跟读练习: Reading Explorer Foundation, Unit-11 Ichthyosaurs - 通过视频学习英语口语
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While dinosaurs walked the Earth,
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sea monsters called ichthyosaurs ruled the world's oceans.
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Icthyosaurs were ancient reptiles.
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They first appeared about 251 million years ago,
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during the Triassic period, about 20 million years before dinosaurs came about.
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True to their name, which means fish lizards in Greek, the earliest ichthyosaurs looked much like lizards with fins.
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Over a period of 100 million years, their bodies changed and they developed fish-like tails.
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They had long, narrow skulls and jaws with sharp teeth.
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These teeth were used to catch and eat animals like fish and squid.
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Their eyes were the largest ever recorded of any animal.
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In fact, one species, Temnodontosaurus, had eyes that were over 10 inches wide.
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Large eyes helped ichthyosaurs see through the dark waters of the deep ocean.
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Icthyosaurs were different sizes.
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Some were only around 60 centimeters long, but the longest were about 26 meters long.
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Icthyosaurs had paddle-like fins and a large tail,
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which helped them swim at speeds of around 35 kilometers per hour.
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Altogether, these qualities put ichthyosaurs at the top of the food chain.
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By the late Cretaceous period,
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about 25 million years before an asteroid wiped out the dinosaurs, ichthyosaurs became extinct.
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Some scientists believe it may have been a result of climate change.
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But the exact reason why these early sea monsters died out is still a mystery.
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本课的词汇与口语要点
这段视频共有 21 个句子、221 个单词可供跟读。 讲话部分时长为 2:28。 说话人语速较慢，每分钟约 90 个词，你有足够的时间模仿每一个音。 只有 77% 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 |
|---|---|---|
| dinosaur 名词 | /ˈdaɪnəsoɹ/ | 恐龍 /恐龙 |
| tail 名词 | /ˈteɪ̯l/ | йиба, 尾 |
| fin 名词 | /fɪn/ | 鰭 /鳍, 魚鰭 /鱼鳍 |
| lizard 名词 | /ˈlɪzɚd/ | 蜥蜴 |
| sharp 形容词 | /ʃɑɹp/ | 銳利 /锐利, 尖銳 /尖锐 |
| mystery 名词 | /ˈmɪs.t(ə.)ɹi/ | 謎 /谜, 謎團 /谜团 |
| narrow 形容词 | /ˈnæɹəʊ/ | 窄 |
| scientist 名词 | /ˈsaɪəntəst/ | 科學家 /科学家 |
| swim 动词 | /swɪm/ | 游泳 |
| meter 名词 | /ˈmitəɹ/ | 計量表 /计量表 |
| skull 名词 | /ˈskʌl/ | 頭骨 /头骨, 頭蓋骨 /头盖骨 |
| wipe 动词 | /waɪp/ | 擦, 擦拭 |
| jaw 名词 | /d͡ʒɔː/ | 顎 /颚, 下顎 /下颚 |
| asteroid 名词 | /ˈæst(ə)ɹɔɪd/ | 小行星 |
| ichthyosaur 名词 | /ˈɪkθiəsɔːɹ/ | 魚龍 /鱼龙 |
视频中出现的短语动词
| 单词 | 释义 |
|---|---|
| see through 动词 | 看透 |
需要注意的发音
- “th” 音: altogether /ɔl.tuˈɡɛð.ɚ/, ichthyosaur /ˈɪkθiəsɔːɹ/
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 dinosaur, tail, fin 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。