跟读练习: Global Warming and Climate Change Explained - 通过视频学习英语口语
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Climate change has become a huge issue lately, to the point where it's not only rocking the world of science, but politics as well.
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Yet, many people are still unaware of what climate change is and what some of the potential implications are.
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So, in this video, we'll be going over the basic concept of climate change.
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The sun's rays take roughly 8 minutes to travel that 93 million mile distance to Earth, where it will light up our beautiful skies.
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The thing is that the sun doesn't just release those golden rays of light we see in the morning.
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It releases radiation in other parts of the electromagnetic spectrum, like UV or the infrared radiation we feel in the form of heat.
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Sometimes the emitted infrared radiation will be reflected back into space when it hits
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Earth, but other times that reflected infrared radiation can be trapped by a layer of gas in our atmosphere called greenhouse gases,
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which typically consist of water vapor, methane, nitrous oxide and most infamously carbon and carbon dioxide.
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Imprisoned by that pesky greenhouse gas the infrared radiation has nowhere else to go
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and remains on earth where it begins to heat up the planet, a phenomena we have come to call global warming.
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Global warming can have many implications.
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For example, it can melt glaciers which can result in sea levels rising.
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It can also cause more evaporation leading to more precipitation
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which can change the weather patterns in certain areas causing to become wetter or drier.
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This This change in overall weather patterns in certain regions is called climate change.
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Climate change isn't just wreaking havoc via droughts and rising sea levels.
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In Siberia, for example, the permafrost is now thawing out and may potentially release many bacteria and viruses that are trapped inside.
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Of course, that's just one of the many problems we're facing now.
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In our climate change series, we'll be taking a look at the more complicated consequences of climate change,
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as well as some of the solutions scientists are working on to give our blue rock a second chance.
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So, be sure to hit that subscribe button, and most importantly, don't forget to stay tuned for more science videos.
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本课的词汇与口语要点
这节口语课以视频“Global Warming and Climate Change Explained”为素材。 视频中反复出现的词有：climate, radiation, infrared, earth, release。 这段视频共有 22 个句子、369 个单词可供跟读。 讲话部分时长为 1:59。 说话人语速较快，每分钟约 186 个词，会出现较多连读和弱读。 只有 80% 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 个值得学习的单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| radiation 名词 | /ˌɹeɪ.diˈeɪ.ʃən/ | 放射, 輻射 /辐射 |
| infrared 形容词 | /ˌɪnfɹəˈɹɛd/ | 紅外 /红外 |
| reflect 动词 | /ɹɪˈflɛkt/ | 反映, 反射 |
| trap 名词 | /tɹæp/ | 陷阱, 圈套 |
| greenhouse 名词 | /ˈɡɹːnˌ(h)aʊs/ | 溫室 /温室 |
| complicated 形容词 | /ˈkɑm.plɪˌkeɪ.tɪd/ | 複雜 /复杂 |
| atmosphere 名词 | /ˈætməsˌfɪɹ/ | 大氣 /大气, 氣圈 /气圈 |
| virus 名词 | /ˈvaɪ.ɹəs/ | 病毒 |
| layer 名词 | /ˈleɪ̯ɚ/ | 層 /层 |
| nowhere 副词 | /ˈnoʊ.(h)wɛɹ/ | 無處 /无处 |
| tune 名词 | /tjuːn/ | 曲調 /曲调, 曲子 |
| spectrum 名词 | /ˈspɛktɹəm/ | 範圍 /范围, 光譜 /光谱 |
| scientist 名词 | /ˈsaɪəntəst/ | 科學家 /科学家 |
| phenomenon 名词 | /fəˈnɒm.ɪ.nən/ | 現象 /现象 |
| importantly 副词 | /ɪmˈpɔɹ.tənt.li/ | 重要的是... |
视频中出现的短语动词
| 单词 | 释义 |
|---|---|
| heat up 动词 | 加熱 /加热 |
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 | will be reflected · can be trapped · is called |
| 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 | has become · have come |
需要注意的发音
说话人用了 6 次缩略和弱读形式，例如 we'll, doesn't, don't。请按听到的简短形式来说。
- “th” 音: methane /ˈmiːθeɪn/, thaw /θɔː/
- “sh” 和 “zh” 音: radiation /ˌɹeɪ.diˈeɪ.ʃən/, implication /ˌɪmpləˈkeɪʃən/, potentially /pəˈtɛnʃ(ə)li/, precipitation /pɹɪˌsɪpɪˈteɪʃn̩/, glacier /ˈɡleɪ.ʃɚ/
- 长单词——注意重音位置: radiation /ˌɹeɪ.diˈeɪ.ʃən/, implication /ˌɪmpləˈkeɪʃən/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/, potentially /pəˈtɛnʃ(ə)li/, phenomenon /fəˈnɒm.ɪ.nən/
中文母语者容易读错的音：
- /v/ — 不要读成 /w/，上齿轻触下唇: virus /ˈvaɪ.ɹəs/, vapor /ˈveɪpɚ/, havoc /ˈhævək/, evaporation /ɪˌvæpəˈɹeɪʃən/
- 词尾辅音 — 要读清楚，后面不要加元音: infrared /ˌɪnfɹəˈɹɛd/, reflect /ɹɪˈflɛkt/, trap /tɹæp/, greenhouse /ˈɡɹːnˌ(h)aʊs/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/
- /r/ 和 /l/ 的区别: reflect /ɹɪˈflɛkt/, roughly /ˈɹʌf.li/, importantly /ɪmˈpɔɹ.tənt.li/, electromagnetic /ɪˌlɛk.tɹoʊ.mæɡˈnɛ.tɪk/
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 radiation, infrared, reflect 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。