跟读练习: What is a Black Hole? - 通过视频学习英语口语
正在创建课程...
1
Space place in a snap.
2
What is a black hole?
3
Space is a pretty dark place.
4
Even so, some areas are darker than others.
5
Nothing is darker than a black hole.
6
A black hole is an area of such immense gravity that nothing, not even light, can escape from it.
7
Black holes form at the end of some stars' lives.
8
The energy that held the star together disappears and it collapses in on itself, producing a magnificent explosion.
9
Here's where things get crazy.
10
All of that material left over from the explosion, many times the mass of our sun, falls into an infinitely small point.
11
Black holes can form in many ways, though.
12
And large black holes can have tens, two millions of times the mass of our sun trapped in a point smaller than the tip of a pin.
13
Some black holes trap more and more material as their mass increases.
14
The point where all that mass is trapped is called a singularity.
15
It may be infinitely small, but its influence is enormous.
16
Imagine a circle with a singularity in the middle.
17
The gravity on the inside of the circle is so strong that nothing can escape.
18
It sucks in everything, even light.
19
That's why it's black.
20
This circle is known as the event horizon.
21
An event horizon is probably what you are thinking of when you think of a black hole.
22
What would happen, you might wonder, If we took a spacecraft near a black hole's event horizon, the answer?
23
Spaghettification.
24
That's the technical term at least.
25
As our spacecraft approaches, the gravity will be
26
so much stronger on the side closer to the black hole than at the other side
27
that it will get completely stretched out like a piece of spaghetti.
28
Try as you may.
29
You would be hard -pressed to find anything weirder or cooler than a black hole.
30
Presented by NASA SpacePlace.
31
For a transcript of this video and a fun downloadable poster, visit the space place.
📺 同频道
✨ 推荐视频
C16
74 句
Black Holes Explained – From Birth to Death
IELTS PrepTOEFL PrepUniversity Students
B114 句
Let’s go! Pluto
IELTS PrepTOEFL PrepHigh School Students
B19
15 句
Gravitational Force
IELTS PrepTOEFL PrepHigh School Students
B11
230 句
What It's Like To Fight The Deadliest Spiders (Part 1)
TeensHigh School StudentsUniversity Students
B11
20 句
The Ocean
TOEFL PrepHigh School StudentsUniversity Students
B14
43 句
How Does Food Get Delivered to Space? | Space Week | Channel 4
TOEFL PrepUniversity Students
B22
143 句
Saturn Is The Scariest Planet In Our Solar System
IELTS PrepTOEFL PrepUniversity Students
B25
2 句
Doctor Who - Blink - Big ball of wibbly wobbly... time-y wimey... stuff.
High School StudentsUniversity Students
B11
104 句
B1 Story — Space Adventure | 7-Minute English
Daily ConversationHigh School StudentsUniversity Students
A22
31 句
Universe Size Comparison 3D
High School StudentsUniversity Students
C16
73 句
Superfluid Dark Matter
IELTS PrepTOEFL PrepUniversity Students
B22
246 句
You Are Alive to Watch the Space Station Fall From the Sky
IELTS PrepTOEFL PrepUniversity Students
本课的词汇与口语要点
这段视频共有 31 个句子、333 个单词可供跟读。 讲话部分时长为 2:58。 说话人语速平稳，每分钟约 112 个词，很适合跟读。 只有 81% 的单词属于英语最常用的 3,000 词，词汇难度较高。
视频中的重点词汇
视频中 14 个值得学习的单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| trap 名词 | /tɹæp/ | 陷阱, 圈套 |
| horizon 名词 | /həˈɹaɪ.zən/ | 地平線 /地平线, 天際 /天际 |
| explosion 名词 | /ɛkˈsploʊ.ʒən/ | 爆炸, 爆發 /爆发 |
| spacecraft 名词 | /ˈspeɪsˌkɹæft/ | 航天器 |
| suck 动词 | /sʌk/ | 吸吮, 咂 |
| stretch 动词 | /stɹɛt͡ʃ/ | 伸展, 拉 |
| enormous 形容词 | /ɪˈnɔː.məs/ | 巨大的 |
| poster 名词 | /ˈpoʊstɚ/ | 招貼 /招贴 |
| collapse 动词 | /kəˈlæps/ | 倒坍, 崩潰 /崩溃 |
| disappear 动词 | /dɪsəˈpɪɹ/ | 消失 |
| magnificent 形容词 | /mæɡˈnɪfəsənt/ | 壯麗 /壮丽, 堂皇 |
| immense 形容词 | /ɪˈmɛns/ | 廣大 /广大, 巨大 |
| transcript 名词 | /ˈtɹæn.skɹɪpt/ | 副本, 抄本 |
| spaghettification 名词 | /spəˌɡɛtəfəˈkeɪʃən/ | 麵條化 /面条化, 麪條化 /面条化 |
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 |
|---|---|
| 被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的 | is trapped · is known |
| 比较级 -er than / more … than — 比较两个事物 | darker than · smaller than · cooler than |
| 用 “might / may” 表可能 might/may + 动词 — 有可能但不确定的事 | may be · might wonder |
| “will” 表将来 will + 动词 — 决定、承诺或预测 | will be · will get |
需要注意的发音
- “sh” 和 “zh” 音: explosion /ɛkˈsploʊ.ʒən/, spaghettification /spəˌɡɛtəfəˈkeɪʃən/
- 长单词——注意重音位置: infinitely /ˈɪnfɪnɪtli/, magnificent /mæɡˈnɪfəsənt/, singularity /ˌsɪŋɡjəˈlæɹətɪ/, spaghettification /spəˌɡɛtəfəˈkeɪʃən/
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。
- 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
- 录下自己的声音并与原声对比，特别注意 trap, horizon, explosion 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。