シャドーイング練習: I10T4S4 - Nanotechnology - 動画で英語スピーキングを学ぶ

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Today we’re going to look at an important area of science, namely nanotechnology.

So what is it?

Nano means tiny, so it’s science and engineering on the scale of atoms and molecules.

The idea is that by controlling and rearranging atoms, you can literally create anything.

However, as we’ll see, the science of the small has some big implications affecting us in many ways.

There’s no doubt that nanotechnology promises so much for civilisation.

However, all new technologies have their teething problems.

And with nanotechnology, society often gets the wrong idea about its capabilities.

Numerous science-fiction books and movies have raised people's fears about nanotechnology - with scenarios such as inserting little nano-robots into your body that monitor everything you do without you realising it, or self-replicating nano-robots that eventually take over the world.

So how do we safeguard such a potentially powerful technology?

Some scientists recommend that nano-particles be treated as new chemicals with separate safety tests and clear labelling.

They believe that greater care should also be taken with nano-particles in laboratories and factories.

Others have called for a withdrawal of new nano products such as cosmetics and a temporary halt to many kinds of nanotech research.

But as far as I’m concerned there's a need to plough ahead with the discoveries and applications of nanotechnology.

I really believe that most scientists would welcome a way to guard against unethical uses of such technology.

We can’t go around thinking that all innovation is bad, all advancement is bad.

As with the debate about any new technology, it is how you use it that’s important.

So let’s look at some of its possible uses.

Thanks to nanotechnology, there could be a major breakthrough in the field of transportationwith the production of more durable metals.

These could be virtually unbreakable, lighter and much more pliable leading to planes that are 50 times lighter than at present.

Those same improved capabilities will dramatically reduce the cost of travelling into space making it more accessible to ordinary people and opening up a totally new holiday destination.

In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes.

We need nanotechnology in order to create a new generation of computers that will work even faster and will have a million times more memory but will be about the size of a sugar cube.

Nanotechnology could also revolutionise the way that we generate power.

The cost of solar cells will be drastically reduced so harnessing this energy will be far more economical than at present.

But nanotechnology has much wider applications than this and could have an enormous impact on our environment.

For instance, tiny airborne nano-robots could be programmed to actually rebuild the ozone layer, which could lessen the impact of global warming on our planet.

That’s a pretty amazing thought, isn’t it?

On a more local scale, this new technology could help with the clean-up of environmental disasters as nanotechnology will allow us to remove oil and other contaminants from the water far more effectively.

And, if nanotechnology progresses as expected - as a sort of building block set of about 90 atoms - then you could build anything you wanted from the bottom up.

In terms of production, this means that you only use what you need and so there wouldn't be any waste.

The notion that you could create anything at all has major implications for our health.

It means that we’ll eventually be able to replicate anything.

This would have a phenomenal effect on our society.

In time it could even lead to the eradication of famine through the introduction of machines that produce food to feed the hungry.

But it’s in the area of medicine that nanotechnology may have its biggest impact.

How we detect disease will change as tiny biosensors are developed to analyse tests in minutes rather than days.

There’s even speculation nano-robots could be used to slow the ageing process, lengthening life expectancy.

As you can see, I’m very excited by the implications that could be available to us in the next few decades.

Just how long it’ll take, I honestly don't know.

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このレッスンの語彙とスピーキングのポイント

この動画には、シャドーイング用の文が40文、単語が699語あります。音声の長さは5:28です。話す速さは1分あたり約128語で安定しており、シャドーイングしやすいペースです。英語の頻出3,000語に含まれる単語は81%だけなので、語彙は難しめです。

この動画の重要語彙

動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。

単語	発音	意味
robot 名詞	/ˈɹoʊ.bɑt/	ロボット, 人造人間
atom 名詞	/ˈætəm/	原子, アトム
hungry 形容詞	/ˈhʌŋ.ɡɹi/	空腹な, 飢えた
scientist 名詞	/ˈsaɪəntəst/	科学者
capability 名詞	/ˌkeɪ.pəˈbɪl.ɪ.ti/	能力
particle 名詞	/ˈpɑɹtək(ə)l/	粒子
temporary 形容詞	/ˈtɛmp(əˌɹ)ɛɹi/	暫くの, 暫時の
discovery 名詞	/dɪˈskʌv.ɹi/	発見
fiction 名詞	/ˈfɪkʃən/	フィクション, 小説
label 名詞	/ˈleɪ.bəl/	荷札, 貼り札
ordinary 形容詞	/ˈɔɹdɪnɛɹi/	通常な, 普通な
layer 名詞	/ˈleɪ̯ɚ/	層, 膜
disaster 名詞	/dɪˈzɑːs.təː/	災害, 天災
monitor 名詞	/ˈmɑ.nɪ.tɚ/	モニター
innovation 名詞	/ˌɪn.əˈveɪ.ʃən/	イノベーション, 革新

動画に出てくる句動詞

単語	意味
take over 動詞	引き受ける

この動画の文法

話し手がよく使っている文型を、動画の実際の表現とともに紹介します。

文型	動画での表現
受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる	be treated · be taken · could be programmed
現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している	have raised · have called

注意したい発音

話し手はI'm, we'll, can'tなど、短縮形や弱形を10回使っています。聞こえたとおりの短い形で発音しましょう。

「th」の音: withdrawal /wɪðˈdɹɔ(ə)l/, breakthrough /ˈbɹeɪk.θɹuː/, lengthen /ˈlɛŋθən/, teethe /tiːð/, unethical /ʌnˈɛθɪkəl/
「sh」と「zh」の音: implication /ˌɪmpləˈkeɪʃən/, fiction /ˈfɪkʃən/, potentially /pəˈtɛnʃ(ə)li/, innovation /ˌɪn.əˈveɪ.ʃən/, destination /dɛstɪˈneɪʃən/
長い単語（アクセントの位置に注意）: implication /ˌɪmpləˈkeɪʃən/, capability /ˌkeɪ.pəˈbɪl.ɪ.ti/, temporary /ˈtɛmp(əˌɹ)ɛɹi/, ordinary /ˈɔɹdɪnɛɹi/, potentially /pəˈtɛnʃ(ə)li/

この動画での練習方法

まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
通常の速度で一文ずつシャドーイングし、話し手のリズムに合うまで繰り返します。
自分の声を録音して元の音声と比べます。robot, atom, hungryなどの単語に特に注意しましょう。

シャドーイングとは？英語上達に効果的な理由

シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。

シャドーイングのやり方: ステップ別の完全ガイドを読む →

シャドーイング練習: I10T4S4 - Nanotechnology - 動画で英語スピーキングを学ぶ

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