跟读练习: Why You Don’t Need 8 Glasses of Water a Day | Body Stuff with Dr. Jen Gunter | TED - 通过YouTube学习英语口语
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You know that whole thing about drinking eight glasses of water a day?
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You know that whole thing about drinking eight glasses of water a day?
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Sorry to have to tell you this, but it's a myth.
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It won't make your skin brighter, it won't make you feel clear-headed, it won't make you more energetic.
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It might, however, make you have to pee a lot.
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Many people don't understand the biology behind their bodies.
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There's a lot of misinformation out there, but the truth is that when you understand how your systems function, you're able to make better decisions.
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You're not as prone to fall for hype or pseudoscience.
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You'll feel empowered to understand what's really going on.
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One myth that really bugs me is the idea that you need eight glasses of water a day.
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Honestly, it's pretty shocking how ingrained it is.
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You hear it on TV, you see it in articles.
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Like I said, it's nonsense.
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For the most part, your body will tell you when you need to drink water, because you've got these wonderful, amazing, undervalued things.
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Kidneys.
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Kidneys are the bean-shaped organs located to either side of your spine, right below your ribs.
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They're often thought of as a filter or a waste removal system, but that doesn't do the kidneys justice.
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Your body is an environment where everything, fluid and chemicals, need to be in a delicate balance.
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The kidneys do a lot of the heavy lifting when it comes to this balance.
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Every day blood in your body passes through the kidneys.
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What you eat, drink, the temperature around you, how much you exercise, all of this affects what's going on in your body.
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Your kidneys, along with your nervous system and various hormones, are constantly watching many gauges and making adjustments about fluids,
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salt, and levels of other substances in real time.
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They do this with about one million tiny structures called nephrons.
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These nephrons are kind of like workers on a conveyor belt, actively adding things and taking things away, things like sodium, glucose or sugar,
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calcium, amino acids, and water, to make sure the body maintains homeostasis or balance.
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If levels of anything get too high or too low, then that can be harmful,
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and it is the job of the kidneys to keep the levels of many of these substances in the just right zone.
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Substances that aren't needed leave the kidney and head to the bladder, where you excrete them in the form of urine.
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So where do 8 glasses of water a day fit in?
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They don't.
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Notice that I did not say that the kidney function is improved with excess water.
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Imagine that you're sweating a lot, so you're losing water from your blood.
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The kidneys know your blood volume is dropping ever so slightly, and that your blood is getting ever so slightly saltier.
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They compensate by absorbing more water back into the blood, making the urine more concentrated.
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If the kidneys sense enough fluid can't be reabsorbed from the urine, you're signaled to drink, meaning you get thirsty.
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If you don't have fluid available, the thirst message gets stronger and stronger.
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A person facing real dehydration won't be unsure if they need water.
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They'll do whatever they need to get it.
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It's one of our most basic instincts that's evolved over a
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very long time in environments where clean water wasn't nearly as readily available as it is today.
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So thanks to your kidneys, your body is really good at maintaining hydration.
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But if you stop counting eight glasses of water a day, how much should you be drinking the answer is simple there is no should
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when you feel thirsty drink some water you can trust your body unless you have kidney stones
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or elderly sometimes our messaging systems get a little worn with age
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or your doctor has told you otherwise constantly monitoring how much
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water you drink is not really necessary here's a point that's often missed every single thing you consume contains water.
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Your morning coffee has water, so does your breakfast.
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And that's snack, an apple, an orange, a glass of juice, a granola bar.
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Just like you, they're made of water too.
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So as long as you're listening to your body's internal sense of thirst, there's really no need to be counting those eight glasses.
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为什么要通过这个视频练习口语？
通过观看并模仿这个视频的内容，你可以提升你的英语口语练习能力。视频中，Dr. Jen Gunter解答了关于每日饮水八杯的常见误解，深入浅出地向观众解释了身体如何调节水分，这为你提供了一个生动的说话背景。通过学习她的表达方式，你不仅能够掌握科学知识，还能提高自己的语音语调。在看YouTube学英语的过程中，模仿讲者的语音和语调，帮助你培养更自然的英语交流能力，进而自信地与他人对话。
语法与表达分析
在讲解过程中，Dr. Gunter使用了几个关键的语言结构，以下是一些值得注意的表达：
- 不需要的表达： “they don’t.” 这种简洁的否定表达，强调了信息的明确性，适合用在日常对话中。
- 描述功能的句子： “The kidneys do a lot of the heavy lifting...” 使用“do a lot of”这样的短语更生动地表现了功能，非常适合在口语交流中使用。
- 条件句结构： “If levels of anything get too high or too low...” 这个条件句展示了逻辑关系，是英语口语中高效沟通的重要工具。
- 个人感受的表达： “It might, however, make you have to pee a lot.” 使用“might”这种表达方式可以使语言更为自然，表现不确定性，适合在进行讨论时使用。
常见发音陷阱
在视频中，有些单词的发音可能会对学习者构成挑战。例如，“kidneys” 和 “dehydration”这两个词可能很难正确发音。建议你模仿Dr. Gunter的发音，多练习这些关键词。注意视频中的语调和重音变化，尤其在不同句子中“thirsty”和“drink”的发音上。通过英语影子跟读的方式，多次重复这些发音，会帮助你克服这些挑战，提升自己的语音准确性。
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。