シャドーイング練習: How Does Daylight Saving Time Work? ⏰ | Why Do We Change Clocks? | Dr. Binocs Show - 動画で英語スピーキングを学ぶ

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Come on, get started!
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Oh, what happened little kitty?
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My clock has been stuck for an hour!
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Ha ha ha!
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It hasn't stopped.
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It just switched back from daylight saving time.
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What's that?
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Well, to answer that, let me answer a question.
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Why do we have
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Daylight Saving Time?
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Zoom in!
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Before modern electric lighting became widely available, natural daylight was essential to everyday life.
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Yes, its timing did not always match people's schedules.
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In summer, the sun rose early and set late, giving people long hours of daylight.
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But some of that morning light arrived while people were still asleep.
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And by the time they finished work and had time for other activities, darkness was approaching.
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If they wanted to continue working or spend time outside,
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they had to rely on artificial light such as candles or oil lamps, which required fuel and resources.
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This led to a simple question.
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Could people organize their clocks differently so that more daylight fell during the hours when they were awake and active?
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One early idea came from Benjamin Franklin.
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In 1784, while living in Paris,
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Franklin jokingly wrote about getting up earlier to make better use of sunlight and save candles.
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He did not propose changing clocks, but his essay highlighted the potential of making better use of natural daylight.
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More than a century later, a New Zealand insect collector,
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George Hudson, wanted more daylight after work for his hobby.
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In 1895, he proposed shifting clocks during part of the year.
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William Willett later promoted a similar idea in Britain,
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campaigning in 1907 for clocks to be moved forward so that more daylight could fall in the evening.
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The idea became practical during the First World War.
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In 1916, Germany and Austria -Hungary introduced seasonal clock changes,
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partly to conserve fuel by reducing the need for artificial lighting.
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Other countries followed and the United States adopted daylight saving time in 1918 as a wartime measure.
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but what actually happens
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when the clocks change in the united states for example the sun might naturally rise at 5 am
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and set at 7 pm during summer most people are still asleep at 5 am
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while many are awake and active at 7 pm when daylight saving time begins in spring the clock moves forward one hour.
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Sunrise is then shown as 6 a .m.
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and the sunset as 8 p .m.
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The sun has not changed and no daylight has been created.
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Only the clock has changed.
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The idea was that this extra hour of evening daylight could give people more time for outdoor activities,
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shopping, travel, exercise and social life while also reducing the need for artificial lighting.
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But modern research shows that the energy effects are more complicated.
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Lighting is only one part of energy use.
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Heating, cooling, transportation and changes in daily behavior can also affect the overall result.
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And changing the clock comes with its own challenges.
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Moving it forward in spring can reduce sleep and temporarily disrupt the body's internal timing.
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Research has found associations between the spring transition and changes in road safety and workplace injuries.
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When clocks move back to their original time in autumn, people gain an hour of sleep,
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but darkness arrives earlier in the evening.
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So, this process often gets a mixed review.
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Trivia Time!
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Did you know, in the United States,
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DST starts on the second Sunday in March and ends on the first Sunday in November?
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Also, less than 40 % of countries worldwide use TST.
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It's sketching time.
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Today's sketch of the day goes to...
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Moo -Nee.
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Hope you learned something useful today.
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Until next time, it's me, Dr. Binox, zooming out.
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Saving daylight or not, Kitty's going to sleep anyway.
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Never mind.

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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「How Does Daylight Saving Time Work? ⏰」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：daylight, clock, hour, saving, lighting。 この動画には、シャドーイング用の文が63文、単語が610語あります。 音声の長さは5:57です。 話す速さはゆっくりで、1分あたり約102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81%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
clock 名詞/klɑk/走行距離計
artificial 形容詞/ˌɑː.tɪˈfɪʃ.əl/人工の
arrive 動詞/əˈɹaɪv/着く, 到着する
asleep 形容詞/əˈsliːp/寝ている, 眠っている
darkness 名詞/ˈdɑɹk.nɪs/闇, 暗黒
awake 動詞/əˈweɪk/目覚める, 目を覚ます
sketch 名詞/ˈskɛt͡ʃ/スケッチ, 素描
propose 動詞/pɹəˈpəʊz/申し込む
candle 名詞/ˈkæn.dəl/蝋燭
zoom 動詞/zuːm/猛スピードで進む
naturally 副詞/ˈnæt͡ʃ.(ə.)ɹə.li/勿論
practical 形容詞/ˈpɹæk.tɪ.kəl/実践的な
complicated 形容詞/ˈkɑm.plɪˌkeɪ.tɪd/複雑な
transition 名詞/tɹænˈzɪʃ.ən/遷移, 推移
resource 名詞/ɹɪˈzɔːs/資源, 資産

動画に出てくる句動詞

単語発音意味
get up 動詞起きる
zoom out 動詞/ˌzuːm ˈaʊt/ズームアウトする, 縮小する

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has been stuck · hasn't stopped · has not changed
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has been stuck · be moved · is then shown

注意したい発音

  • 「sh」と「zh」の音: artificial /ˌɑː.tɪˈfɪʃ.əl/, transition /tɹænˈzɪʃ.ən/
  • 長い単語（アクセントの位置に注意）: artificial /ˌɑː.tɪˈfɪʃ.əl/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/, differently /ˈdɪf.ə.ɹənt.li/, temporarily /ˌtɛmpəˈɹɛɹəli/

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: naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, practical /ˈpɹæk.tɪ.kəl/, partly /ˈpɑɹtli/, rely /ɹɪˈlaɪ/, differently /ˈdɪf.ə.ɹənt.li/
  • /v/ — /b/ にならないように、上の歯を下唇に当てる: arrive /əˈɹaɪv/, everyday /ˈɛvɹiˌdeɪ/, conserve /kənˈsɜː(ɹ)v/, trivia /ˈtɹɪvi.ə/
  • /f/ — 「フ」ではなく、上の歯と下唇で出す: artificial /ˌɑː.tɪˈfɪʃ.əl/, differently /ˈdɪf.ə.ɹənt.li/

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。clock, artificial, arrive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 →