シャドーイング練習: What If Megalodon Met the Biggest Snake Ever - 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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This is going to be a very unusual match, but I bet it'll also be spectacular and intense.
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In the left corner, we have Megalodon.
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This species went extinct about 3 million years ago, but there are good reasons why it's now a legendary animal.
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It's the biggest shark that ever existed, and it was a super powerful predator in its time.
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And a round of applause for our contender in the right corner, Titanoboa.
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This one's way bigger than any other snake.
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It lives in the swamps of Colombia, and it's the real boss of the area.
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Titanoboa can eat absolutely any animal it decides to hunt, and it faces no competition.
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It can swallow a giant turtle or even a crocodile.
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It looks like a modern boa but behaves like an anaconda, and that's a very scary mix!
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But can it stop a giant shark?
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Let's start by looking at their sizes.
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We still don't know about Megalodon's exact size, because the only remains of them that have survived are just fossilized backbones and teeth.
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But scientists generally think this monster was about 50 feet long.
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So it wasn't just the biggest shark that ever existed, but also one of the biggest fish of its time.
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Its closest rival is the modern whale shark, but they're only about 40 feet.
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The giant Titanoboa got so big thanks to a lucky coincidence since.
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Snakes are cold-blooded animals, so they need a warm climate to live and grow in.
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Northeastern Colombia is perfect.
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It was about 90 degrees when Titanoboa was alive.
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This helped it grow to an incredible 42 feet in length.
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Titanoboa could easily swallow the longest snake registered in the Guinness Book of Records, which is only about 25 feet long.
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And that's a big gulp!
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So we have 50 feet versus 42.
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The first point goes to Megalodon.
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What about weight?
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Titanoboa is about 2,500 pounds.
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That's heavier than a small car, including the passengers.
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But it might be even heavier if you run into Titanoboa after it's had lunch.
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In that case, you can add a few hundred pounds more from the turtle or the alligator that it just swallowed.
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If you put Titanoboa on some very large scales, you'd need 5 giant anacondas on the other side to balance them out.
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But Megalodon is an incredible 50 times heavier than Titanoboa.
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The average adult female weighs between 27 and 59 tons.
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That's as much as an empty Boeing 737 airplane.
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And that's without carry-on luggage, either.
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Luckily enough, Megalodon can't fly.
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So obviously, Megalodon wins in the weight category.
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That's one more point to the ancient shark.
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Although having such a large weight makes it difficult for the shark to move and also means it's a little clumsy.
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Which leads us to our next category, speed and agility.
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Megalodon can swim at about 16 feet per second.
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That's enough to make it the ultimate predator.
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But it's still slower than plenty of other species.
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If Megalodon was swimming in a pool and Usain Bolt was running along next to it, he would be twice as fast.
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His top speed is almost 40 feet per second.
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Now a sailfish, which is the fastest sea creature, can reach about 100 feet per second.
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Giant size and weight make it turn really slowly, just the same as a large truck.
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So when it attacks, the shark has only one chance to strike.
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If it misses, it has to go around for a second attempt.
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This gives its prey more than enough time to run away.
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Titanoboa isn't that fast either, especially on land.
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But when the giant snake is in the water, it can swim at a speed of up to 12 miles per hour.
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Not much, but enough for it to escape from Megalodon if it needs to.
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It's learned to swim so well because water is its main hunting ground.
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And because Titanoboa is a snake, duh, it also has incredible mobility.
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It can wriggle around and change direction very quickly.
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So it can easily dodge Megalodon's bite.
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So here's the first point for Titanoboa.
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The score is 2-1 in favor of megalodon.
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Next section, fighting skills.
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Megalodon is incredibly smart.
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It can change tactics depending on what kind of prey it's hunting.
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Scientists have found teeth markings from megalodon on some whale fossils.
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These show that the giant sharks aim their bites at their prey's vital body parts to take them out quickly.
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Other remains of Megalodon's victims have multiple fractures.
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This is because Megalodon performs a super-powerful ram attack that can knock almost anything out.
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In fact, this 50-ton beast can easily smash through concrete walls.
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So, Megalodon's opponents don't really stand a chance.
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Some of them prefer to first damage the tails and fins of the whale they're hunting.
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This stops it from escaping, letting the huge predator finish off its defenseless victim.
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Now, what can Titanoboa do in response?
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The giant snake isn't poisonous, but this doesn't stop it from hunting prey up to 4 meters long.
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Its bite has a very special design.
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The structure of its teeth and jaws lets Titanoboa really clamp down on the body of its prey, so there's no escape.
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When hunting, Titanoboa uses similar tactics to an anaconda or a boa.
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By that, I mean it uses its powerful muscles and weight to stop its prey from moving.
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It deploys all of its strength to take away the animal's energy, making it helpless.
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So Titanoboa is not only really speedy and agile, it can also fight its corner pretty well.
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It's definitely earned a point in the fighting skills section.
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The score is now 2-2!
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That's a tie going into the final round!
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We've got one more section before we find out which of these ancient monsters will win!
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Up now is Fighting Tools!
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Apart from its ramming power, Megalodon has something else up its sleeve, even though it really doesn't have arms or wears a coat.
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Let's take a look at its jaw.
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Its teeth are about 7 inches long.
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an absolute record for all known shark species in the world.
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Megalodon has about 250 of these deadly pointy things arranged in 5 rows.
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They're also really sharp, which helps it penetrate the thick skin of big animals like whales.
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Megalodon's jaws are 6.5 feet wide, and it has one of the strongest bites of any animal on the planet.
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Not only are Are they super dangerous?
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Megalodon's teeth are also really valuable.
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One of these ancient incisors was once found in Western Australia.
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The location where it was dug up was kept secret, but this didn't stop intruders from stealing it.
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It's probably in someone's private collection by now, and sadly, scientists missed the chance to learn something new about Megalodon.
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Titanoboa also has a mean set of teeth.
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They're thin and pointed like needles.
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They bend inwards in the snake's jaw like fishing hooks.
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This little feature helps Titanoboa get a grip on its prey and prevent the slightest chance of it running or swimming away.
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If the animal tries to pull itself free, it will only hurt itself even more.
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And remember that Titanoboa is incredibly agile, so it can strike with that bite at an incredible speed.
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Now it's time for the fight itself!
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but never swims in the open sea.
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But here Megalodon has gotten lost and ended up in a shallow swampy area off the coast of Colombia.
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In water like this, Megalodon finds it even harder to move around.
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It could bite Titanoboa just once and the fight would be over.
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But because the shark moves so much slower than the snake, for now, he doesn't get the chance to snap those enormous jaws.
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Titanoboa starts attacking Megalodon, but it can't do much damage to that thick skin with its sharp but very short teeth.
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Eventually, Megalodon gets its chance and ends the fight with a single bite.
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It turns out that those huge teeth were what really mattered in this competition.
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Chew on that for a while.
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That's 3 to 2 and a victory to the giant shark!
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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112文、単語が1339語あります。 音声の長さは8:42です。 話す速さは1分あたり約154語で、日常会話に近い自然なペースです。 英語の頻出3,000語に含まれる単語は79%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
bite 動詞/baɪt/噛む
snake 名詞/sneɪk/蛇, ヘビ
swim 動詞/swɪm/泳ぐ
prey 名詞/pɹeɪ/獲物
whale 名詞/ˈweɪl/鯨, クジラ
scientist 名詞/ˈsaɪəntəst/科学者
jaw 名詞/d͡ʒɔː/顎
swallow 動詞/ˈswɑ.loʊ/嚥下する, 飲み込む
predator 名詞/ˈpɹɛd.ə.tɚ/天敵
sharp 形容詞/ʃɑɹp/鋭い, 鋭利な
thick 形容詞/θɪk/太い, 厚い
skill 名詞/skɪl/腕, 技
tactics 名詞/ˈtæktɪks/戦術
turtle 名詞/ˈtɝtl̩/亀, カメ
earn 動詞/ɝn/稼ぐ, 得る

動画に出てくる句動詞

単語意味
find out 動詞見出す, 調べる
run away 動詞逃げる, 逃走する

注意したい発音

話し手はthey're, doesn't, can'tなど、短縮形や弱形を18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。

  • 「th」の音: thick /θɪk/, thin /ˈθɪn/, northeastern /ˌnorˈθiː.stɚn/
  • 「sh」と「zh」の音: sharp /ʃɑɹp/, unusual /ʌnˈjuːʒ(u)əl/, smash /smæʃ/, shallow /ˈʃæloʊ/, sailfish /ˈseɪlˌfɪʃ/
  • 長い単語（アクセントの位置に注意）: incredibly /ɪŋˈkɹɛdɪbli/, unusual /ʌnˈjuːʒ(u)əl/, legendary /ˈlɛd͡ʒ.ənˌdɛɹ.i/, spectacular /spɛkˈtæk.jə.lɚ/, mobility /mə(ʊ)ˈbɪlɪti/

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。bite, snake, swim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
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have survived · have found · has gotten lost
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are just fossilized · was dug
関係詞節 who / which + 節 — 人や物について情報を加えるRecords, which is · sailfish, which is

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 →