跟读练习: All About Hydroelectricity - 通过视频学习英语口语

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In a similar way that a wind turbine uses the kinetic energy in wind to produce electrical energy,
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people can also use the energy in moving water to produce electrical energy.
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Electricity produced using moving water is called hydroelectricity or hydropower.
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Hydroelectricity uses the kinetic energy in flowing rivers and streams.
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The water is often held in large dams which allow people to control the flow of water.
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When the water in a dam is released, it pushes past generators that convert kinetic energy into electricity.
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The electricity travels along power lines to power stations, where it is sent along an electrical grid to our homes and cities.
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A few of the advantages of hydroelectricity are that it is renewable,
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it provides consistent power, and like solar energy and wind turbines, it does not release any pollutants into the air.
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The disadvantages of hydroelectricity are that it requires a lot of water.
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The water is either dammed up or diverted from its natural course.
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This can affect the organisms that rely on water upstream and in surrounding areas.
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Check out our related videos on the advantages and disadvantages of other electricity production methods.
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Thank you.
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本课的词汇与口语要点

这段视频共有 14 个句子、195 个单词可供跟读。 讲话部分时长为 1:49。 说话人语速较慢，每分钟约 107 个词，你有足够的时间模仿每一个音。 只有 77% 的单词属于英语最常用的 3,000 词，词汇难度较高。

视频中的重点词汇

视频中 15 个不太常见的单词，附发音和释义：

  • dam /ˈdæm/ (名词) — бэ, фибэ. A structure placed across a flowing body of water to stop the flow or part of the flow, generally for purposes such as retaining or diverting some of the water…
  • disadvantage /ˌdɪsədˈvæntɪd͡ʒ/ (名词) — 不利. A weakness or undesirable characteristic; con; drawback.
  • turbine /ˈtɜː.baɪn/ (名词) — 渦輪機 /涡轮机, 輪機 /轮机. Any of various rotary machines that use the kinetic energy of a continuous stream of fluid (a liquid or a gas) to turn a shaft.
  • consistent /kənˈsɪs.tənt/ (形容词) — 一貫的 /一贯的. Of a regularly occurring, dependable nature.
  • rely /ɹɪˈlaɪ/ (动词) — 依賴 /依赖, 依靠. To trust; to have confidence in; to depend.
  • grid /ɡɹɪd/ (名词) — 網格 /网格, 格子. A rectangular array of squares or rectangles of equal size, such as in a crossword puzzle.
  • generator /ˈdʒɛnəɹeɪtə(ɹ)/ (名词) — 發電機 /发电机. An apparatus in which vapour or gas is formed from a liquid or solid by means of heat or chemical process, as a steam boiler, gas retort etc.
  • renewable /ɹɪˈnu.ə.bl̩/ (形容词) — 可再生. Able to be renewed; capable of renewal.
  • surround /səˈɹaʊnd/ (动词) — 包圍 /包围, 圍繞 /围绕. To encircle something or simultaneously extend in all directions.
  • organism /ˈɔɹ.ɡəˌnɪz.əm/ (名词) — 生物, 有機體 /有机体. A discrete and complete living thing, such as animal, plant, fungus or microorganism.
  • upstream /ʌpˈstɹiːm/ (形容词) — 上游. In a direction against the flow of a current or stream of fluid (typically water); upriver.
  • kinetic /kɪˈnɛtɪk/ (形容词) — 運動的 /运动的, 動的 /动的. Relating to motion.
  • divert /daɪˈvɝt/ (动词) — 轉移 /转移. To turn aside from a course.
  • hydropower (名词) — 水力發電 /水力发电. hydroelectric power
  • pollutant /pəˈl(j)uːtənt/ (名词) — 污染物. A foreign substance that makes something dirty, or impure, especially waste from human activities.

视频中出现的短语动词

  • check out (动词) — 退房. To record the departure or withdrawal of someone or something (such as guests, employees, books, etc.).

需要注意的发音

  • 长单词——注意重音位置: electricity /ɪˌlɛkˈtɹɪsɪti/, electrical /ɪˈlɛktɹɪkəl/, disadvantage /ˌdɪsədˈvæntɪd͡ʒ/, generator /ˈdʒɛnəɹeɪtə(ɹ)/, organism /ˈɔɹ.ɡəˌnɪz.əm/

如何用这段视频练习

  1. 先完整听一遍视频，不要开口，记下不认识的单词。
  2. 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
  3. 录下自己的声音并与原声对比，特别注意 dam, disadvantage, turbine 这类单词。

视频中的语法

说话人最常用的结构，并附上视频中的原话：

结构视频中的用法
被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的is called · is often held · is released

什么是跟读法？

跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。

影子跟读法: 阅读完整分步指南 →