シャドーイング練習: The Five Forces Analysis explained - 動画で英語スピーキングを学ぶ
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The Five Forces Analysis
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Michael Porter of Harvard Business School developed the Five Forces model as a tool to analyze the competitive environment in industries.
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He argued that some industries are consistently more profitable than others, and that by analyzing the competitive environment,
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you can see which industries are attractive for companies to compete in.
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For example, he found that airlines tend to be unprofitable, whereas soft drink companies are highly profitable.
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And the Five Forces model can be used to explain why this is the case.
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The framework considers five factors that drive competition in an industry.
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Let's discuss each one in turn and illustrate with an analysis of the coffee shop industry in a typical city.
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The first force is the level of rivalry.
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Having lots of strong competitors in an industry who are all fighting for customers will make life difficult.
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Many cities now have lots of coffee shops, making the level of rivalry high.
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This by itself makes the industry not very attractive.
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In the Five Forces model, it is recognized that you are not only competing for profit with your direct rivals,
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but also with customers, suppliers, substitutes, and potential entrants.
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If customers tend to be large and they can easily switch between suppliers, they are in a strong position to negotiate lower prices,
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which will limit industry profitability.
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In the coffee shop industry, customers tend to be individuals who cannot negotiate the price of the product.
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However, the fact that they can easily switch from one supplier to another, as well as their ability to leave reviews on social media, increases their power.
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Similarly, if suppliers are strong and offer unique products that companies in the industry cannot go without, the industry will be less attractive.
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For coffee shops, suppliers of coffee beans, milk and sugar are not powerful since there is a lot of choice and switching from one supplier to another is easy.
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The fourth force in the model is the power of substitutes.
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Coffee shops don't only compete against each other, but also against products in other industries that satisfy a similar need.
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For example, if you do not get your drink from a coffee shop, you might make it at home or get it from a machine.
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If these products are seen as good substitutes for coffee shops, then this limits profitability in the industry.
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In reality, many people see coffee shops as a place to meet friends or take a short break out of the house, and there are not many good alternatives that meet these needs.
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Finally, the threat of new entrants can make an industry less attractive.
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Entry barriers in the coffee shop industry are low and it is quite easy to enter the business.
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This means that a coffee shop owner does not only compete against existing rivals, but also against other potential competitors who may enter the industry at any time.
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Other industries, such as car manufacturing, are more difficult to enter and companies know they will not suddenly face lots of new competitors.
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By considering each of the five forces and then looking at the total picture, it is possible to make conclusions about how attractive an industry is.
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Screeing out a five forces analysis also helps to identify the barriers to profitability in an industry
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and enables companies to design strategies that deal with these barriers.
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For example, if customers find it easy to switch between different coffee shops, then a company can introduce loyalty cards to encourage customers to keep coming back.
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Similarly, if the level of rivalry is strong, companies can try to differentiate in order to provide unique value to customers and make the competition less of a threat.
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If you do a five forces analysis, the best is to take a step-by-step approach as follows.
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1. Define the industry that you are analyzing.
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2. For each force, identify the current situation.
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Who are the most important competitors, customers, and suppliers?
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What are the substitutes and entry barriers?
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3. Analyze the attractiveness of the industry for each of the five forces.
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For each force, are there factors that make the industry easy or difficult for companies?
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Finally, look at the overall picture
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and consider what your analysis as a whole says about the attractiveness of the industry
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and about how to successfully compete in it.
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Remember that even if your analysis shows that an industry looks unattractive, it is still possible to be profitable with an innovative and original strategy.
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There are lots of examples of successful companies in difficult industries.
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That concludes the 5 Forces Analysis.
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Check our other videos for more insights.
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Brought to you by Sim Institute.
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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C1レベルのスピーキングレッスンは、動画「The Five Forces Analysis explained」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：industry, force, coffee, shop, customers。 この動画には、シャドーイング用の文が49文、単語が778語あります。 音声の長さは5:00です。 話す速さは1分あたり約156語で、日常会話に近い自然なペースです。 単語の86%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
動画の中で特に難しい単語12語を、発音と意味つきで紹介します。
| 単語 | 発音 | 意味 |
|---|---|---|
| supplier 名詞 | /səˈplaɪə/ | サプライヤー, 供給者 |
| competitor 名詞 | /kəmˈpɛt.ɪ.tɚ/ | 競争者 |
| analyze 動詞 | /ˈæn.əˌlaɪz/ | 分析する |
| rivalry 名詞 | /ˈɹaɪ.vəl.ɹi/ | ライバル, 競争 |
| profitable 形容詞 | /ˈpɹɑ.fɪ.tə.bl̩/ | 有益な, 利益になる |
| attractiveness 名詞 | 吸引力 | |
| negotiate 動詞 | /nəˈɡəʊ.ʃi.eɪt/ | 交渉する, 折衝する |
| differentiate 動詞 | /dɪf.əˈɹɛn.ʃi.eɪt/ | 分化する |
| conclude 動詞 | /kənˈkluːd/ | 終える, 締め括る |
| satisfy 動詞 | /ˈsætɪsfaɪ/ | 満たす |
| bean 名詞 | /ˈbi(ː)n/ | 豆, 隠元 |
| airline 名詞 | /ˈɛɹˌlaɪn/ | 航空会社, エアライン |
動画に出てくる句動詞
| 単語 | 意味 |
|---|---|
| come back 動詞 | 戻る, 帰る |
注意したい発音
- 「sh」と「zh」の音: negotiate /nəˈɡəʊ.ʃi.eɪt/, differentiate /dɪf.əˈɹɛn.ʃi.eɪt/
- 長い単語（アクセントの位置に注意）: competitor /kəmˈpɛt.ɪ.tɚ/, profitability /ˌpɹɑ.fɪ.təˈbɪl.ɪ.ti/, negotiate /nəˈɡəʊ.ʃi.eɪt/, unprofitable /ʌnˈpɹɑf.ɪ.təbl̩/, differentiate /dɪf.əˈɹɛn.ʃi.eɪt/
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。supplier, competitor, analyze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。