シャドーイング練習: Renewable Energy 101 - 動画で英語スピーキングを学ぶ
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Renewable energy.
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Renewable energy is a term used to describe a group of energy technologies derived from sources
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that do not deplete or that can be replenished within a human's lifetime.
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The most common renewable energy sources are solar, which harnesses the sun for energy, wind, which utilizes the motion of wind to create electricity,
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hydropower, which uses moving water to generate power.
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Biomass, which refers to a large group of technologies that use living or recently living organisms and waste to create energy.
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Tidal, tidal uses the rise and fall of the tides to create electricity.
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Geothermal, which uses the internal heat from the earth for energy.
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Nuclear energy is not considered a renewable energy source.
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It is considered an alternative energy source.
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While renewable energy accounts for a minority share of the world's energy supply, it is also the fastest growing energy supply on the planet.
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Renewable energy is sought after because it is a clean source of energy, meaning that it does not directly produce greenhouse gas emissions or air pollutants.
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While renewable energy sources are better for the environment, they also face several challenges, the main ones being low efficiencies, high capital costs, and intermittency.
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That's renewable energy.
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Thank you.
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Vocabulary and speaking notes for this lesson
This B1 speaking lesson is built on the video “Renewable Energy 101”. The speaker keeps coming back to these words: energy, renewable, source, create. This video has 15 sentences and 204 words to shadow. The speech runs for 1:25. The speaker talks at a steady 144 words per minute, a comfortable pace for shadowing. Only 80% of the words are among the 3,000 most common in English, so the vocabulary is demanding.
Key vocabulary in this video
The 15 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| renewable adjective | /ɹɪˈnu.ə.bl̩/ | Able to be renewed; capable of renewal. |
| tidal adjective | /ˈtaɪ.d(ə)l/ | Relating to tides. |
| biomass noun | /ˈbaɪoʊˌmæs/ | The total mass of a living thing or a part thereof (such as a cell). |
| deplete verb | /dɪˈplit/ | To reduce the amount of; to remove (a substance from something) |
| geothermal adjective | Pertaining to heat energy extracted from reservoirs in the earth's interior. | |
| hydropower noun | hydroelectric power | |
| intermittency noun | The state of being intermittent; periodicity. | |
| pollutant noun | /pəˈl(j)uːtənt/ | A foreign substance that makes something dirty, or impure, especially waste from human activities. |
| replenish verb | /ɹɪˈplɛn.ɪʃ/ | To refill; to renew; to supply again or to add a fresh quantity to. |
| derive verb | /dɪˈɹaɪv/ | To obtain or receive (something) from something else. |
| organism noun | /ˈɔɹ.ɡəˌnɪz.əm/ | A discrete and complete living thing, such as animal, plant, fungus or microorganism. |
| harness verb | /ˈhɑɹ.nəs/ | To place a harness on something; to tie up or restrain. |
| emission noun | /ɪˈmɪʃ.ən/ | Something which is emitted or sent out; issue. |
| utilize verb | /ˈjuː.tɪ.laɪz/ | US, Canada, and Oxford British English standard spelling of utilise. |
| greenhouse noun | /ˈɡɹːnˌ(h)aʊs/ | A building used to grow plants, particularly one with large glass windows or plastic sheeting to trap heat from sunlight even in intemperate seasons or… |
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 |
|---|---|
| 「used to」 used to + 動詞 — 今はもう違う過去の習慣や状態 | used to describe |
| 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 replenished · is not considered · is considered |
| 最上級 the -est / the most … — グループの中で一番 | The most common · the fastest |
Pronunciation to watch
- The “sh” and “zh” sounds: replenish /ɹɪˈplɛn.ɪʃ/, emission /ɪˈmɪʃ.ən/
How to practise with this video
- Listen to the whole video once without speaking and note the words you do not know.
- Shadow it sentence by sentence at normal speed, repeating each one until your rhythm matches the speaker.
- Record yourself and compare with the original, paying attention to words like renewable, tidal, biomass.
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。