跟读练习: What is Energy? - 通过视频学习英语口语
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28 句
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1
Energy is all around us.
2
Scientists define energy as the ability to do work or cause change.
3
We cannot see energy, but we can see the things that energy does.
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energy makes things move it powers the machines we use it can make things get hotter
5
or produce sound energy is used to light up our homes
6
and cities and power the vehicles we use all organisms need energy to grow reproduce and carry out life processes.
7
Plants use the light energy from the sun to make food in the form of sugar.
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This energy is passed to animals when they feed on plants and other animals.
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There are two main forms of energy, kinetic energy and potential energy.
10
Kinetic energy is the energy of movement.
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Mechanical energy, sound, light, heat and electrical energy are all examples of kinetic energy.
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You can learn more about these forms of kinetic energy in our related videos.
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energy is the energy something has due to its position, composition or state.
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The stored energy can be converted into various types of kinetic energy.
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Fuels such as petroleum, gas and wood contain a form of potential energy called chemical energy.
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When these fuels are burned, the chemical energy is converted into light and heat.
17
Potential energy due to an object's position above the ground is called gravitational potential energy.
18
A rock on top of a hill has gravitational potential energy.
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As it rolls down the hill, the potential energy is converted into kinetic as it is pulled down by the earth's gravity.
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An arrow in a bow has potential energy due to its position behind the drawn string.
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This is called Elastic Potential Energy.
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The elastic potential energy increases the more the string is drawn back.
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When the string is released, the potential energy is converted into kinetic energy as the arrow flies forward.
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That's pretty cool.
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Be sure to check out our related videos to learn more about different energy forms and conversions.
26
Thanks for watching.
27
Bye.
28
Don't forget to subscribe!
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本课的词汇与口语要点
这节 B1 级别的口语课以视频“What is Energy?”为素材。 视频中反复出现的词有：energy, potential, kinetic, converted, string。 这段视频共有 28 个句子、337 个单词可供跟读。 讲话部分时长为 3:00。 说话人语速平稳，每分钟约 112 个词，很适合跟读。 86% 的单词属于英语最常用的 3,000 词，其余的词建议在练习前先学一下。
视频中的重点词汇
视频中最难的 8 个单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| kinetic 形容词 | /kɪˈnɛtɪk/ | 運動的 /运动的, 動的 /动的 |
| elastic 形容词 | /ə-/ | 彈性的 /弹性的, 有彈力的 /有弹力的 |
| arrow 名词 | /ˈæɹəʊ/ | җян, 箭 |
| organism 名词 | /ˈɔɹ.ɡəˌnɪz.əm/ | 生物, 有機體 /有机体 |
| reproduce 动词 | /ˌɹi.pɹəˈdus/ | 複製 /复制 |
| subscribe 动词 | /səbˈskɹaɪb/ | 簽署 /签署 |
| scientist 名词 | /ˈsaɪəntəst/ | 科學家 /科学家 |
| define 动词 | /dɪˈfaɪn/ | 界定 |
视频中出现的短语动词
| 单词 | 发音 | 释义 |
|---|---|---|
| carry out 动词 | /ˈkæ.ɹi aʊt/ | 進行 /进行 |
| check out 动词 | 退房 |
需要注意的发音
- “sh” 和 “zh” 音: gravitational /ˌɡɹævɪˈteɪʃənəl/, conversion /kənˈvɝʒən/
- 长单词——注意重音位置: gravitational /ˌɡɹævɪˈteɪʃənəl/, organism /ˈɔɹ.ɡəˌnɪz.əm/
如何用这段视频练习
- 先完整听一遍视频，不要开口，记下不认识的单词。
- 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。
- 录下自己的声音并与原声对比，特别注意 kinetic, elastic, arrow 这类单词。
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。