Prática de Shadowing: Natural Gas 101 - Aprenda a falar inglês com vídeo

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Natural gas.
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Natural gas is primarily methane, or CH4, with smaller quantities of other hydrocarbons.
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It was formed millions of years ago
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when dead organisms sunk to the bottom of the ocean and were buried under deposits of sedimentary rock.
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Subject to intense heat and pressure, these organisms underwent a transformation in which they were converted to gas over millions of years.
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Natural gas is found in underground rocks called reservoirs.
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The rocks have tiny spaces called pores that allow them to hold water, natural gas, and sometimes oil.
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The natural gas is trapped underground by impermeable rock called a cap rock and stays there until it is extracted.
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Natural gas can be categorized as dry or wet.
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Dry gas is essentially gas that contains mostly methane.
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Wet gas, on the other hand, contains compounds such as ethane and butane, in addition to methane.
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These natural gas liquids, or NGLs for short, can be separated and sold individually for various uses, such as in refrigerants and to produce products, like plastics.
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Conventional natural gas can be extracted through drilling wells.
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Unconventional forms of natural gas, like shale gas, tight gas, sour gas, and coal bed methane, have specific extraction techniques.
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Natural gas can also be found in reservoirs with oil and is sometimes extracted alongside oil.
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This type of natural gas is called associated gas.
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In the past, associated gas was commonly flared or burned as a waste product, but in most places today it is captured and used.
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Once extracted, natural gas is sent through small pipelines called gathering lines to processing plants, which separate the various hydrocarbons
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and fluids from the pure natural gas to produce what is
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known as pipeline quality dry natural gas before it can be transported.
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Processing involves four main steps to remove the various impurities.
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Oil and condensate removal, water removal, separation of natural gas liquids, sulfur and carbon dioxide removal.
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Gas is then transported through pipelines called feeders to distribution centers where it is stored in underground reservoirs for later use.
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In some cases, gas is liquefied for shipping in large tankers across oceans.
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This type of gas is called liquefied natural gas, or LNG.
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Natural gas is mostly used for domestic or industrial heating and to generate electricity.
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It can also be compressed and used to fuel vehicles and as a feedstock for fertilizers, hydrogen fuel cells, and other chemical processes.
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Natural gas development, especially in the United States, has increased as a result of technological advances in horizontal drilling and hydraulic fracturing.
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When natural gas is burned, there are fewer greenhouse gas emissions and air pollutants when compared to other fossil fuels.
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In fact, when used to produce electricity, natural gas emits approximately half the carbon emissions of coal.
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Despite fewer emissions, natural gas is still a source of CO2.
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In addition, methane is a potent greenhouse gas itself, having nearly 24 times the impact of CO2.
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During the extraction and transportation process, natural gas can escape into the atmosphere and contribute to climate change.
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Natural gas leaks are also dangerous to nearby communities because it is a colorless, odorless, highly toxic and highly explosive gas.
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That's natural gas.

Vocabulário e dicas de fala para esta lição

Este vídeo tem 35 frases e 528 palavras para praticar shadowing. A fala dura 3:28. O falante fala em ritmo natural, cerca de 153 palavras por minuto, próximo de uma conversa do dia a dia. Apenas 75% das palavras estão entre as 3.000 mais comuns do inglês, por isso o vocabulário é exigente.

Vocabulário principal deste vídeo

15 palavras menos comuns do vídeo, com pronúncia e significado:

  • methane /ˈmiːθeɪn/ (substantivo) — metano. The simplest aliphatic hydrocarbon, CH₄, being a constituent of natural gas, and one of the most abundant greenhouse gases.
  • extract /ˈɛkstɹækt/ (substantivo) — extrato. Something that is extracted or drawn out.
  • removal /ɹɪˈmuː.vəl/ (substantivo) — remoção, eliminação. The process of removing or the fact of being removed.
  • underground /ˌʌn.dəɹˈɡɹaʊnd/ (adjetivo) — subterrâneo. Below the ground; below the surface of the Earth.
  • pipeline /ˈpaɪpˌlaɪn/ (substantivo) — ducto, duto. A conduit made of pipes used to convey water, gas or petroleum, etc.
  • reservoir /ˈɹɛz.ə(ɹ).vwɑɹ/ (substantivo) — reservatório, barragem. A place where anything is kept in store.
  • emission /ɪˈmɪʃ.ən/ (substantivo) — emissão. Something which is emitted or sent out; issue.
  • electricity /ɪˌlɛkˈtɹɪsɪti/ (substantivo) — eletricidade. Originally, a property of amber and certain other nonconducting substances to attract lightweight material when rubbed, or the cause of this property; now…
  • associate /əˈsoʊʃi.ət/ (substantivo) — associado. A person united with another or others in an act, enterprise, or business; a partner or employee.
  • liquid /ˈlɪk.wɪd/ (substantivo) — líquido. A substance that is flowing, and keeping no shape, such as water; a substance of which the molecules, while not tending to separate from one another like those…
  • fewer /ˈfjuː.ɚ/ — menos. Less; a smaller amount of something non-integral commonly expressed as an integer
  • drill /dɹɪl/ (substantivo) — furadeira, berbequim. A tool or machine used to remove material so as to create a hole, typically by plunging a rotating cutting bit into a stationary workpiece.
  • greenhouse /ˈɡɹːnˌ(h)aʊs/ (substantivo) — viveiro, estufa. A building used to grow plants, particularly one with large glass windows or plastic sheeting to trap heat from sunlight even in intemperate seasons or…
  • organism /ˈɔɹ.ɡəˌnɪz.əm/ (substantivo) — organismo. A discrete and complete living thing, such as animal, plant, fungus or microorganism.
  • technique /tɛkˈniːk/ (substantivo) — técnica. The practical aspects of a given art, occupation etc.; formal requirements.

Pronúncia para ficar de olho

  • Os sons de “th”: methane /ˈmiːθeɪn/, gather /ˈɡæðɚ/, ethane /ˈɛθeɪn/
  • Os sons de “sh” e “zh”: emission /ɪˈmɪʃ.ən/, associate /əˈsoʊʃi.ət/, extraction /ɪkˈstɹækʃən/, capture /ˈkæp.(t)ʃɚ/, essentially /ɪˈsɛnʃəli/
  • Palavras longas — acerte a sílaba tônica: electricity /ɪˌlɛkˈtɹɪsɪti/, associate /əˈsoʊʃi.ət/, organism /ˈɔɹ.ɡəˌnɪz.əm/, primarily /ˈpɹaɪ.mə.ɹə.li/, essentially /ɪˈsɛnʃəli/

Como praticar com este vídeo

  1. Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
  2. Comece na velocidade 0,75×, faça shadowing frase por frase e volte à velocidade normal quando ficar fácil.
  3. Grave a sua voz e compare com o original, prestando atenção a palavras como methane, extract, removal.

Gramática neste vídeo

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

EstruturaNo vídeo
“Used to” used to + verbo — um hábito ou estado do passado que não é mais verdadeused to fuel · used to produce
Voz passiva be + particípio passado — o foco está no que acontece, não em quem fazwas formed · were buried · were converted

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 →