シャドーイング練習: The best thing to do for your brain | David Eagleman on The TED Interview - 動画で英語スピーキングを学ぶ
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35 文
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What advice would you give to someone who's, I don't know, in their 40s, 50s, 60s, 70s, 80s?
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Like how, what should we do to be the best stewards of our brains?
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I'll tell you, it's so easy.
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It's to seek novelty, it's to seek challenge.
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So the key is for most people as they get older, they, you know, whatever, their lives shrink,
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they watch Jerry Springer, they do whatever they do.
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But the key is challenging stuff.
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So there's this study that's been going on for decades.
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You may know about this called the Religious Orders Study, where a whole bunch of nuns in convents volunteered to give their brains upon their death.
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So what happened is the researchers started examining these histological samples
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and realized that some fraction of these nuns had Alzheimer's disease
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and their brains were physically getting chewed up with the Alzheimer's and yet nobody knew it when they were alive.
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They just weren't showing the cognitive deficits.
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Okay, so they do a big understanding that, What was going on was they lived in the convents till the day they died.
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They had social interaction.
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They had chores and responsibilities.
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They played games, they had conversations, they were doing all kinds of stuff.
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And as a result, even though their brain was physically degenerating with the ravages of the disease, they were building new bridges,
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new roadways all the time.
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And as a result, they were able to essentially fight back against the degeneration of the tissue.
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This is the important thing is to always seek challenges.
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Go ahead.
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I was going to say, is it challenges that themselves vary?
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So if someone finds doing a crossword challenging, but they do it every day and keep doing it, is that good or is that actually,
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or playing bridge every week or something like that, or is it actually much better to mix that up
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and actually know I'm going to travel to a new place and whatever.
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As soon as you get good at the crossword puzzles, you got to drop that and do something that's hard.
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The key is to be between the levels of frustrating but achievable.
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And that's where you always want to keep yourself in life.
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And as long as you're there, as long as you're there, you're doing the best thing you can do for your way.
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I mean, this is, I'm not- You're between frustrating and achievable.
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You're always frustrated and never achieving.
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That's to say.
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Yeah, it's funny because there's so much that we know, you know, so much stuff pouring out in neuroscience labs, but this is still the key,
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the single piece of advice really that we have for putting off dementia.
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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「The best thing to do for your brain」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：brain, key, seek, challenge, whatever。 この動画には、シャドーイング用の文が35文、単語が457語あります。 音声の長さは2:27です。 話す速さは速く、1分あたり約186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 |
|---|---|---|
| nun 名詞 | /nʌn/ | 修道女, 尼僧 |
| tissue 名詞 | /ˈtɪʃ.(j)u/ | 織物 |
| interaction 名詞 | /ˌɪn.təˈɹæk.ʃən/ | 相互作用 |
| volunteer 名詞 | /ˌvɑlənˈtɪɹ/ | 有志, ボランティア |
| examine 動詞 | /ɪɡˈzæmɪn/ | 調べる |
| pour 動詞 | /poɹ/ | 注ぐ |
| deficit 名詞 | /ˈdɛfəsɪt/ | 赤字, 欠損 |
| fraction 名詞 | /ˈfɹæk.ʃən/ | 断片 |
| puzzle 名詞 | /ˈpʌzəl/ | 難題, 難問 |
| researcher 名詞 | /ˈɹiˌsɝ.t͡ʃɚ/ | 研究員, 研究者 |
| dementia 名詞 | /dɪˈmɛnʃə/ | 認知症 |
| chew 動詞 | /tʃuː/ | 咀嚼する, 噛む |
| novelty 名詞 | /ˈnɑvəlti/ | 珍しさ, 斬新さ |
| crossword 名詞 | /ˈkɹɒswɜː(ɹ)d/ | クロスワード |
| chore 名詞 | /t͡ʃoɹ/ | 雑用, 家事 |
動画に出てくる句動詞
| 単語 | 発音 | 意味 |
|---|---|---|
| go ahead 動詞 | /ˌɡoʊ əˈhɛd/ | どうぞお先に |
| put off 動詞 | 延期する |
繰り返し練習したい文
動画に出てくる短く完結した文です。日常会話でそのまま使えます。
- I'll tell you, it's so easy.
- I was going to say, is it challenges that themselves vary?
- You're always frustrated and never achieving.
注意したい発音
話し手はyou're, I'm, don'tなど、短縮形や弱形を10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: essentially /ɪˈsɛnʃəli/, tissue /ˈtɪʃ.(j)u/, interaction /ˌɪn.təˈɹæk.ʃən/, fraction /ˈfɹæk.ʃən/, dementia /dɪˈmɛnʃə/
- 長い単語（アクセントの位置に注意）: essentially /ɪˈsɛnʃəli/, interaction /ˌɪn.təˈɹæk.ʃən/, achievable /əˈt͡ʃivəbəl/, degenerate /dɪˈd͡ʒɛnəɹɪt/, degeneration /dɪˌdʒɛnəˈɹeɪʃən/
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: volunteer /ˌvɑlənˈtɪɹ/, vary /ˈvɛəɹi/, cognitive /ˈkɑɡ.nɪ.tɪv/, novelty /ˈnɑvəlti/, achievable /əˈt͡ʃivəbəl/
- /f/ — 「フ」ではなく、上の歯と下唇で出す: physically /ˈfɪz.ɪ.kli/, deficit /ˈdɛfəsɪt/, fraction /ˈfɹæk.ʃən/, frustrate /ˈfɹʌsˌtɹeɪt/
- 子音の連続 — 間に母音を入れない: fraction /ˈfɹæk.ʃən/, frustrate /ˈfɹʌsˌtɹeɪt/, convent /ˈkɑn.vɛnt/, crossword /ˈkɹɒswɜː(ɹ)d/, steward /ˈstu.ɚd/
この動画での練習方法
- 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。
- 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。
- 自分の声を録音して元の音声と比べます。nun, tissue, interaction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。