Luyện nói tiếng Anh bằng Shadowing qua video: We Traveled Back in Time. Now Physicists Are Angry.

Chọn chế độ luyện tập

Mỗi chế độ mở một phòng luyện tập toàn màn hình.

147 câu

Nếu các câu quá ngắn hoặc quá dài, hãy bấm Edit để chỉnh sửa.

You're going forward through time, one second every second.

Bạn đang tiến về phía trước theo thời gian, mỗi giây trôi qua một giây.

Congratulations, you're a time traveler.

A bit lame, but let's start here to get to the fun real -time travel to ride on dinosaurs and high -five Einstein.

Time isn't really a thing that passes, but a dimension, a direction you can move in.

We think our universe is four -dimensional, with three spatial and one time dimensions smooshed together into a fancy thing we call space -time.

What you experience as time passing and your life happening is actually you moving through the time dimension.

And this dimension is a bummer.

While you can go forward, backward, left and right, up and down in the space dimensions, in time you can only go forward.

You only get older, never younger.

You can't make detours.

But this is an illusion.

You have far more control over how you move through time.

To explain how this actually works, without making a maths video, we have to make a lot of physicists grumpy,

so please keep in mind that we're simplifying and lying a bit.

Okay, so there's a very strange rule.

Everything in our universe moves at the speed of light through four -dimensional space -time.

Your speed through space -time is the sum of your separate speeds through time and space.

It's impossible for you to stay still.

Even if you're not moving through space dimensions, you're moving through the time dimension, blasting face first into the future.

You can slow down in the time dimension by moving faster through the space dimensions,

but in total, you will always move at the speed of light through space -time.

If you could somehow truly stand still in space, you'd still move through time at the speed of light, and the other way around.

Photons, light particles, move at the speed of light through space.

They don't experience any time passing because their speed in that time dimension is zero.

In the time dimension, they're frozen in place.

If you see light on Earth, from the photon's perspective, it was just on the surface of the sun

and then suddenly crashed into your eye with nothing happening in between.

Remember, we're telling a science story here.

In real life, things are more complicated.

For one, it's impossible to truly stand still relative to space itself.

You can only be standing still relative to other things in space.

And you can't really define a reference frame for photons as we just did.

For details, check out our sources.

But now, back to our story.

Okay, so everything in the universe moves at the same breathtaking speed, but this speed is split between space and time.

Which leads to all sorts of wacky things and where we can see time travel happen.

Real and easy time travel.

When a bus drives past you, it's moving a little bit faster through space than you are.

So, it moves slower through time than you.

Or how it's usually worded, the bus is moving slower through time relative to you.

While this makes things feel like weird physics magic, it's very simple move faster through space,

go slower in time, move slower through space, go faster in time.

And if you had another person moving way faster or slower than you, both end up traveling different distances in the time dimension.

The story that's usually told to demonstrate this is to get twins, force one of them into a rocket against their will,

shoot them through space super fast while the other twin chills on Earth.

And because one twin moves very fast through space while the other moves slowly on Earth, They move at different speeds through time.

When the rocket finally gets home, they're no longer the same age,

and the younger space twin is ready to start years of therapy for being abducted by theoretical physicists.

This is the twin paradox, and it makes perfect sense within the rules of the universe.

If you want to learn more about the paradoxes of time, we made a video about it.

But in a nutshell, you're using time dilation, the fact that your position in time is subjective and only true for yourself.

With sufficiently fast rockets, you could get as far as you want into the future.

Technically, this way you can witness the end of the universe or look at the final thing that will ever happen.

We also made videos about that.

We should mention that there's another way to jump forward in time.

Massive objects bend space -time, causing time to go slower near them.

On Earth, the effect is tiny.

The gravity of our planet makes time pass 0 .00000007 % slower than in deep space,

far from any gravitational fields.

Hardly useful for time travel, but it's a start.

If you move into a really strong gravitational field, like around a black hole, the closer you get to the event horizon,

the slower time passes for you.

If we kidnap our twin again, they won't notice it at all.

Their watch ticks as fast as it always does.

But from the outside, they seem to almost stand still.

Only when the twin leaves the gravitational field and comes back to Earth do they realize they'd time -traveled.

Okay, so you can time travel to the future by going fast or near a black hole.

But this is pretty lame and has literally only downsides except for people who want to sort of teleport into the future.

And it makes building a gigantic human space empire super hard, because even if we develop the technology to go really super fast between stars,

going on a far away journey will always mean leaving your home as you knew it forever.

But now that we know all of this, there's actually a way we could use the rules of our universe to travel backwards through time.

The past is a far away land.

Let's go there.

So you always move through space -time at the speed of light.

If you go fast through the space dimension, you slow down in the time dimension.

And here we find an actual opening for backwards time travel.

The theory of relativity, which may be the most solid scientific theory we know, does not forbid faster -than -light motion through space.

If you move through the space dimension faster than the speed of light, superluminal, you need to move through the time dimension with negative speed.

That means you go backwards through time relative to the rest of the universe, into the past.

Actually, scientists have been looking for superluminal particles and given them a name, tachyons.

They could exist and would have wild properties, like getting faster when they lose energy, and, of course, traveling backwards in time.

Finally, real time travel.

Just like with photons, it isn't really possible to clearly define how time passes for tachyons themselves.

It depends on how you move through space -time relative to them.

But now, for the first time, some observers could actually see tachyons literally traveling backwards in time,

which means they could be used to directly interact with the past.

In theory, you could use them to send messages to your past self

and change all sorts of things that have already happened.

Maybe with some tachyon -powered sci -fi future tech, you could see a star die before it was born,

meet your great -grandparents, prevent your past self from making that one dumb mistake, win the lottery or get eaten by dinosaurs,

and create juicy time paradoxes that also kind of break the universe.

Oh, what's that?

Right.

Hmm.

It seems there are things in our universe that are impossible to mix.

Unfortunately, the theory of relativity specifically forbids anything

that starts out traveling slower than the speed of light to reach the speed of light.

Because moving faster through space requires energy, and the energy required to reach the speed of light is literally infinite.

Even if you could gather all the energy of the universe, you couldn't accelerate a grain of sand to the speed of light.

100

You can get as close as you like, but you can never reach it.

101

It is possible to move at the speed of light as photons do, but they always move at the speed of light.

102

If you move superluminally, you will always move superluminally.

103

And sadly, so far, we don't have the tiniest bit of evidence that tachyons exist.

104

While they work on paper, most scientists think they're not real.

105

So for now, it seems that time travel into the past is strictly impossible, no matter how hard we try.

106

The past is a faraway land, and while we can look at it in pictures and movies and our memories, it's locked away.

107

Forever outside of our reach.

108

While this is sad, it leaves you with the most important time there is.

109

Right now, the moment where you actually exist, and a future that's yours to forge.

110

If you want, you could even time travel to it.

111

Luckily, shaping the future is much easier than trying to change the past.

112

With the right knowledge and problem -solving skills, you'll be ready for whatever obstacles or opportunities lie ahead,

113

which is where our friends at Brilliant come in.

114

Brilliant will make you a better thinker and problem solver, with thousands of interactive bite -sized lessons on just about anything you may be curious about,

115

from physics and maths to technology, data analysis and beyond.

116

You can build real knowledge in just minutes a day, a terrific use of your precious present moments. On Brilliant,

117

you'll learn through discovery by trying things yourself their course on scientific thinking for example gets

118

you hands on with fascinating questions like the ones in this video

119

and since each course is like an immersive workshop you'll gain knowledge of key concepts

120

while building your intuition helping

121

you learn to think like a scientist kurzgesagt has also partnered

122

with brilliant to create a series of lessons to take your

123

scientific knowledge to the next level each one is like a one -on -one version of a Kurzgesagt video,

124

letting you further explore the topics of popular videos like Rabies, Mammalian Metabolism, or Climate Science and Supernovae.

125

And you can get started whenever, wherever, right from whatever device you'd like.

126

To get hands -on with Kurzgesagt lessons and explore everything

127

Brilliant has to offer, from AI and programming to math,

128

science and beyond, start your free 30 -day trial by signing up at brilliant .org slash nutshell.

129

There's even an extra perk for Kurzgesagt viewers.

130

Anyone signing up through our link will get 20 % off an annual membership once their trial ends.

131

We found a way to evade the laws of the universe and go on a truly breathtaking time travel adventure.

132

Are you ready?

133

Well, too bad.

134

Here we go!

135

Look, it's the human era.

136

12 ,000 years of human innovation brought to life.

137

Absolutely incredible how our ancestors laid the foundation for the life we lead today.

138

Let's go back even further and take a look at the timeline of life.

139

Wow, humans are only a tiny blip at this scale.

140

Mammals haven't been around for long either.

141

Here's the age of the dinosaurs.

142

And going further back, we can see where it all began.

143

You can now go on your very own time travel adventure with our Timeline of Human History

144

and Timeline of Complex Life posters.

145

They're expert approved and designed with great love and care.

146

Get them both to get the full time travel effect and to support everything we do on this channel.

147

Tải Ứng Dụng

Mọi thứ bạn cần để nói trôi chảy

Chấm điểm AIChấm từng câu nói

Luyện IPAThành thạo mọi âm

Từ vựngMở rộng vốn từ

Game Từ vựngHọc qua chơi

Quét QR

Download on theApp Store Get it onGoogle Play

Cùng kênh

FOR YOU

Video gợi ý

41 câu

How Einstein changed time forever | Jim Al-Khalili for Big Think

Daily ConversationUniversity StudentsWorking Adults

224 câu

20% Speed of Light!! NEW Light Engine is INSANE!

Daily ConversationUniversity StudentsWorking Adults

370 câu

Are We Living Inside an Alien Control System?

Daily ConversationUniversity StudentsWorking Adults

47 câu

We Found Galaxies Too Old for the Universe

Daily ConversationUniversity StudentsWorking Adults

39 câu

Why Walls STOP Light Waves But Not Radio Waves?

Daily ConversationUniversity StudentsWorking Adults

303 câu

What If you Could See the 4th Dimension?

Daily ConversationUniversity StudentsWorking Adults

560 câu

The Most Dangerous Woman in Science Says We Got the Dinosaur Extinction Totally Wrong

Daily ConversationUniversity StudentsWorking Adults

256 câu

Psychology of Life (And How To Spend It Wisely)

Daily ConversationUniversity StudentsWorking Adults

23 câu

Black Hole Documentary 2019 - Part 1

Daily ConversationUniversity StudentsWorking Adults

552 câu

The Professor Who Taught People How To Think (1962)

Daily ConversationUniversity StudentsWorking Adults

133 câu

Has quantum mechanics proved that reality does not exist?

Daily ConversationUniversity StudentsWorking Adults

445 câu

Từ vựng và ghi chú luyện nói cho bài học này

Bài luyện nói này dựa trên video “We Traveled Back in Time. Now Physicists Are Angry”. Những từ được nhắc lại nhiều nhất trong bài: space, speed, dimension, travel, universe. Video này có 38 câu và 1958 từ để luyện shadowing. Phần lời nói dài 11:03. Người nói nói với tốc độ tự nhiên, khoảng 177 từ mỗi phút, gần với hội thoại hằng ngày. 86% số từ nằm trong 3.000 từ tiếng Anh thông dụng nhất; phần còn lại nên xem trước khi luyện.

Từ vựng quan trọng trong video

15 từ đáng học trong video, kèm phiên âm và nghĩa:

Từ	Phiên âm	Nghĩa
twin danh từ	/twɪn/	trẻ sinh đôi
relative danh từ	/ˈɹɛl.ə.tɪv/	họ hàng, người thân
lesson danh từ	/ˈlɛs.ən/	bài, bài học
rocket danh từ	/ˈɹɑk.ɪt/	động cơ tên lửa, tên lửa
scientist danh từ	/ˈsaɪəntəst/	nhà khoa học, khoa học gia
mathematics danh từ	/mæθ(.ə)ˈmæt.ɪks/	toán học
dinosaur danh từ	/ˈdaɪnəsoɹ/	khủng long
paradox danh từ	/ˈpæ.ɹəˌdɒks/	nghịch lý
adventure danh từ	/ədˈvɛn.t͡ʃə/	phiêu lưu
physics danh từ	/ˈfɪz.ɪks/	vật lý học
explore động từ	/ɪkˈsploɹ/	thám hiểm
leaf danh từ	/lif/	lá
particle danh từ	/ˈpɑɹtək(ə)l/	hạt
forbid động từ	/fɚˈbɪd/	cấm, cấm chỉ
topic danh từ	/ˈtɑpɪk/	chủ đề

Cụm động từ bạn sẽ nghe

Từ	Nghĩa
check out động từ	tính tiền, trả phòng
go back động từ	trở lại

Những câu đáng luyện lại

Các câu ngắn, trọn ý trong video mà bạn có thể dùng lại khi giao tiếp hằng ngày:

You’re going forward through time one second every second.
Congratulations, you’re a time traveler!
It's impossible for you to stay still.

Ngữ pháp trong video

Những cấu trúc người nói dùng nhiều nhất, kèm đúng cụm từ trong video:

Cấu trúc	Trong video
Câu điều kiện if + mệnh đề, will/would + động từ — điều kiện và kết quả	If you move superluminally, you will always
Thì hiện tại hoàn thành have/has + quá khứ phân từ — việc đã xảy ra nhưng còn liên quan đến hiện tại	have already happened · has also partnered · haven't been
Câu bị động be + quá khứ phân từ — nhấn vào việc xảy ra, không phải người làm	is split · being abducted · was born

Phát âm cần chú ý

Người nói dùng 16 dạng rút gọn, ví dụ you'll, can't, don't. Hãy nói theo dạng ngắn đúng như bạn nghe.

Âm “th”: mathematics /mæθ(.ə)ˈmæt.ɪks/, breathtaking /ˈbɹɛθˌteɪ.kɪŋ/, gather /ˈɡæðɚ/, theoretical /ˌθi.əˈɹɛt.ɪ.kəl/, thinker /ˈθɪŋ.kɚ/
Âm “sh” và “zh”: dimension /daɪˈmɛn.ʃən/, dimensional /daɪˈmɛn.ʃə.nəl/, innovation /ˌɪn.əˈveɪ.ʃən/, workshop /ˈwɝk.ʃɑp/, illusion /ɪˈl(j)uːʒ(ə)n/
Từ dài — đặt trọng âm cho đúng: mathematics /mæθ(.ə)ˈmæt.ɪks/, dimensional /daɪˈmɛn.ʃə.nəl/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/, innovation /ˌɪn.əˈveɪ.ʃən/, interactive /ˌɪn.tɚˈæk.tɪv/

Những âm người Việt thường gặp khó:

Cụm phụ âm cuối — đọc đủ từng âm, đừng nuốt âm cuối: scientist /ˈsaɪəntəst/, mathematics /mæθ(.ə)ˈmæt.ɪks/, paradox /ˈpæ.ɹəˌdɒks/, physics /ˈfɪz.ɪks/, sand /sænd/
Âm /tʃ/, /dʒ/ và /ʒ/ — tiếng Việt không có, đừng đọc thành “ch” hay “gi”: adventure /ədˈvɛn.t͡ʃə/, chill /tʃɪl/, illusion /ɪˈl(j)uːʒ(ə)n/, subjective /səbˈd͡ʒɛktɪv/, forge /fɔɹd͡ʒ/
Âm /æ/ — mở miệng rộng hơn âm “e”: backward /ˈbækwɚd/, mathematics /mæθ(.ə)ˈmæt.ɪks/, paradox /ˈpæ.ɹəˌdɒks/, sand /sænd/, fancy /ˈfæn.si/

Cách luyện với video này

Nghe hết video một lần, chưa cần nói, và ghi lại những từ bạn chưa biết.
Bắt đầu ở tốc độ 0,75×, nói đuổi từng câu, rồi quay lại tốc độ bình thường khi đã quen.
Ghi âm giọng mình rồi so với bản gốc, chú ý các từ như twin, relative, lesson.

Phương Pháp Shadowing Là Gì?

Shadowing là kỹ thuật học ngôn ngữ có cơ sở khoa học, ban đầu được phát triển cho chương trình đào tạo phiên dịch viên chuyên nghiệp và được phổ biến rộng rãi bởi nhà đa ngôn ngữ học Dr. Alexander Arguelles. Nguyên lý cốt lõi đơn giản nhưng cực kỳ hiệu quả: bạn nghe tiếng Anh của người bản xứ và lặp lại to ngay lập tức — như một "cái bóng" (shadow) đuổi theo người nói với độ trễ chỉ 1–2 giây. Khác với luyện ngữ pháp hay học từ vựng bị động, Shadowing buộc não bộ và cơ miệng phải đồng thời xử lý và tái tạo ngôn ngữ thực tế. Các nghiên cứu khoa học xác nhận phương pháp này cải thiện đáng kể phát âm, ngữ điệu, nhịp điệu, nối âm, kỹ năng nghe và độ lưu loát khi nói — đặc biệt hiệu quả cho người luyện IELTS Speaking và muốn giao tiếp tiếng Anh tự nhiên như người bản ngữ.

Phương pháp shadowing: đọc hướng dẫn từng bước đầy đủ →

Luyện nói tiếng Anh bằng Shadowing qua video: We Traveled Back in Time. Now Physicists Are Angry.

Chọn chế độ luyện tập

Tải Ứng Dụng

Queen Ant Clones Another Species

Could Humans Evolve Flight?

How Caffeine Works

You Will Only Like Half of This Video

Would You Upload Your Mind?

Your Brain on Magic Mushrooms

Why Ebola Keeps Coming Back

We Made A New Channel!

3 Reasons Why Nuclear Energy Is Awesome! 3/3

What Falling in Love Does to You

YOU Own the Moon. And Mars. And Venus.

What Is Life? Is Death Real?

How Antidepressants Work

Your Brain Peaked at Birth

We Won’t Explore the Galaxy...

Dozens of Nukes Are Missing. Why? HOW?

Something Travels Faster than Light

How to Destroy a Black Hole

Why Beautiful Things Make us Happy – Beauty Explained

What If You Never Slept?

How Einstein changed time forever | Jim Al-Khalili for Big Think

20% Speed of Light!! NEW Light Engine is INSANE!

Are We Living Inside an Alien Control System?

We Found Galaxies Too Old for the Universe

Why Walls STOP Light Waves But Not Radio Waves?

What If you Could See the 4th Dimension?

The Most Dangerous Woman in Science Says We Got the Dinosaur Extinction Totally Wrong

Psychology of Life (And How To Spend It Wisely)

Black Hole Documentary 2019 - Part 1

The Professor Who Taught People How To Think (1962)

Has quantum mechanics proved that reality does not exist?

Why is there antimatter?

Từ vựng và ghi chú luyện nói cho bài học này

Từ vựng quan trọng trong video

Cụm động từ bạn sẽ nghe

Những câu đáng luyện lại

Ngữ pháp trong video

Phát âm cần chú ý

Cách luyện với video này

Phương Pháp Shadowing Là Gì?