跟读练习: Sharks 101 | National Geographic - 通过YouTube学习英语口语
C1
(ominous music) - [Narrator] They glide through the water with unmistakable grace, remnants of an ancient past, they dive and they rise from the ocean's murky depths to it's sun-kissed shallows, rousing fear and awe like no other creature in the sea.
41 句
如果句子过短或过长，请点击 Edit 进行调整。
1
(ominous music) - [Narrator] They glide through the water with unmistakable grace, remnants of an ancient past, they dive and they rise from the ocean's murky depths to it's sun-kissed shallows, rousing fear and awe like no other creature in the sea.
2
The world's biggest living fish is a shark.
3
Of the estimated 34,000 species of fish, the largest are whale sharks.
4
These gentle giants usually grow to about 40 feet long and weigh an estimated 15 tons.
5
Their mouths alone can span four feet wide.
6
The gigantic whale shark however, pales in comparison to the largest fish that ever existed, the megalodon.
7
Dating to over 20 million years ago, it's thought that the prehistoric shark could of reached 80 feet long, weighing up to around 70 tons.
8
Unlike whale sharks, the megalodon was carnivorous, and consumed any creature that fit into it's nearly 10 foot wide mouth.
9
Throughout their lives some species of shark can shed over 30,000 teeth.
10
Unlike humans who are born with a set number of teeth in their jaws, sharks have a seemingly limitless supply.
11
They can grow, lose, and replace their teeth as needed.
12
Furthermore, most sharks have multiple rows of teeth in their jaws.
13
The jaws of a great white shark, the largest predatory fish in the sea, can contain up to seven rows that hold up to 300 teeth at any one point.
14
Most sharks, as they hunt their prey, end up losing their teeth individually.
15
However, the cookiecutter shark loses and replaces the teeth in it's lower jaw all at once.
16
Sharks are built for speed.
17
The fastest known shark, the mako shark, can reach speeds of up to 46 miles per hour.
18
This speed is largely due to their body's hydrodynamic design.
19
Many sharks have torpedo shaped heads that allow them to cut through the water with little resistance.
20
Plus, shark skin is covered with flat, v-shaped scales, called dermal denticles.
21
The denticles help water flow smoothly over the skin, which reduces friction and helps sharks swim quickly and quietly.
22
Sharks also have skeletons made of cartilage instead of bone.
23
Cartilage is a much lighter material than bone so sharks have less weight to carry.
24
Sharks may lay eggs, or bear live young.
25
Egg laying sharks only lay a few large eggs.
26
They may come in various forms, such as sacks called mermaid purses or corkscrews.
27
These eggs act as external wombs in which shark embryos complete their development.
28
However, most sharks give birth to live young.
29
Called pups, the young of most live bearing species gestate for around one year.
30
Some even begin practicing their predation skills while in the womb.
31
Before they are born, the sand tiger shark pups compete with their siblings.
32
In fact, the strongest pup in each of the two wombs devours its weaker brothers and sister.
33
Some sharks are at risk of extinction.
34
Every year an estimated 100 million sharks are killed worldwide, in large part for the shark fin trade.
35
The sharks are caught and their dorsal fins are removed and sold at a hefty price, primarily in Asia.
36
In traditional Chinese culture, serving and eating shark fin is a sign of status and wealth.
37
Because of the high demand and value of shark fins, some shark populations have plummeted by up to 70% causing a ripple effect in ecosystems and endangering at least 74 shark species.
38
However, measures are being taken to protect sharks with a number of countries and jurisdictions cracking down on unsustainable shark fishing.
39
In China, shark fin soup is no longer allowed to be served at government banquets.
40
A move hailed by shark conservationists.
41
Through continued international conservation efforts, the loss of sharks may be curbed, allowing the creatures in all their power and grace to survive for many generations to come.
下载应用
AI 为你说出的每个句子打分
TRENDING
热门
关于本课
在本课程中，您将通过观看《鲨鱼101》视频，练习英语听力和口语。您将会了解鲨鱼的多样性、生物特征以及在生态系统中的重要角色。通过模仿视频中的叙述者，您将提高您的发音、语调和流利度。我们将重点使用“shadow speak”（影子演讲）技巧，帮助您更自信地与他人交流。
关键词汇与短语
- 鲨鱼 (shark)
- 鲸鲨 (whale shark)
- 捕食 (predation)
- 牙齿 (teeth)
- 生态系统 (ecosystem)
- 灭绝 (extinction)
- 鱼翅 (shark fin)
- 幼崽 (pup)
练习技巧
为了提高您的英语口语能力，建议您在观看视频时采用“shadow speech”技巧。首先，选择一小段大约10-15秒的视频，仔细聆听叙述者的发音和语调。然后，暂停视频并尝试同时模仿叙述者的声音和语速。注意他们的停顿和重音，这将帮助您掌握自然的表达方式。
由于视频中叙述者的语速较快，您可以先放慢视频速度，直到您感到舒适再逐渐恢复到正常速度。此外，您可以在观看视频时，适当重复关键短语，例如“鲨鱼是海洋中最大的生物”，这将有助于加深对词汇的记忆，并提高您的说话流利度。
最后，尝试将您从视频中学到的内容与他人分享，无论是通过口头交流还是书面表达。通过“看YouTube学英语”，您不仅能增强英语能力，还能更深入地了解鲨鱼这一令人敬畏的生物。
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。