跟读练习: TRACK 70 - BASIC IELTS LISTENING UNIT 4: POPULAR SCIENCE - 通过视频学习英语口语
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Exercise 3.
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Lobsters.
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Listen to the talk and fill in the missing information in the notes below.
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Good morning, everyone.
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Today I will talk about lobsters.
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Many of our listeners wrote to me to ask if lobsters really scream when they are boiled,
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and why they turn red when they are cooked.
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These are very good questions.
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Well, let me ask you a question.
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If you were sitting in a vat of boiling water, wouldn't you scream and turn red too?
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But in the lobster's case, there is no scream, and there is a chemical reason for the change in color.
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Noises are produced as a lobster is boiled alive, but the sounds are not voices.
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As the lobster's body heats up in the shell pockets of air in the cavities
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and joints expand
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if enough pressure builds inside the body the air will make
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whistle-like sounds as it escapes through small openings in the shell as for For the color shift,
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a lobster's shell contains red pigment molecules that combine with a protein to create the camouflaging colors of the lobster.
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Live lobsters are usually blue-green or brown with flecks of yellow.
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When the lobster is boiled, the protein is denatured or deformed by the heat.
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The pigment remains, however, turning the shell red.
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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“TRACK 70 - BASIC IELTS LISTENING UNIT 4: POPULAR SCIENCE”为素材。 视频中反复出现的词有：lobster, shell, boiled, scream, color。 这段视频共有 20 个句子、216 个单词可供跟读。 讲话部分时长为 1:58。 说话人语速平稳，每分钟约 110 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 9 个单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| lobster 名词 | /ˈlɑb.stɚ/ | 龍蝦 /龙虾, 海螯蝦 /海螯虾 |
| boil 动词 | /bɔɪ(ə)l/ | 煮沸, 煮 |
| scream 动词 | /skɹiːm/ | 叫喊, 嗷叫 |
| pigment 名词 | /ˈpɪɡ.mənt/ | 色素 |
| listener 名词 | /ˈlɪs(ə)nɚ/ | 傾聽者 /倾听者, 聽者 /听者 |
| cavity 名词 | /ˈkæv.ɪt.i/ | 腔 |
| molecule 名词 | /ˈmɑ.lɪ.kjul/ | 分子 |
| whistle 名词 | /ˈwɪs(ə)l/ | 哨子, 口哨 |
| combine 动词 | /kəmˈbaɪn/ | 結合 /结合, 組合 /组合 |
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 | are boiled · are cooked · are produced |
| “will” 表将来 will + 动词 — 决定、承诺或预测 | will talk · will make |
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: pigment /ˈpɪɡ.mənt/, camouflage /ˈkæ.məˌflɑːʒ/
- /æ/ — 嘴张大，不要读成 /e/: camouflage /ˈkæ.məˌflɑːʒ/, cavity /ˈkæv.ɪt.i/
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 lobster, boil, scream 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。