跟读练习: How does a 3D Printer Work? + more videos | #aumsum #kids #science #education #children - 通过视频学习英语口语
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It's AumSum Time.
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How does a 3D Printer Work?
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Simple. Mix 3 and D and you get a 3D printer.
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Oh AumSum. To buy AumSum merchandise visit AumSum.com.
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A 3D printer uses a method called fused deposition modeling.
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In this method a 3D model is printed from the bottom up.
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One layer at a time by repeatedly printing over the same area.
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First, a 3D CAD drawing is fed to the printer.
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The 3D printer divides the 3D drawing into 2 dimensional, cross-sectional layers.
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These layers are basically like separate 2D prints which sit on the top of one another.
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The only difference is that there is no paper in between.
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Now if we were to use ink to print then it would not be possible to get the volume necessary.
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To build a 3D model, hence instead of ink the 3D printer may use molten plastic.
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The molten plastic is fused together using an adhesive or ultraviolet light.
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关于本课
在这一课中，学习者将通过一个有关3D打印机工作原理的视频，集中练习听力和口语。视频通过简单而形象的方式介绍了3D打印的基础知识。你将学到关键的词汇和短语，这些对理解3D打印机的操作非常重要。此外，通过shadow speech 的练习，你将提高英语发音，使你在交流中更加自信。看YouTube学英语也是一种有效的学习方式，让你在乐趣中提升语言能力。
关键词汇与短语
- 3D打印机 - 一种能够打印三维物体的机器。
- 融合沉积建模 - 一种3D打印的技术方法。
- 3D CAD图纸 - 用于3D打印的计算机辅助设计文件。
- 层 - 3D模型构建过程中的基本构成部分。
- 熔融塑料 - 3D打印机使用的材料之一。
- 粘合剂 - 用于结合材料的物质。
- 紫外线光 - 一种能让熔融塑料固化的技术。
练习提示
在观看视频时，建议你分段进行shadowspeak练习。首先，仔细听每一段，然后尝试跟读，模仿视频中的语速和语调。这将帮助你提高英语发音和表达能力。由于视频的节奏适中，适合初学者到中级学习者，你可以在每次播放后暂停，检查自己的发音。记得很多信息都集中在关键的技术术语上，这些词汇对理解和讨论3D打印技术至关重要。演练时，可以考虑用自己的话解释每个概念，以加深对内容的理解。通过这样的学习方法，你将在日常生活或职业环境中更加自信地使用英语。
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 printed · is fed · is fused |
| 用 “might / may” 表可能 might/may + 动词 — 有可能但不确定的事 | may use |
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。