跟读练习: Amphibians for Kids | What is an amphibian? Learn the characteristics of amphibians - 通过YouTube学习英语口语
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Amphibians!
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Amphibians!
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Have you ever sorted some of your things into different groups?
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Maybe you sort clothes by color or style,
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or your video games by category.
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Scientists do the same thing with animals and other objects.
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All animals, including humans, have a few things in common.
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They are living organisms.
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They need food and energy to survive, move, and grow.
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And they create more of their own,
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which means they have babies.
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Though they have a lot in common,
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there are also many differences between animals.
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When you see an insect like a mosquito or a butterfly,
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you know that it's different than a fish.
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You also know that a cougar is different from a snake.
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Because of these differences, all animals are classified or separated into special groups.
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Some of these special groups include mammals, or animals with hair.
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Reptiles or creatures that have dry,
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scaly skin, birds who have feathers and wings,
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and fish that have gills and live in the water.
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Some other groups that animals are classified in include warm-blooded,
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cold-blooded, vertebrate, invertebrates, and living on land versus living in water.
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Humans live on land.
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Even though you can swim,
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take a shower, and jump into the ocean,
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you cannot live and survive in the water because you need oxygen to breathe.
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You can only survive on land.
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Fish are the opposite.
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They cannot live on the land like you.
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They can only survive in the water.
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But did you know that there is one group of animals that can live both on land and in water?
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This group is called amphibians.
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In fact, the Greek word for amphibian means double life or two lives.
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There are about 7,000 species of amphibians living in the world today that can survive in the water and on land.
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You are probably familiar with some of these amphibians.
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Can you think of some amphibians that you might recognize?
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Here's a hint.
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Think of some animals that are green and often slimy.
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Ewww!
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Did you think of toads, salamanders, newts, or frogs?
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If you did, you were right!
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They are amphibians.
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You probably already know some things about frogs and toads,
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but did you know that there are many different types of both?
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Have you heard of the American bullfrog or the poison dart frog?
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What about the American toad or the tomato toad?
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Did you know that there are around 2,000 different species of toads and frogs in our world?
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Kind of makes you wonder where they're all hiding.
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Sometimes it's easy to mix up a frog and a toad.
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Here's how you can tell them apart.
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As adults, frogs have smooth,
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moist skin, and longer legs than toads.
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While, toads have dry bumpy skin and short legs because they walk more often than they jump.
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Although toads and frogs are different,
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they are both amphibians because they have some things in common.
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So, what makes an animal fit into the amphibian category?
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Well, it's simple.
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They each have characteristics that are the same, like webbed feet.
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They also have backbones called vertebrates,
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just like you do, but their backbones are much smaller than humans.
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Every group of animals have certain characteristics in common.
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Some of those characteristics are included in other groups too,
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like humans and amphibians both having vertebrates or backbones.
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However, because humans are warm-blooded and amphibians are cold-blooded,
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they cannot be in the same group even though they do share something in common.
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Cold-blooded means that an amphibian's body temperature changes.
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If it's 60 degrees in the air or the water where they are living,
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then their bodies adapt and also become 60 degrees.
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If it's 40 degrees, then they adapt to that temperature too.
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That's different than being warm-blooded.
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Humans are warm-blooded.
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That means that no matter what the temperature is outside,
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inside our bodies, the temperature always stays the same, or 98.6 degrees.
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The only time it changes is when we are sick and our temperature goes a little up or down.
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Another trait of the amphibian group is that part of their life is spent on land,
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while the other part is spent in the water.
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They can breathe using gills while in the water, just like a fish.
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However, unlike a fish, they later grow lungs and legs which help them live live on land.
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Kinda cool!
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Another thing that sets amphibians apart is their skin.
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This is where the slimy part comes in.
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Eww!
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While slimy might seem gross to us,
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it's a very important part of being an amphibian.
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Adult amphibians must stay near the water to keep their skin wet.
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An interesting fact about amphibians is they don't drink their water.
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actually absorbed through their skin.
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And did you know that frogs can't live in salt water?
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The salt could possibly poison their insides as well as dehydrate them since their skin needs to stay moist.
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All amphibians come from soft eggs that kind of look like jelly.
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They go through a process called metamorphosis,
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which basically means they morph or change into something else as time passes.
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When amphibians are newly born,
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they look like fish with tails and gills.
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After a little while, they become tadpoles with two legs.
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The tadpoles change again and develop two more legs as well as a tail.
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They look like a small version of a frog, only with a tail.
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Finally, they become a full-grown frog.
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Though all amphibians have common characteristics,
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frogs and toads lose their tails when they reach adulthood,
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while salamanders and newts keep their tails when they become adults.
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Salamanders and newts look like lizards without scales.
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A cool fact about newts and salamander is,
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if they lose a limb,
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it will regenerate, which means it will grow back!
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Now that's pretty amazing!
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Another species of amphibian is called a caecilian.
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Caecilians do not have arms or legs.
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They use their pointed noses and strong skulls to burrow through mud.
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They look like worms or snakes,
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maybe even a bit scarier,
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especially since some of them grow to be over four feet long.
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Amphibians live in a wide range of habitats.
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They can be found in or around streams,
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forests, meadows, ponds, lakes, swamps,
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and other damp or wet areas.
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Their diet includes spiders, beetles, and worms.
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Some frogs have a long, sticky tongue.
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They flick to catch flies, moths, and other insects.
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Amphibians come in all sizes, too.
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The Goliath Frog can grow to be 15 inches long and weigh 8 pounds!
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That's as big as my cat!
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While the smallest frog in the world is only about a third of an inch long.
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That's about as wide as your pinky finger.
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On the other hand, the Chinese Giant Salamander can be 6 feet long and weigh 140 pounds!
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Can you imagine seeing that in a swamp?
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Amphibians are interesting animals with some neat facts.
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Did you know that some salamanders keep their gills and that frogs swallow their food whole?
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There's much more that can be learned about these fascinating animals.
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So don't stop here.
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The next time you are near some water,
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see if you can spot some of these incredible creatures we call amphibians.
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Thanks for following Clarendon Learning.
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For more free resources, check us out at clarendonlearning.org.
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背景与语境
在这段视频中，讲述者向儿童介绍了两栖动物的基本特征。通过将动物分为不同的类别，讲述者帮助孩子们理解生物的共同点与差异，比如生存环境和生理结构。这个视频适合任何年龄段的英语学习者，尤其是那些希望通过对话增强英语口语能力的学习者。通过了解两栖动物的有趣知识，学习者不仅可以丰富他们的词汇，也能提高英语发音，从而在雅思口语练习中脱颖而出。
日常沟通的五个常用短语
- Amphibians! (两栖动物！)
- Different groups (不同的群体)
- Living organisms (生物体)
- Survive, move, and grow (生存、移动和成长)
- Classified or separated (分类或分开)
逐步跟读指南
对于希望通过跟读提高英语口语的学习者，以下是一个逐步的 shadow speak 指南，帮助你掌握视频中的内容：
- 听懂关键词：首先，仔细听视频，确保理解重要的关键词，例如“amphibians”和“classified”。写下这些单词，有助于巩固记忆。
- 模仿发音：选择视频中的一小段，反复听，尝试模仿讲述者的发音与语调，即使是很短的句子，这样可以提高你的英语发音。
- 角色扮演：与学习伙伴一起，分别扮演讲述者与提问者的角色，进行对话练习，这样可以调动更多的语言感知，提升口语流利度。
- 记录与反思：用手机录音自己跟读的过程，事后听回，检视发音与流畅度，找出需要改进的地方。
- 定期练习：频繁地进行这种练习，以确保ln英语口语练习中不断进步，提升自信心。
通过这样的练习，不仅能提升学员的口语能力，还能在雅思口语考试中表现出色。
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。