シャドーイング練習: The Demographic Transition Model Explained | Geography | ClickView - YouTubeで英語スピーキングを学ぶ
C1
シャドーイング コントロール
0% 完了 (0/48 文)
- [Narrator] For most of human history life has been a rather brutal affair.
⏸ 一時停止中
再生速度:
リピート回数:
待機モード:
字幕同期:0ms
アプリをダウンロード
話したすべての文をAIが採点
すべての文48 文
1
- [Narrator] For most of human history life has been a rather brutal affair.
2
Both birth rates and death rates were high, making populations relatively stable.
3
With almost eight billion people alive today, our world is a very different place from what it has ever been.
4
To understand the complex relationship between changes in a population as a nation develops over time, demographers can use what's called the Demographic Transition Model.
5
This theory of population change describe transitions between five stages of development.
6
Each stage is defined by the relationship between the birth and death rate which in turn influences the rate of growth or decline.
7
These changes are based on the influences of various social and economic developments.
8
Let's break these stages down in more detail.
9
What we know of ancient humans tells us that around one in four infants died before their first birthday.
10
As many as half of all humans died before puberty.
11
With such a high mortality rate populations needed high birth rates just to survive.
12
Demographers refer to this balance as Stage One of the Demographic Transition Model.
13
Relatively equal rates of births and deaths means the population size is generally stable.
14
A population pyramid for this stage would have a wide base and a narrow top.
15
While some regions today could arguably be described as Stage One, most demographers see it as a stage in our past.
16
For many countries, it began changing during the Industrial Revolution in the late 18th century.
17
Thanks to centuries of science, know a lot about how to keep food and water germ free, how to keep wounds from becoming infected, and how to vaccinate against many diseases.
18
As people gain access to basic levels of healthcare, sanitation, and food security, the death rate falls, especially among children.
19
Meanwhile, the birth rate remains high.
20
While Stage One was relatively stable, Stage Two represents a population explosion.
21
More children survive and have children of their own.
22
Nations south of the Sahara in Africa, such as South Sudan and Nigeria, are considered to be at Stage Two of the model.
23
As medicine and technology advance and more children survive, families start having fewer babies.
24
Expanding populations also experience some significant cultural changes.
25
There are more educational opportunities, especially for women.
26
Better education leads to higher employment rates, meaning women have options other than being full-time mothers, including having a stronger say in how a community is run.
27
Wealth, power, and innovation also help promote access to and use of contraception.
28
These factors lead to a period of growth that's slower than before.
29
Nations such as India, Brazil, and Vietnam are seen as being in this stage.
30
Populations are still increasing, but at a reduced rate compared to Stage Two.
31
Over time the reduced birth rate will be matched by a relatively low death rate, and the population will no longer increase or decrease.
32
Stage Four of the Demographic Transition Model is when low death rates and low birth rates create a stable population.
33
Most of world's developed nations such as the US, France, Canada, and Australia are at Stage Four.
34
When birth rates remain below the approximate 2.1 children per woman that is necessary for keeping even the healthiest population stable, the number of people declines.
35
If current predictions hold, a number of nations could soon join Japan and Germany in the fifth and final stage of the Demographic Transition Model.
36
High costs of living, fear of global catastrophes, and other social pressures could see fewer people choosing to have children.
37
Smaller populations might seem like a win for the environment, demanding fewer resources and leaving less waste.
38
But the pressures on the economy will increase in the short term, as there are fewer young people to care for a slowly aging population.
39
Nations, such as Germany and Japan, are already facing this decline.
40
Other countries such as China might not be far behind.
41
These nations must consider how to meet the challenges of a shrinking population.
42
Croatia is another nation that could be seen as experiencing Stage Five.
43
From the 1950s through the 1970s, 1980s, and to today, Croatia has represented each stage of the Demographic Transition Model.
44
How countries will develop in the future is a hot topic for discussion.
45
The Demographic Transition Model is useful but like all models, it has limits.
46
From the devastation of wars and pandemics to surprises delivered by economic booms and new form of economics, anything could affect the population of Earth in the near and distant future.
47
If you liked this video you can find it and so many more at clickview.net.
48
Sign up for free today!
TRENDING
人気動画
App StoreとGoogle Playで4.9/5
Shadowing English
モバイル版
Shadowing Englishアプリでいつでもどこでも英語を学びましょう。 今すぐコミュニケーションスキルを向上させましょう！
学習の進捗を追跡する
AIによる採点とエラー修正
豊富な動画ライブラリ
なぜこのビデオで話す練習をするのか？
このビデオは、「人口転換モデル」について解説しており、さまざまな国の成長段階を示しています。このような地理的および社会的なテーマは、英語のスピーキングスキルを向上させる優れた文脈を提供します。特に、実際の歴史や現在の問題に基づいた話題は学習者にとって興味深く、より深い会話を促進します。ビデオを通じて、英語シャドーイングや影響力ある表現を使って話すことで、リスニングとスピーキングの両方のスキルが強化されます。
文法と文脈における表現
このビデオでの主要な文法構造と表現を分析すると、以下のポイントが挙げられます：
- 過去形の使用：「多くの人が幼少期に亡くなった」など、過去の出来事を説明するために過去形が多用されています。
- 条件文：「もし現在の予測が当たるならば…」のように、条件文を使用して将来の可能性について話す表現があります。
- 分詞構文：「医療と技術が進歩するにつれて…」という表現は、時間の経過を示すのに効果的です。
これらの文法構造は、英語の会話における流暢さを向上させるために重要です。ビデオを見ながら、これらの表現を自分の言葉で使ってみることが効果的です。特に、英語シャドーイングをすることで、スピーキング力が飛躍的に向上します。
共通の発音トラップ
このビデオの中で、特に発音に注意が必要な単語やフレーズがあります。例えば：
- 「デモグラフィック」 - この言葉は発音が複雑であり、正確に発音するためには何度も練習が必要です。
- 「トランジションモデル」 - このフレーズでは、スムーズに連結させることが求められるため、言葉のリズムに注意しましょう。
- 「経済的な発展」 - 日本語で習った発音とは異なる英語の音に注意が必要です。
これらのトラップを克服するためには、シャドースピーク（shadow speak）や影のスピーチ（shadow speech）を活用して反復練習を行うことが重要です。スムーズに発音できるようになるまで、何度も繰り返して練習しましょう。
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。