Prática de Shadowing: RE3 Unit 7A - Aprenda a falar inglês com vídeo
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Track 13, Reading 7a Powering the Planet Despite modern society's heavy dependence on fossil fuels for energy,
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most people are aware that the supply of these fuels is finite.
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As oil and other fossil fuels become more costly and difficult to find, researchers are looking at alternative energy sources,
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including solar, wind, and even nuclear power.
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But which substitute, if any, is the right one?
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Solar.
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Solar panels catch energy directly from the sun and convert it into electricity.
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One of the world's largest solar power stations is in the Indian state of Tamil Nadu,
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where more than 2 .5 million solar panels have the capacity to generate enough power for 750 ,000 people.
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But unlike the burning of fossil fuels, the process used to create all that solar energy produces no emissions.
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Today, however, solar power provides less than 2 % of the world's energy,
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primarily because the cost of the panels is still very high.
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But price is only one issue.
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Clouds and darkness also cause solar panels to produce less energy.
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This requires that additional power sources, such as batteries, be available.
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Some scientists think the solution to this problem can be found in space, which is the ideal place to gather energy from the sun.
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With no clouds and no night time, a space -based solar power station could operate constantly.
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These stations would send the power back to Earth, which could then be turned into electricity for consumption.
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Advocates of solar space stations say this technology would initially require a lot of money, but eventually, it could provide continuous,
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clean energy that would be cheaper than other fuels.
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Also, unlike other energy sources, solar power from space would last as long as the sun shines,
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and would guarantee everyone on Earth all the energy they need.
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Wind Wind, the fastest -growing alternative energy source, is another way of collecting energy from the sun.
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Wind is caused by the sun's heat rather than its light.
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Therefore, unlike solar power, wind power works well even on cloudy days.
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All over the world, incentives designed to decrease the dependence on oil and coal have led to a steep increase in wind -powered energy.
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Today, Asia leads the world in wind power, producing around 230 ,000 megawatts,
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the equivalent of 230 large coal -powered plants.
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Europe produces nearly 180 ,000 megawatts.
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North America remains a distant third at 105 ,000.
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Despite its successes, some people are protesting wind power development, saying the turbines are both noisy and ugly.
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Just outside England's Lake District, a protected national park, a dozen existing wind towers are due to be removed.
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This is a high -quality landscape, says one local homeowner.
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They shouldn't be putting those things in here.
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There are other challenges, too.
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If the wind doesn't blow, the turbines are not able to produce adequate energy.
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As a result, other power sources are needed.
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In contrast, a strong wind can create too much power.
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In cases like this, the energy company must sell the extra power at a much reduced rate, which is not good for business.
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What's needed for both wind and solar is a way to store a large energy surplus.
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However, most systems are still decades away from making this a reality.
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On the plus side, both wind and solar power enable people to generate their own energy where they live.
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People can have their own windmills or solar panels with batteries for calm days.
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Nuclear In the 1970s, nuclear power was seen as the main energy alternative.
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Nuclear power produces vast amounts of electricity more cheaply than gas or coal with no carbon emissions.
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For a number of years in the 1980s and 90s, however, use of nuclear power declined due to accidents,
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concerns about nuclear waste storage and disposal, and high construction costs.
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Today, times are changing.
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Worldwide, about 450 plants generate 11 % of the planet's electric power,
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and some countries have invested heavily in nuclear energy.
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France, for instance, gets three -quarters of its electricity from nuclear power, the highest percentage of any country.
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China has started to build one or two new plants a year, and India has also begun to utilize nuclear energy on a
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large scale however there are still concerns about the safety of
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nuclear power as seen for example at the fukushima nuclear power
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plant in japan the country had to close the nuclear reactors at fukushima
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when the plant was hit by a tsunami
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and as a consequence began releasing substantial amounts of radioactive materials many still believe however
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that nuclear power is one of the future's greenest energy alternatives.
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In the end, are any of these sources alone the answer to our current energy problems?
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The short answer is no, but used in some combination, along with other power sources,
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we may find ways to reduce and eventually eliminate our dependence on fossil fuels.
📺 Mesmo canal
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Por que praticar fala com esse vídeo?
O vídeo "RE3 Unit 7A" é uma ferramenta perfeita para prática de conversação em inglês e shadowing em inglês, pois explora tópicos atuais sobre energia renovável com linguagem clara e contextualizada. Ao imitar a pronúncia e o ritmo do narrador, você melhora sua fluência e aprende a articular termos técnicos (como "solar panels" ou "wind turbines") de forma natural. Além disso, o conteúdo incentiva a discussão sobre questões globais, ideal para expandir seu vocabulário e confiança na fala.
Gramática e expressões no contexto
- "Despite modern society's heavy dependence...": A preposição "despite" (apesar de) é usada para contrastar ideias, seguida de substantivo ou gerúndio. Útil para argumentos em debates.
- "which is the ideal place to gather energy...": A cláusula relativa "which" (que) refere-se a um termo anterior, conectando informações de forma coesa. Essencial para estruturar frases longas.
- "If the wind doesn't blow, the turbines are not able to...": Condicional tipo 1 (se + presente, futuro) para expressar situações reais. Fundamental para descrever consequências.
Armadilhas comuns de pronúncia
Algumas palavras no vídeo podem ser desafiadoras: "fossil fuels" (combustíveis fósseis) tem a sílaba tônica em "fossil" (FÓS-sil), não em "fuels". "Nuclear" (nuclear) é pronunciado "NU-clee-er" (não "noo-KLE-ar"). "Turbines" (turbinas) tem o "i" curto: "TUR-bins". Para superar essas armadilhas, use o shadowing: reproduza a fala do narrador imediatamente após ouvi-la, focando no ritmo e na entonação. Plataformas de shadowing site ou apps como shadowspeak podem ajudar a treinar essas nuances.
Gramática neste vídeo
As estruturas que o falante mais usa, com as palavras exatas do vídeo:
| Estrutura | No vídeo |
|---|---|
| Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz | can be found · be turned · is caused |
| Present perfect have/has + particípio passado — uma ação passada que ainda importa agora | have led · have invested · has started |
| Orações relativas who / which + oração — informação extra sobre uma pessoa ou coisa | space, which is · rate, which is |
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.