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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Hey guys, I'm Professor Dave, and I want to tell you about chemistry.
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What is chemistry?
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Why should we know about it?
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Chemistry is the study of what matter is made of and how it changes.
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It's important to know because it describes everything around us, every material, almost every process.
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If we truly want to understand how our bodies work, how diseases operate and how to cure them, which foods are nutritious and which are not, we must learn chemistry.
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Unless you fundamentally understand molecules, all you can do is repeat things you've heard.
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But how do you know if what you've heard is right?
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If you know chemistry, you can compare what someone says to how you know that molecules behave.
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If there is a glaring contradiction, you can easily reject false information, and you won't be taken advantage of for someone else's personal gain.
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We should be able to think critically like this in every avenue of life, be it health, politics, or otherwise.
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With this general chemistry series, I have two goals.
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One is to help high school and undergraduate students taking their first chemistry course.
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Please use these tutorials to supplement your lectures in any way that is helpful to you.
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But because this is introductory material, and given that chemistry is the central science,
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this general chemistry series is also meant for anyone who wants to learn science with no prior knowledge and for any reason.
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I will break down concepts as simply as possible so that anyone can learn them.
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There will be moments where we go over practice problems that are more geared towards students in a class.
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But feel free to learn these too, because the predictive power of mathematics is what proves the legitimacy of our science.
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If you are watching this clip and intend to view the entire series, please click on the general chemistry playlist on the Professor Dave homepage to view in the suggested order.
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When we check our comprehension after a lesson, feel free to pause the clip so you have plenty of time to think before I tell you the answer.
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If you need to watch a clip more than once to fully understand it, that's okay.
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And if you have any questions about what you've learned, feel free to email me at ProfessorDaveExplains at gmail .com.
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Enjoy your newfound knowledge.
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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「Introduction to Chemistry」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：chemistry, learn, clip, science。 この動画には、シャドーイング用の文が24文、単語が396語あります。 音声の長さは2:01です。 話す速さは速く、1分あたり約196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85%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

動画の中で特に難しい単語9語を、発音と意味つきで紹介します。

単語発音意味
molecule 名詞/ˈmɑ.lɪ.kjul/分子
contradiction 名詞/ˌkɑːntɹəˈdɪkʃən/反論, 反駁
comprehension 名詞/ˌkɑmpɹɪˈhɛnʃn̩/理解, 了解
playlist 名詞/ˈpleɪˌlɪst/プレイリスト, 再生リスト
legitimacy 名詞/ləˈd͡ʒɪtɪməsi/正統
tutorial 名詞/ˌtjuːˈtɔːɹɪəl/学習用, チュートリアル
pause 名詞/pɔːz/休止, 中断
behave 動詞/bɪˈheɪv/振る舞う, 行動する
intend 動詞/ɪnˈtɛnd/つもりである, 意図する

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you've heard · you've learned
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 made · won't be taken · is also meant
関係詞節 who / which + 節 — 人や物について情報を加えるand which are · anyone who wants

注意したい発音

話し手はyou've, I'm, won'tなど、短縮形や弱形を5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: contradiction /ˌkɑːntɹəˈdɪkʃən/, nutritious /nuːˈtɹɪʃəs/, comprehension /ˌkɑmpɹɪˈhɛnʃn̩/
  • 長い単語（アクセントの位置に注意）: contradiction /ˌkɑːntɹəˈdɪkʃən/, introductory /ˌɪntɹəˈdʌktəɹi/, legitimacy /ləˈd͡ʒɪtɪməsi/, critically /ˈkɹɪt.ɪ.kə.li/

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: tutorial /ˌtjuːˈtɔːɹɪəl/, critically /ˈkɹɪt.ɪ.kə.li/
  • /v/ — /b/ にならないように、上の歯を下唇に当てる: predictive /pɹɪˈdɪk.tɪv/, behave /bɪˈheɪv/
  • 子音の連続 — 間に母音を入れない: contradiction /ˌkɑːntɹəˈdɪkʃən/, newfound /ˈnjuː.faʊnd/, predictive /pɹɪˈdɪk.tɪv/, introductory /ˌɪntɹəˈdʌktəɹi/, comprehension /ˌkɑmpɹɪˈhɛnʃn̩/

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。molecule, contradiction, comprehension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 →