跟读练习: How To Extract Your DNA At Home 😮 - 通过视频学习英语口语
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8 句
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1
Take a sip of salt water, then swish it around your mouth really hard.
2
As it moves across your cheeks, it scrapes off thousands of loose cells.
3
Now spit the water into a cup and add a little dish soap.
4
The soap works the same way it does on dishes, breaking apart fat and grease.
5
And since the outside of your cells is wrapped in a fatty membrane, they split open.
6
Your DNA leaks out into the liquid, but you still can't see it.
7
So next, gently pour cold rubbing alcohol on top, which will pull the DNA out of the water and make the tiny strands clump together.
8
After a few minutes, you'll see cloudy white strings floating in the cup, and that is your DNA.
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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 To Extract Your DNA At Home 😮”为素材。 这段视频共有 8 个句子、127 个单词可供跟读。 讲话部分时长为 0:43。 说话人语速自然，每分钟约 176 个词，接近日常对话。
视频中的重点词汇
视频中最难的 14 个单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| soap 名词 | /soʊp/ | йизы, 雪文 |
| dish 名词 | /dɪʃ/ | 碟子, 盤子 /盘子 |
| scrape 动词 | /skɹeɪp/ | 刮, 擦 |
| cloudy 形容词 | /ˈklaʊ̯diː/ | 多雲 /多云 |
| strand 名词 | /ˈstɹænd/ | 綹 /绺, 一綹頭髮 /一绺头发 |
| grease 名词 | /ɡɹis/ | 油脂, 脂肪 |
| membrane 名词 | /ˈmɛm.bɹeɪn/ | 薄膜 |
| spit 动词 | /spɪt/ | 吐痰, 吐 |
| float 动词 | /fləʊt/ | 浮, 漂浮 |
| cheek 名词 | /t͡ʃiːk/ | 臉頰 /脸颊, 腮 |
| rub 动词 | /ɹʌb/ | 擦, 磨 |
| leak 名词 | /liːk/ | 漏洞 |
| pour 动词 | /poɹ/ | 倒 |
| wrap 动词 | /ɹæp/ | 包裝 /包装, 包 |
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 wrapped |
| 定语从句 who / which + 从句 — 补充说明人或事物 | top, which will |
| “will” 表将来 will + 动词 — 决定、承诺或预测 | will pull · you'll see |
需要注意的发音
中文母语者容易读错的音：
- 词尾辅音 — 要读清楚，后面不要加元音: soap /soʊp/, dish /dɪʃ/, scrape /skɹeɪp/, strand /ˈstɹænd/, grease /ɡɹis/
- /æ/ — 嘴张大，不要读成 /e/: strand /ˈstɹænd/, wrap /ɹæp/
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 soap, dish, scrape 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。