シャドーイング練習: All About Dolphins! - 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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A worksheet relating to this video can be found in the link below.
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Our ocean is filled with a great diversity of marine life.
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From microscopic plankton, cute clownfish,
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chilled out sea turtles, to marine giants like sharks and whales.
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But perhaps the cutest and one of the smartest marine animals of all are dolphins.
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There are 38 species of dolphins, most of which live in the ocean, but a few species, like the Amazon River dolphin, live in freshwater.
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Dolphins are mammals.
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Like all mammals, they are warm blooded and females nurture young with milk.
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You may recall that another characteristic of mammals is a body covered in fur or hair.
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Although adult dolphins are hairless,
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many newborn dolphins have a few whiskers around their snout when they are first born and lose them as they mature.
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As mammals, dolphins also get the oxygen they need using lungs and must come to the surface regularly to take in air.
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This is done through an opening on the top of their head, called a blowhole.
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As vertebrates, dolphins have an internal skeleton of bone.
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They have a well developed circulatory, respiratory and digestive system too.
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Dolphins are well adapted to life in water.
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They have sleek, streamlined bodies, which combined with fins and a powerful tail allow them to dart around effortlessly and with great speed.
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All dolphins are active predators, feeding on a variety of fish, squid and crustaceans such as shrimps.
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Many dolphins locate their prey using a special technique called echolocation.
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They produce short pulses of sound that are reflected off prey and back to the dolphin.
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Dolphins interpret reflected sound to determine the shape,
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size, speed, distance and direction of travel of its unsuspecting prey, even at night or in murky water.
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Another adaptation of many dolphins is a type of camouflage called countershading, whereby they are darker on the top and light on their underside.
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This makes them difficult to spot from above and below.
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Dolphins in groups are called pods.
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A pod can consist of as few as five to ten dolphins or as many as a thousand.
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Dolphins are capable of complex problem-solving and social interaction and communicate
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and work together in diverse ways to group up and catch prey.
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Living in pods helps to protect young as they mature.
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So there you have it, all you need to know about the ocean's smartest and cutest animals.
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If you have any questions, leave them in the comments below.
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Thanks for learning!
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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B1レベルのスピーキングレッスンは、動画「All About Dolphins!」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：dolphin, mammals, prey, pod, marine。 この動画には、シャドーイング用の文が33文、単語が420語あります。 音声の長さは3:57です。 話す速さはゆっくりで、1分あたり約106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74%だけなので、語彙は難しめです。
この動画の重要語彙
動画の中で特に難しい単語15語を、発音と意味つきで紹介します。
| 単語 | 発音 | 意味 |
|---|---|---|
| dolphin 名詞 | /ˈdɑlf.ɪn/ | 海豚, イルカ |
| mammal 名詞 | /ˈmæməl/ | 哺乳類 |
| prey 名詞 | /pɹeɪ/ | 獲物 |
| pod 名詞 | /ˈpɑd/ | さや |
| mature 形容詞 | /məˈt͡ʃʊ(ə)ɹ/ | 成熟, 成熟した |
| camouflage 名詞 | /ˈkæ.məˌflɑːʒ/ | 迷彩 |
| clownfish 名詞 | /ˈklaʊnˌfɪʃ/ | クマノミ |
| crustacean 名詞 | /kɹʌsˈteɪʃən/ | 甲殻類 |
| echolocation 名詞 | /ˌɛkoʊloʊˈkeɪʃən/ | 反響定位, 音波探知 |
| hairless 形容詞 | /ˈhɛɹləs/ | 無毛 |
| nurture 名詞 | /ˈnɜːɹ.t͡ʃəɹ/ | 育成 |
| plankton 名詞 | /ˈplæŋ(k).tən/ | 浮遊生物, プランクトン |
| vertebrate 名詞 | /ˈvɛɹ.tɪ.bɹeɪt/ | 脊椎動物 |
| whisker 名詞 | /ʍɪskə(ɹ)/ | 洞毛, ひげ |
| fin 名詞 | /fɪn/ | 鰭 |
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 | can be found · is filled · is done |
| 義務：must / have to / need to 何かが必要であることを伝える | must come · need to know |
注意したい発音
- 「sh」と「zh」の音: camouflage /ˈkæ.məˌflɑːʒ/, clownfish /ˈklaʊnˌfɪʃ/, crustacean /kɹʌsˈteɪʃən/, echolocation /ˌɛkoʊloʊˈkeɪʃən/, freshwater /ˈfɹɛʃˌwɔːtə(ɹ)/
- 長い単語（アクセントの位置に注意）: circulatory /ˈsɝkjələˌtɔɹi/, echolocation /ˌɛkoʊloʊˈkeɪʃən/, effortlessly /ˈɛf.ɚt.ləs.li/, microscopic /ˌmaɪ.kɹəˈskɑ.pɪk/, respiratory /ɹɪˈspɪ.ɹət.ə.ɹi/
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: circulatory /ˈsɝkjələˌtɔɹi/, hairless /ˈhɛɹləs/, streamline /ˈstriːmlaɪn/, relate /ɹɪˈleɪt/
- /v/ — /b/ にならないように、上の歯を下唇に当てる: digestive /daɪˈdʒɛstɪv/, vertebrate /ˈvɛɹ.tɪ.bɹeɪt/, diverse /daɪˈvɜːs/, diversity /daɪˈvɜː(ɹ)sɪti/
- /f/ — 「フ」ではなく、上の歯と下唇で出す: dolphin /ˈdɑlf.ɪn/, camouflage /ˈkæ.məˌflɑːʒ/, clownfish /ˈklaʊnˌfɪʃ/, effortlessly /ˈɛf.ɚt.ləs.li/, freshwater /ˈfɹɛʃˌwɔːtə(ɹ)/
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。
- 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。
- 自分の声を録音して元の音声と比べます。dolphin, mammal, prey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。