シャドーイング練習: I read Anthropic's 92-page risk factor document, so you don't have to | Explainer - 動画で英語スピーキングを学ぶ

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There are some big questions surrounding the AI boom.
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Is this a bubble?
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How risky are these companies?
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Are they even making money?
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Will AI lead to the end of the world?
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Luckily for us, we just got this.
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It's Anthropics filing to go public on the U .S stock market
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and it gives us a good look under the hood of the company that created Claude.
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Now I've read through every page so you don't have to and here's what I found.
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First, let's look at the money.
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16 .3 billion dollars in revenue is how much Anthropic made in the first half of 2026.
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That's explosive growth compared to the 4 .5 billion dollars they made in all of 2025.
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And Anthropic was just founded five years ago.
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That seems like a lot until you see this number, 80 billion dollars.
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That's how much money they've spent in the first six months of this year.
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So here we learn that one, Anthropic is billions of dollars away from being profitable.
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And two, running an AI company is very, very expensive.
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The report goes on to say that securing computing power makes up a vast majority of Anthropic's costs,
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and that the market for compute is intensely competitive.
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Next, let's look at the 92 -page risk section of the document, where Anthropic acknowledges the threats AI poses to humanity,
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including, in their words, meaningful assistance to malicious actors seeking to develop chemical, biological, or other dangerous weapons,
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and AI being used by authoritarian governments to deepen repression and develop high -tech surveillance states.
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The document even acknowledges AI -enabled catastrophic events, the sort of doomsday scenario Anthropic employees have been warning about.
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Anthropic said that advanced AI models, including its own, might manipulate information, try to influence human decision makers, or resist attempts to shut the system down.
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While the company does employ technical safeguards, it goes on to acknowledge that those safeguards are incomplete,
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and in the future, they may fail to operate as intended.
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Finally, economic risks.
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The company states that a lot of their revenue is driven by only a few customers.
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They note that their top five customers represented approximately a quarter of their revenue.
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So any loss or decrease in spending from just one top customer could have a huge negative impact on the company's finances.
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Anthropic also mentions that its business is extremely vulnerable to U .S regulatory changes, particularly restrictions on data center development or expansion,
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including permitting, zoning, or limits on energy or water usage.
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That means that all of those data center protests
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that have spurned bans or moratoriums across the U .S might have a significant impact on these businesses.
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With all of that in mind, investors still see incredible potential as the company is reportedly expected to hit a valuation of around $1 .5 trillion.
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How Anthropic does
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when it hits the market will test the financial viability of the multi -trillion dollar AI boom that we are living through.

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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「I read Anthropic's 92-page risk factor document, so you don't have to」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：Anthropic, dollar, billion, acknowledge, customer。 この動画には、シャドーイング用の文が37文、単語が492語あります。 音声の長さは2:58です。 話す速さは1分あたり約166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80%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
acknowledge 動詞/əkˈnɑ.lɪd͡ʒ/承認する, 認める
vast 形容詞/væst/広大な, 莫大な
compare 動詞/kəmˈpɛɚ/比べる, 比較する
protest 名詞/ˈpɹoʊ.tɛst/抗議, プロテスト
humanity 名詞/hjuˈmænɪti/人類
biological 形容詞/ˌbaɪ.əˈlɑ.d͡ʒɪ.kəl/生物学の
maker 名詞/ˈmeɪk.ɚ/作者, 作り手
usage 名詞/ˈjuːsɪd͡ʒ/使い方
vulnerable 形容詞/ˈvʌln(ə)ɹəbl̩/傷つきやすい, 脆い
resist 動詞/ɹɪˈzɪst/抗う, 抵抗する
scenario 名詞/sɪˈnɛəɹioʊ/脚本, 台本
decrease 動詞/dɪˈkɹiːs/減少する, 減る
surveillance 名詞/sɚˈveɪ.ləns/監視, サーベイランス
bubble 名詞/ˈbʌbəl/泡
meaningful 形容詞/ˈmiː.nɪŋ.fl̩/有意義な

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was just founded · being used · is driven
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I've read · they've spent · have spurned

注意したい発音

話し手はdon't, I've, they'veなど、短縮形や弱形を3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: restriction /ɹɪˈstɹɪkʃən/, valuation /ˌvæ.ljuːˈeɪ.ʃən/, malicious /məˈlɪʃəs/, repression /ɹəˈpɹɛʃən/
  • 長い単語（アクセントの位置に注意）: humanity /hjuˈmænɪti/, biological /ˌbaɪ.əˈlɑ.d͡ʒɪ.kəl/, regulatory /ˈɹɛɡ.jʊ.lə.t(ɔː.)ɹi/, reportedly /ɹɪˈpɔːtɪdli/, valuation /ˌvæ.ljuːˈeɪ.ʃən/

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: regulatory /ˈɹɛɡ.jʊ.lə.t(ɔː.)ɹi/, vulnerable /ˈvʌln(ə)ɹəbl̩/, reportedly /ɹɪˈpɔːtɪdli/, profitable /ˈpɹɑ.fɪ.tə.bl̩/
  • /v/ — /b/ にならないように、上の歯を下唇に当てる: vast /væst/, vulnerable /ˈvʌln(ə)ɹəbl̩/, surveillance /sɚˈveɪ.ləns/, explosive /ɛkˈspləʊsɪv/, investor /ɪnˈvɛs.tə(ɹ)/
  • /f/ — 「フ」ではなく、上の歯と下唇で出す: safeguard /ˈseɪfɡɑːd/, meaningful /ˈmiː.nɪŋ.fl̩/, profitable /ˈpɹɑ.fɪ.tə.bl̩/, catastrophic /ˌkætəˈstɹɑfɪk/

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。acknowledge, vast, compare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 →