跟读练习: Phát âm chuẩn - Anh ngữ đặc biệt: A Gene for Gray Hair Identified (VOA) - 通过YouTube学习英语口语
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From VOA Learning English, this is the Health Report.
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From VOA Learning English, this is the Health Report.
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Researchers say they have identified a gene that can predict if you will have gray hair.
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The gene IRF4 was found and studied from the genetic codes of more than 6,300 people from Brazil,
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Colombia, Chile, Mexico and Peru.
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The group included people of mixed European,
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Native American and African ancestries.
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The IRF4 gene controls melanin production,
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which is responsible for the color of hair, skin, and eyes.
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Andres Ruiz-Lenares is a professor of human genetics at University College London.
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He is the paper's lead author.
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He and his team identified a special gene found in about 15% of people with European ancestry.
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The people who carry this gene are more likely to have early gray hair.
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The researchers found that Native Americans do not carry this gene.
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The researchers say that gray hair is not influenced just by genetics,
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stress, or a terrible event can also contribute to a gray head of hair.
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The researchers say this study could be helpful to developers of hair care products.
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It could lead to treatments that may prevent or reverse the process that turns hair gray.
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The study also identified genes for other hair qualities.
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These included curly hair, beard, and eyebrow thickness.
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Ruiz Linares says linking genes to hair qualities is important.
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He says it could lead to better analysis of genetic information collected at crime scenes.
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The journal Nature Communications published the study.
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For VOA Learning English, I'm Carolyn Prasuti.
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为什么要通过这个视频练习口语？
在学习英语的过程中，听说练习是至关重要的。通过观看视频，你不仅可以提高听力，还能增强口语表达能力。这个视频谈论了关于头发灰白的基因研究，所涉及的科技及医学术语将帮助你在相关话题上找到更多的自信。此外，这种背景知识可以拓宽你对英语表达的理解，尤其是在科学和健康领域中生动的讨论。
通过对这个视频的练习，学生可以学习如何在复杂的话题中流利地表达自己的观点。使用 看YouTube学英语 的方式，你可以反复听取发音，进行 shadowing 或 shadow speech 练习，以提升口语能力，增强语言流利度。
语法与表达在上下文中的运用
视频中的演讲者使用了多种语法结构和表达方式，以下是三个关键例子：
- 被动语态：“A gene that can predict if you will have gray hair”提到了基因的功能，强调基因的作用而非主语。这样的表达方式在科学讨论中非常常见。
- 条件句：“The people who carry this gene are more likely to have early gray hair”使用了条件语来说明可能的结果，增强了信息的逻辑性。
- 非限定性定语从句：“The study also identified genes for other hair qualities, including curly hair, beard, and eyebrow thickness”帮助扩展信息，提供了额外的细节。
通过理解这些语法结构，学习者可以在使用英语时更加自信和准确。
常见的发音陷阱
在这个视频中，有几个词汇的发音可能会对学习者造成一定困难。以下是一些需要注意的点：
- gene (基因) - 学习发音时注意 [dʒiːn]，确保清晰且准确。
- melanin (黑色素) - 此词的发音 [ˈmɛl.ə.nɪn] 需特别关注中间的音节。
- ancestries (血统) - 该词发音为 [ˈæn.ses.triz]，注意重音的放置。
针对这些发音，可以运用 shadowspeaks 的方法进行模仿和练习，以克服发音障碍，提升流利程度。
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。