跟读练习: Glow in the Dark Lava Lamp! - 通过视频学习英语口语
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60 句
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Have you ever wondered why do highlighters seem to glow so brightly?
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We are going to learn about all of this and more today with my glowing lava lamp experiment.
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Hi everyone, I'm Emily Calandrelli,
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MIT engineer and host of Emily's Wonder Lab on Netflix and on my channel we learn about all things science and space.
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So grab those highlighters and those black lights
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because this kitchen is about to glow for this one
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you're going to need a glass of water filled about
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three -fourths the way up a yellow highlighter pliers oil to
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fill your glass the rest of the way up a black light
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and a fourth cup of salt adults
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and parents you'll want to do this one take your pliers
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and grab the inside of the end of your highlighter and just bend it in, bend it towards the center and pop, it comes right off.
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Now, I'm gonna wear gloves for this one.
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You don't need to because it is just highlighter ink after all, but I don't want my fingers to get stained, so I'm going to.
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So go ahead and take the tube that's inside the highlighter out.
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This contains your highlighter ink.
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Now, what you wanna do is squeeze it inside your glass of water.
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Three, two, one.
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Doesn't that look so cool?
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Now you'll notice that the highlighter seems to glow even though we don't have our black light on.
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Why is that?
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Well, it's because highlighter contains phosphors and phosphors make this fluorescent.
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That means it has the ability to absorb ultraviolet light and reinvent some of that light as visible light,
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light we see with our eyes basically it means it glows
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but where is the ultraviolet light right that usually comes from our black light
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but we don't have that on there is always ambient ultraviolet light in any room
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that you're in and
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that is what is making our highlighter glow next you want to take your oil
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and fill your glass the rest of the way up
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so you'll notice that the oil is rising to the top this is because oil is less dense than water.
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So it's going to float right on top of the water.
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And now we can make this glow.
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Three, two, one.
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Oh, look at that.
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So you can see everywhere that the highlighter is, is glowing.
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It is actually fluorescing.
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And now we can transform this into a lava lamp with our salt.
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So what you want to do is just take a handful of salt.
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I'm going to go ahead and turn my light on so it's glowing as we do this.
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And you may need this much, you may not.
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It depends on how many times you want to do your lava lamp.
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But just go ahead and take a handful of salt and sprinkle it all across the top.
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The salt is denser than the oil and the water
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and as it falls down through the oil it grabs on to some of
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that oil bringing the oil down to the bottom
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but then the salt dissolves and that oil is released back up to the top
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because remember oil is less dense than water
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so it rises back up to the top creating
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that lava lamp effect another way to create your lava lamp effect is with alka -seltzer tablets just go ahead
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and throw these in just like this and those bubbles are bubbling to the top.
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Now if you want to experiment within the experiments you can try different oils, you can try sugar instead of salt,
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and you can try different highlighter colors just to see what happens.
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If you try any of these let me know what you find.
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Thanks for making glow -in -the -dark lava lamps with me.
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If you like this one check out my best -selling
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Stay Curious and Keep Exploring series for 99 more science experiments that are fun for the whole family.
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I'm Emily Calandrelli.
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Subscribe to learn about all things science and space.
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And remember to stay curious and keep exploring.
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I'll see you next time.
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本课的词汇与口语要点
这节口语课以视频“Glow in the Dark Lava Lamp!”为素材。 视频中反复出现的词有：highlighter, oil, glow, salt, lava。 这段视频共有 60 个句子、693 个单词可供跟读。 讲话部分时长为 4:11。 说话人语速自然，每分钟约 166 个词，接近日常对话。 84% 的单词属于英语最常用的 3,000 词，其余的词建议在练习前先学一下。
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 |
|---|---|---|
| glow 动词 | /ɡloʊ/ | 發光 /发光, 發亮 /发亮 |
| lamp 名词 | /ˈlæ̝mp/ | 燈 /灯, 電燈 /电灯 |
| lava 名词 | /ˈlɑvə/ | 熔岩 |
| experiment 名词 | /ɪkˈspɛɹ.ə.mənt/ | 實驗 /实验 |
| dense 形容词 | /ˈdɛns/ | 密, 稠密 |
| curious 形容词 | /ˈkjʊɹ.i.əs/ | 好奇, 有好奇心 |
| explore 动词 | /ɪkˈsploɹ/ | 探索, 探險 /探险 |
| bubble 名词 | /ˈbʌbəl/ | 泡, 氣泡 /气泡 |
| bend 动词 | /bɛnd/ | 彎 /弯 |
| handful 名词 | /ˈhæn(d)fʊl/ | 少數 /少数 |
| finger 名词 | /ˈfɪŋɡɚ/ | 手指, 指頭 /指头 |
| visible 形容词 | /ˈvɪzɪb(ə)l/ | 看得見 /看得见, 可看見的 /可看见的 |
| tube 名词 | /tuːb/ | 筒 |
| depend 动词 | /dɪˈpɛnd/ | 信任, 信賴 /信赖 |
| transform 动词 | /tɹænsˈfɔɹm/ | 變換 /变换, 變形 /变形 |
视频中出现的短语动词
| 单词 | 发音 | 释义 |
|---|---|---|
| go ahead 动词 | /ˌɡoʊ əˈhɛd/ | 請便 /请便 |
| check out 动词 | 退房 | |
| fall down 动词 | /fɔl ˈdaʊn/ | 落下, 倒下 |
值得反复跟读的句子
视频中简短而完整的句子，可以直接用在日常对话里：
- Have you ever wondered why do highlighters seem to glow so brightly?
- Doesn't that look so cool?
- I'll see you next time.
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 |
|---|---|
| 比较级 -er than / more … than — 比较两个事物 | less dense than · denser than |
| 动词 + -ing enjoy、keep、stop… + -ing — 后接 -ing 形式的动词 | Keep Exploring |
| 现在进行时 am/is/are + -ing — 此刻或近期正在发生的事 | is making · is rising · is glowing |
| “going to” 表将来 be going to + 动词 — 计划或明显即将发生的事 | are going to learn · you're going to need · gonna wear |
需要注意的发音
说话人用了 18 次缩略和弱读形式，例如 I'm, don't, you'll。请按听到的简短形式来说。
- 长单词——注意重音位置: experiment /ɪkˈspɛɹ.ə.mənt/, ultraviolet /ˌʌltɹəˈvaɪələt/
中文母语者容易读错的音：
- /v/ — 不要读成 /w/，上齿轻触下唇: lava /ˈlɑvə/, visible /ˈvɪzɪb(ə)l/, glove /ɡlʌv/, ultraviolet /ˌʌltɹəˈvaɪələt/, dissolve /dɪˈzɑlv/
- 词尾辅音 — 要读清楚，后面不要加元音: lamp /ˈlæ̝mp/, experiment /ɪkˈspɛɹ.ə.mənt/, dense /ˈdɛns/, curious /ˈkjʊɹ.i.əs/, bend /bɛnd/
- /r/ 和 /l/ 的区别: explore /ɪkˈsploɹ/, ultraviolet /ˌʌltɹəˈvaɪələt/, pliers /ˈplaɪ.ə(ɹ)z/, brightly /ˈbɹaɪtli/, fluoresce /fləˈɹɛs/
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 glow, lamp, lava 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。