Prática de Shadowing: Cambridge 15 listening (Test-1) (Part-4) - Aprenda a falar inglês com vídeo

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Part 4.
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You will hear a student giving a presentation about a type of tree known as the eucalyptus.
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which is common in Australia.
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First, You have some time to look at questions 31 to 40.
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Now listen carefully and answer questions 31 to 40.
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Today, I'm going to talk about the eucalyptus tree.
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This is a very common tree here in Australia, where it's also sometimes called the gum tree.
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First, I'm going to talk about why it's important.
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Then I'm going to describe some problems it faces at present.
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Right, well, the eucalyptus tree is an important tree for lots of reasons.
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For example, it gives shelter to creatures like birds and bats.
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And these and other species also depend on it for food, particularly the nectar from its flowers.
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So, it supports biodiversity.
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It's useful to us humans too because we can kill germs with a disinfectant made from oil extracted from eucalyptus leaves.
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The eucalyptus grows all over Australia, and the trees can live for up to 400 years.
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So, it's alarming that all across the country, numbers of eucalyptus are falling because the trees are dying off prematurely.
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So, what are the reasons for this?
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One possible reason is disease.
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As far back as the 1970s, the trees started getting a disease called mundula yellows.
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The tree's leaves would gradually turn yellow, then the tree would die.
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It wasn't until 2004 that they found the cause of the problem was lime,
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or calcium hydroxide, to give it its proper chemical name, which was being used in the construction of roads.
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The lime was being washed away into the ground and affecting the roots of the eucalyptus trees nearby.
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What it was doing was preventing the trees from sucking up the iron they needed for healthy growth.
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When this was injected back into the affected trees, they immediately recovered.
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But this problem only affected a relatively small number of trees.
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By 2000, huge numbers of eucalyptus were dying along Australia's east coast of a disease known as Bell Minor -associated dieback.
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The bell miner is a bird and the disease seems to be common where there are high populations of bell miners.
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Again, it's the leaves of the trees that are affected.
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What happens is that insects settle on the leaves and eat their way round them, destroying them as they go,
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and at the same time they secrete a solution which has sugar in it.
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Thank you.
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The bell miner birds really like this solution, and in order to get as much as possible,
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they keep away other creatures that might try to get it.
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So these birds and insects flourish at the expense of other species,
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and eventually so much damage is done to the leaves that the tree dies.
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But experts say that trees can start looking sick before any sign of bell minor -associated dieback.
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So it looks as if the problem might have another explanation.
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One possibility is that it's to do with the huge bushfires that we have in Australia.
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A theory proposed over 40 years ago by ecologist William Jackson is
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that the frequency of bushfires in a particular region affects the type of vegetation that grows there.
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If there are very frequent bushfires in a region, this encourages grass to grow afterwards,
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while if the bushfires are rather less frequent, this results in the growth of eucalyptus forests.
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So, why is this?
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Why do fairly frequent bushfires actually support the growth of eucalyptus?
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Well, one reason is that the fire stops the growth of other species which would consume water needed by eucalyptus trees. And there's another reason.
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If these other quick -growing species of bushes and plants are allowed to proliferate,
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they harm the eucalyptus in another way by affecting the composition of the soil and removing nutrients from it.
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So some bushfires are actually essential for the eucalyptus to survive,
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as long as they are not too frequent. In fact, there's evidence
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that Australia's indigenous people practised regular burning of bushland for thousands of years before the arrival of the Europeans.
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But since Europeans arrived on the continent, the number of bushfires has been strictly controlled.
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Now, scientists believe that this reduced frequency of bushfires to low levels has led to what's known as 'dry' rainforest,
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which seems an odd name as usually we associate tropical rainforest with wet conditions.
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And what's special about this type of rainforest?
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Well?
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Unlike tropical rainforest, which is a rich ecosystem, this type of ecosystem is usually a simple one.
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It has very thick, dense vegetation but not much variety of species.
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The vegetation provides lots of shade, so one species that does find it ideal is the bell -miner bird,
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which builds its nests in the undergrowth there.
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But again, that's not helpful for the eucalyptus tree.
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That is the end of part four.
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You now have one minute to check your answers to part four.
📺 Mesmo canal
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Por que praticar a fala com este vídeo?

Praticar a fala com o vídeo sobre a árvore eucalyptus é uma excelente forma de aprimorar suas habilidades de comunicação em inglês. Este tipo de conteúdo não só aumenta seu vocabulário, mas também proporciona um contexto real onde você pode aprender a utilizar expressões específicas. Ao ouvir um estudante apresentando informações sobre o eucalyptus, você está imerso em um ambiente acadêmico que reproduz situações que pode encontrar em sua vida cotidiana ou profissional.

Além disso, a prática de shadowing em inglês permite que você repita as falas de um falante nativo em tempo real, o que pode melhorar sua fluência e facilitar o desenvolvimento de uma pronúncia mais precisa. Assim, você estará não somente aprendendo inglês com youtube, mas também aplicando técnicas de imitação que facilitam a retenção do conhecimento.

Gramática & Expressões em Contexto

  • Expressões idiomáticas: O uso de expressões como "it gives shelter" e "depends on it for food" permite entender como construir frases que expressam dependência e suporte.
  • Uso do tempo verbal: O vídeo faz uso do presente simples e do presente contínuo, ajudando os ouvintes a compreenderem como descrever fatos permanentes e ações em andamento.
  • Estrutura de causa e efeito: Palavras como "because" e "as a result" são importantes ao explicar razões e consequências, essencial para fortalecer suas argumentações em inglês.

Essas estruturas são cruciais para expor ideias de forma clara e argumentativa, algo muito valorizado tanto em ambientes acadêmicos quanto informais.

Armadilhas Comuns de Pronúncia

Durante a apresentação, existem algumas palavras e frases que podem representar um desafio para os aprendizes de inglês. Por exemplo, "eucalyptus" e "gum tree" podem ser difíceis de pronunciar corretamente devido às suas sílabas e ritmo. Além disso, a frase "bell minor-associated dieback" contém uma junção de palavras que pode confundir até mesmo falantes nativos, especialmente por causa do som do "r".

Para melhorar a pronúncia em inglês, tente se concentrar em cada parte da palavra e repita lentamente. O uso de shadow speech com esse vídeo permitirá que você entenda a entonação e o ritmo, essenciais para uma fala clara e compreensível.

Ao praticar a fala e a pronúncia com este vídeo, você não apenas vai melhorar sua habilidade de comunicação, mas também ganhar confiança para usar o inglês em diversas situações.

Gramática neste vídeo

As estruturas que o falante mais usa, com as palavras exatas do vídeo:

EstruturaNo vídeo
Voz passiva be + particípio passado — o foco está no que acontece, não em quem fazbeing washed · was injected · are affected
Orações relativas who / which + oração — informação extra sobre uma pessoa ou coisaname, which was · solution which has · rainforest, which is
Present perfect have/has + particípio passado — uma ação passada que ainda importa agorahas been · has led

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.

Técnica de shadowing: leia o guia completo passo a passo →