跟讀練習: The Demographic Transition Model Explained | Geography | ClickView - 通過影片學習英語口語

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- For most of human history life has been a rather brutal affair.

Both birth rates and death rates were high, making populations relatively stable.

With almost eight billion people alive today, our world is a very different place from what it has ever been.

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.

This theory of population change describe transitions between five stages of development.

Each stage is defined by the relationship between the birth and death rate which in turn influences the rate of growth or decline.

These changes are based on the influences of various social and economic developments.

Let's break these stages down in more detail.

What we know of ancient humans tells us that around one in four infants died before their first birthday.

As many as half of all humans died before puberty.

With such a high mortality rate populations needed high birth rates just to survive.

Demographers refer to this balance as Stage One of the Demographic Transition Model.

Relatively equal rates of births and deaths means the population size is generally stable.

A population pyramid for this stage would have a wide base and a narrow top.

While some regions today could arguably be described as Stage One, most demographers see it as a stage in our past.

For many countries, it began changing during the Industrial Revolution in the late 18th century.

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.

As people gain access to basic levels of healthcare, sanitation, and food security, the death rate falls, especially among children.

Meanwhile, the birth rate remains high.

While Stage One was relatively stable, Stage Two represents a population explosion.

More children survive and have children of their own.

Nations south of the Sahara in Africa, such as South Sudan and Nigeria, are considered to be at Stage Two of the model.

As medicine and technology advance and more children survive, families start having fewer babies.

Expanding populations also experience some significant cultural changes.

There are more educational opportunities, especially for women.

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.

Wealth, power, and innovation also help promote access to and use of contraception.

These factors lead to a period of growth that's slower than before.

Nations such as India, Brazil, and Vietnam are seen as being in this stage.

Populations are still increasing, but at a reduced rate compared to Stage Two.

Over time the reduced birth rate will be matched by a relatively low death rate, and the population will no longer increase or decrease.

Stage Four of the Demographic Transition Model is when low death rates and low birth rates create a stable population.

Most of world's developed nations such as the US, France, Canada, and Australia are at Stage Four.

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.

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.

High costs of living, fear of global catastrophes, and other social pressures could see fewer people choosing to have children.

Smaller populations might seem like a win for the environment, demanding fewer resources and leaving less waste.

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.

Nations, such as Germany and Japan, are already facing this decline.

Other countries such as China might not be far behind.

These nations must consider how to meet the challenges of a shrinking population.

Croatia is another nation that could be seen as experiencing Stage Five.

From the 1950s through the 1970s, 1980s, and to today, Croatia has represented each stage of the Demographic Transition Model.

How countries will develop in the future is a hot topic for discussion.

The Demographic Transition Model is useful but like all models, it has limits.

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.

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音標練習掌握每個音

詞彙學習建立你的詞庫

詞彙遊戲邊玩邊學

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FOR YOU

關於本課

在本課中，學習者將通過觀看人口轉變模型的講解影片，瞭解不同階段的人口變化及其社會經濟影響。學生將練習觀察、理解以及複述影片中的關鍵資訊，旨在提高英語發音和口語能力。通過shadow speech技巧，學習者可以有效提升自己的英語流利度，並在雅思口語練習中表現更佳。

關鍵詞彙與短語

出生率 (birth rate)
死亡率 (death rate)
人口金字塔 (population pyramid)
工業革命 (Industrial Revolution)
醫療保健 (healthcare)
生育率 (fertility rate)
文化變化 (cultural changes)
穩定人口 (stable population)

練習建議

觀看影片的同時，建議開啟音量並仔細聽講者的發音和語調。在練習時，可以嘗試shadowspeak的方式，即在聽到每一句話時，立即複述出來。由於影片講話速度適中，音調清晰，通過shadow speech的方法可以幫助你更好地掌握髮音技巧。

建議將影片暫停，在關鍵句子處停頓並模仿講者的口音和語調，這樣可以有效地提高英語發音的準確性。複述時，注意強調句子的重音部分，從而有助於提升語言表達的自然流暢性。在實現這些步驟時，你會發現自己的英語口語能力，特別是在雅思口語練習中，進步顯著。

最後，定期回顧這些關鍵詞彙，通過不斷重複和使用這些短語，可以進一步鞏固你的學習成果，為將來的語言交流打下堅實的基礎。

影片中的語法

說話人最常用的結構，並附上影片中的原話：

結構	影片中的用法
被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的	is defined · are based · be described
現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事	has been · has ever been · has represented

什麼是跟讀法？

跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。

影子跟讀法: 閱讀完整分步指南 →

跟讀練習: The Demographic Transition Model Explained | Geography | ClickView - 通過影片學習英語口語

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關於本課

關鍵詞彙與短語

練習建議

影片中的語法

什麼是跟讀法？