跟读练习: Blue Whales: The Biggest Animal EVER! | SciShow Kids - 通过YouTube学习英语口语
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[♪ INTRO] Hey there! Squeaks was just showing me his imaginary sea monster that he drew based on some sea monsters of the past!
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[♪ INTRO] Hey there! Squeaks was just showing me his imaginary sea monster that he drew based on some sea monsters of the past!
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I think it’s great!
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I see that it has sharp teeth, big flippers, and an armored head, like the animals we learned about before.
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And I see you drew a picture of you swimming next to your monster!
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Your sea monster is HUGE!
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But even your imaginary sea monster doesn’t look as big as the biggest biggest animal that’s ever actually lived!
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Do you know what that animal is, Squeaks?
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It’s a kind of whale called the blue whale, and they’re still around today!
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Blue whales can get to be over 30 meters long, about as long as 3 school buses in a row.
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And, a blue whale’s tongue can weigh as much as an elephant.
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And just its heart can be as heavy as a car!
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So, what do you think these great big blue whales eat?
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Fish! That’s a great guess!
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And some whales, like beluga whales, do eat fish.
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They have sharp teeth that they use to catch and eat their prey.
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But some whales, like blue whales, don’t have teeth at all!
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Weird, right?
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These whales have something called baleen instead of teeth.
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Baleen is a bristly plate that is stuck to the roof of the whale’s mouth.
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It looks like a big, bristly broom inside their mouths!
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Oh, that’s a great question!
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How dooes it help them eat?
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Well, if you’ve ever seen someone cook pasta, they might have dumped it out of the pot and into a strainer when the pasta was done cooking.
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Water pours out of the strainer, but the food stays inside.
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Baleen works kind of the same way.
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When a whale that has baleen takes a gulp of water and food, they use their tongues to push all the water out through the gaps, but keep the tasty food inside.
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But if they aren’t eating fish, what are they eating?
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Blue whales eat tiny animals called krill!
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Krill are so small that we need a microscope to see them clearly.
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That’s right, Squeaks!
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Something as big as a blue whale does need to eat a lot of krill!
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And they do!
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Adult blue whales can eat 16 tons of krill each day.
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That’s as heavy as four elephants!
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Isn’t it amazing that such a huge animal eats things that are so small that we can’t even see them?!
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Baby whales are called calves, just like baby cows.
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And also like cows, whale calves drink the milk that their mothers make inside their bodies until they’re old enough to start eating krill.
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That’s because all whales, including blue whales, are mammals.
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Mammals are animals like horses, cows, dogs, and humans.
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And all mammals feed their newborn babies milk.
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That’s one of the special things that makes an animal a mammal!
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Yes, they do look more like a fish than like the other mammals.
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But fish don’t feed their babies with milk, which helps us know that whales and fish are different.
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And there’s another important feature that tells us that whales are mammals and definitely not fish.
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Whales don’t have gills to breathe in water, like fish do.
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They have lungs, just like us!
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So even though some whales can hold their breath for over an hour, they have to come up to the surface of the ocean to breathe every now and then.
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When we breathe, air goes through our nose or mouth and into our lungs.
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Whales breathe using their lungs too, but they do it in a very special way.
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They breathe in and out through a hole on the top of their head called a blowhole.
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When a whale is ready to take a breath, it comes up to the top of the water, opens its blowhole, and breathes out.
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This is called spouting.
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That air shoots up into the sky, sometimes about 12 meters high!
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That’s about as tall as six grown-ups if they stood on each other’s shoulders.
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Then, the whale breathes fresh air in through its blowhole, and goes back underwater.
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When a whale is underwater, they can pinch their blowhole closed from the inside, and seal it shut so no water gets in.
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But my favorite thing about blue whales are the amazing sounds they make.
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Blue whales, as well as lots of other whale species, can talk to each other from really far away!
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Sound travels really well in water, so one whale can hear another whale making noises even if they’re thousands of miles apart!
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Whales make lots of sounds, including squeaks, whistles, and long low booming sounds that scientists call “songs.” Here’s what a blue whale’s song sounds like.
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I think whale songs sound beautiful, too, Squeaks!
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Oh yeah. Squeaks says he still thinks his imaginary sea monster is pretty cool, but it’s even cooler that there are giant blue whales out in the ocean right now, singing to each other, eating microscopic krill, and taking care of their babies!
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Thanks for joining me here at The Fort!
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I hope you loved learning about our ocean mammal friends too.
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What was your favorite thing you got to discover?
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If you want to keep learning and having fun with Squeaks, me, and all our other friends, be sure to hit the subscribe button, and we'll see you next time on SciShow Kids!
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[♪ OUTRO]
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背景与上下文
在这段视频中，主讲者与小伙伴Squeaks讨论了巨型蓝鲸的独特之处。影片带领观众了解蓝鲸作为地球上最大的动物的生物特性及其饮食方式，强调了它们如何使用特殊的结构（称为须板）来过滤食物。透过有趣的讲解，主讲者引导孩子们思考蓝鲸如何适应海洋生活，这不仅增加了知识性，也激发了他们的好奇心。
日常交流的五个关键词
- 蓝鲸 - 世界上最大动物的代表，体长可达30米，重达200吨。
- 须板 - 蓝鲸的独特饮食结构，用来过滤小虾。
- 浮力 - 蓝鲸凭借庞大的体型能够在水中自由游动。
- 哺乳动物 - 蓝鲸是哺乳动物，与人类一样需要通过肺呼吸。
- 小虾 - 蓝鲸的主要食物，尽管体型巨大，却以这些微小生物为生。
逐步模仿指导
对于希望提高英语发音的学习者，建议采用“shadowspeak”方法来模仿视频中的对话。以下是针对本视频的详细步骤：
- 观看并听取：首先完整观看视频，注意主讲者的语调与发音。
- 选择片段：找到你喜欢的一小段，通常是您认为内容有趣或发音挑战的部分。
- 暂停与复述：播放一小段后暂停，试着重复主讲者的句子。专注于语音的音调与速度，以模拟他们的说话风格。
- 反复练习：多次重复直到感觉自然为止，可以使用“shadowing site”的资源来帮助你更好地理解单词的发音和连接。
- 自我录音：用手机或电脑录下自己的声音，再与视频中的对话进行对比，找出区别并改善。
这种“shadow speak”技术不仅可以帮助你记住新词汇，还使你在实际会话中更自信，从而有助于雅思口语练习。如果你坚持使用这种方法，提高英语发音的目标将更容易实现。
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。