跟读练习: How Do Rainbows Form? - 通过视频学习英语口语
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1
Sunny days are always fun, but I like rainy days too.
2
I don't mind getting a bit wet when I play in the rain or jump in puddles.
3
With a bit of luck, it can also be sunny and rainy at the same time.
4
The perfect time to see a rainbow.
5
You can't touch a rainbow and as much as you wish for it to be true, There's no pot of gold at the end.
6
So what exactly is a rainbow and how do they form?
7
The light from the sun is actually a mixture of all the colours in the visible light spectrum.
8
We call this white light.
9
A rainbow is caused by light being refracted when entering a droplet of water.
10
then reflected inside on the back of the droplet and refracted again when leaving it.
11
In a primary rainbow, the arc shows red on the outer part and violet on the inner side.
12
We can model and observe a rainbow using a prism.
13
you When the prism is placed between the source of light and a solid surface, the light is broken up into all the colours of a rainbow.
14
This is because each colour is a different wavelength of light and the prism bends the different wavelengths by different amounts.
15
In nature, a rainbow can form whenever light interacts with water droplets.
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What other ways can rainbows form?
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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“How Do Rainbows Form?”为素材。 视频中反复出现的词有：rainbow, droplet, prism, colour。 这段视频共有 17 个句子、237 个单词可供跟读。 讲话部分时长为 1:37。 说话人语速平稳，每分钟约 146 个词，很适合跟读。 只有 76% 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
视频中最难的 13 个单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| droplet 名词 | /ˈdɹɑplət/ | 小滴 |
| prism 名词 | /ˈpɹɪzəm/ | 稜柱 /棱柱 |
| wavelength 名词 | /ˈweɪvˌlɛŋ(k)θ/ | 波長 /波长 |
| rainy 形容词 | /ˈɹeɪni/ | 多雨 |
| sunny 形容词 | /ˈsʌni/ | 晴朗 |
| puddle 名词 | /ˈpʌdəl/ | 水坑, 水窪 /水洼 |
| violet 名词 | /ˈvaɪ.ə.lət/ | 紫羅蘭 /紫罗兰, 堇菜 |
| subscribe 动词 | /səbˈskɹaɪb/ | 簽署 /签署 |
| interact 动词 | /ɪn.təˈɹækt/ | 互動 /互动 |
| observe 动词 | /əbˈzɜːv/ | 遵守, 遵循 |
| bend 动词 | /bɛnd/ | 彎 /弯 |
| mixture 名词 | /ˈmɪkst͡ʃɚ/ | 混合 |
| spectrum 名词 | /ˈspɛktɹəm/ | 範圍 /范围, 光譜 /光谱 |
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 caused · is placed |
| 动词 + -ing enjoy、keep、stop… + -ing — 后接 -ing 形式的动词 | mind getting |
需要注意的发音
说话人用了 3 次缩略和弱读形式，例如 don't, can't。请按听到的简短形式来说。
中文母语者容易读错的音：
- /v/ — 不要读成 /w/，上齿轻触下唇: wavelength /ˈweɪvˌlɛŋ(k)θ/, violet /ˈvaɪ.ə.lət/, observe /əbˈzɜːv/
- 词尾辅音 — 要读清楚，后面不要加元音: droplet /ˈdɹɑplət/, wavelength /ˈweɪvˌlɛŋ(k)θ/, violet /ˈvaɪ.ə.lət/, subscribe /səbˈskɹaɪb/, interact /ɪn.təˈɹækt/
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 droplet, prism, wavelength 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。