跟读练习: Cool Down Your Room... With a FRIDGE? - 通过视频学习英语口语

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Can you cool your room by leaving the fridge open?

When you first open the door, your face feels cool.

But a fridge doesn't create cold.

It removes heat.

Inside the walls is a refrigerant like isobutane.

If kept under low pressure, it can boil at very low temperatures.

And to boil, it must absorb energy.

So it pulls heat out of your food the same way evaporating sweat cools your skin.

A compressor then squeezes the gas until it's hotter than your kitchen, so the heat escapes through the coils on the back.

But heat never flows from cold to hot on its own.

It costs energy.

And every bit of electricity the compressor uses also ends up as heat in your room.

When the door is open, the fridge pulls the same heat back in and dumps it out the back along with the compressor's waste heat.

You've now got a machine that moves heat in a circle and bills you for it.

Your kitchen gets warmer with the heat pulled from your food plus the compressor's waste heat, and your food spoils anyway.

A fridge was never a cold machine.

It's a heat pump.

But if you really want to cool your room with it, simply hang the hot coils out of your window so the heat leaves the building.

Now, you haven't cheated thermodynamics, you've invented air conditioning.

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本课的词汇与口语要点

这节口语课以视频“Cool Down Your Room... With a FRIDGE?”为素材。视频中反复出现的词有：heat, fridge, cool, cold。这段视频共有 19 个句子、232 个单词可供跟读。讲话部分时长为 1:12。说话人语速较快，每分钟约 194 个词，会出现较多连读和弱读。只有 81% 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 13 个值得学习的单词，附发音和释义：

单词	发音	释义
boil 动词	/bɔɪ(ə)l/	煮沸, 煮
coil 名词	/kɔɪl/	螺線 /螺线, 螺旋
pump 名词	/pʌmp/	泵, 唧筒
leaf 名词	/lif/	еезы, еер
sweat 动词	/swɛt/	流汗, 發汗 /发汗
cheat 动词	/ˈt͡ʃiːt/	作弊, 使诈
squeeze 动词	/skwiːz/	壓榨, 擠壓 /挤压
absorb 动词	/æbˈsɔɹb/	吸收
invent 动词	/ɪnˈvɛnt/	發明 /发明
evaporate 动词	/ɪˈvæp.ə.ɹeɪt/	蒸發掉 /蒸发掉, 揮發 /挥发
isobutane 名词		異丁烷 /异丁烷
refrigerant 名词		製冷劑 /制冷剂, 冷凍劑 /冷冻剂
thermodynamics 名词	/ˌθɜː(ɹ)moʊdaɪˈnæmɪks/	熱力學 /热力学

视频中出现的短语动词

单词	释义
end up 动词	到达

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
现在完成时 have/has + 过去分词 — 过去发生但与现在仍有关联的事	haven't cheated
比较级 -er than / more … than — 比较两个事物	hotter than
义务：must / have to / need to 表示某事是必要的	must absorb

需要注意的发音

说话人用了 4 次缩略和弱读形式，例如 you've, doesn't, haven't。请按听到的简短形式来说。

长单词——注意重音位置: electricity /ɪˌlɛkˈtɹɪsɪti/, evaporate /ɪˈvæp.ə.ɹeɪt/, thermodynamics /ˌθɜː(ɹ)moʊdaɪˈnæmɪks/

中文母语者容易读错的音：

/v/ — 不要读成 /w/，上齿轻触下唇: invent /ɪnˈvɛnt/, evaporate /ɪˈvæp.ə.ɹeɪt/
词尾辅音 — 要读清楚，后面不要加元音: pump /pʌmp/, leaf /lif/, sweat /swɛt/, dump /dʌmp/, cheat /ˈt͡ʃiːt/
/æ/ — 嘴张大，不要读成 /e/: absorb /æbˈsɔɹb/, evaporate /ɪˈvæp.ə.ɹeɪt/, thermodynamics /ˌθɜː(ɹ)moʊdaɪˈnæmɪks/

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。
先用 0.75 倍速逐句跟读，熟练之后再回到正常速度。
录下自己的声音并与原声对比，特别注意 boil, coil, pump 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。

影子跟读法: 阅读完整分步指南 →

跟读练习: Cool Down Your Room... With a FRIDGE? - 通过视频学习英语口语

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