Shadowing Practice: RE2 Unit 9B - Learn English Speaking with Video

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Track 18.
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Reading 9b.
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Seeing Double.
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Many scientists once believed that physical similarities between identical twins are genetic,
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while their personalities, intelligence, and other differences between them are an effect of their environment.
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But scientists are now discovering that the boundaries between genetics and environment are not so clear after all.
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The Jim twins.
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Identical twins, Jim Springer and Jim Lewis, were adopted as babies and raised by different couples.
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When the two Jims finally met at age 39, they discovered they had plenty in common.
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Both were 182 centimeters tall and weighed 82 kilograms.
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They had the same smile and the same voice.
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When psychologist Thomas Bouchard Jr. invited the gym twins to his lab, his colleagues found it very hard to tell them apart.
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But the similarities didn't stop at the physical.
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They had both had dogs named Toy.
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They had both married women named Linda and then divorced them.
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They had both been sheriffs, enjoyed making things with wood,
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suffered severe headaches, and admitted to leaving love notes around the house for their wives.
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They had so much in common that it seemed unlikely these were just coincidences.
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Genetics and Intelligence The Jim twins were just one of 137 sets of separated twins Bouchard tested.
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When they compared the twins' IQ scores, Bouchard and his team reached a surprising conclusion.
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They concluded that intelligence was mostly connected to genetics rather than to training or education.
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It seemed the differences in family and environment had little effect.
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However, genes can't control everything, argues geneticist Danielle Reed, who also studies twins.
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Reed's research shows that though nothing can truly change our DNA,
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environmental differences that a child experiences before birth and in their first year can sometimes affect the way the DNA behaves.
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This can make even identical twins into vastly different people.
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What I like to say is that
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Mother Nature writes some things in pencil and some things in pen.
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She explains, things
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Things written in pen you can't change.
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That's DNA.
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But things written in pencil you can.

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Vocabulario y notas de pronunciación para esta lección

Las palabras que más se repiten: twins, Jim, genetic, Bouchard, identical. Este vídeo tiene 32 frases y 337 palabras para practicar shadowing. La parte hablada dura 2:54. El hablante mantiene un ritmo constante de unas 116 palabras por minuto, cómodo para el shadowing. Solo el 79 % de las palabras está entre las 3.000 más comunes del inglés, por lo que el vocabulario es exigente.

Vocabulario clave de este vídeo

15 palabras del vídeo que vale la pena aprender, con su pronunciación y significado:

PalabraPronunciaciónSignificado
twin sustantivo/twɪn/gemelo, gemela
identical adjetivo/ɪˈdɛntɪkl̩/idéntico, clónico
genetics sustantivo/dʒəˈnɛt.ɪks/genética
discover verbo/dɪˈskʌvə/descubrir
scientist sustantivo/ˈsaɪəntəst/científico, científica
pencil sustantivo/ˈpɛnsəl/lápiz
similarity sustantivo/ˌsɪm.ɪˈlæɹ.ɪ.ti/semejanza, similaridad
argue verbo/ˈɑɹ.ɡju/argüir, argumentar
compare verbo/kəmˈpɛɚ/comparar, parangonar
suffer verbo/ˈsʌfɚ/sufrir, penar
conclusion sustantivo/kənˈkluːʒən/conclusión, neta
connect verbo/kəˈnɛkt/conectar, empalmar
divorce sustantivo/dɪˈvɔːs/divorcio
gene sustantivo/d͡ʒiːn/gen, gene
genetic adjetivo/d͡ʒəˈnɛt.ɪk/genético

Pronunciación a tener en cuenta

El hablante usa 3 contracciones y formas reducidas, como can't, didn't. Dilas en su forma corta, tal como las oyes.

  • Los sonidos de “sh” y “zh”: conclusion /kənˈkluːʒən/, sheriff /ˈʃɛɹɪf/
  • Palabras largas — cuida el acento: similarity /ˌsɪm.ɪˈlæɹ.ɪ.ti/, coincidence /kəʊˈɪnsɪdəns/, psychologist /ˌsaɪˈkɑl.ə.d͡ʒɪst/, geneticist /d͡ʒəˈnɛt.ɪ.sɪst/

Sonidos difíciles para hispanohablantes:

  • /v/ — no es /b/: los dientes tocan el labio inferior: discover /dɪˈskʌvə/, divorce /dɪˈvɔːs/, invite /ɪnˈvaɪt/, behave /bɪˈheɪv/, vastly /ˈvæstli/
  • /dʒ/ — no es la “y” ni la “ch”: genetics /dʒəˈnɛt.ɪks/, gene /d͡ʒiːn/, genetic /d͡ʒəˈnɛt.ɪk/, psychologist /ˌsaɪˈkɑl.ə.d͡ʒɪst/, geneticist /d͡ʒəˈnɛt.ɪ.sɪst/
  • /h/ — una aspiración suave, no la “j”: behave /bɪˈheɪv/, headache /ˈhɛdeɪk/

Cómo practicar con este vídeo

  1. Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
  2. Haz shadowing frase por frase a velocidad normal, repitiendo cada una hasta que tu ritmo coincida con el del hablante.
  3. Grábate y compara con el original, prestando atención a palabras como twin, identical, genetics.

¿Qué es la Técnica de Shadowing?

Shadowing es una técnica de aprendizaje de idiomas respaldada por la ciencia, desarrollada originalmente para la formación de intérpretes profesionales y popularizada por el políglota Dr. Alexander Arguelles. El método es simple pero poderoso: escuchas audio en inglés nativo y lo repites en voz alta de inmediato, como una sombra que sigue al hablante con solo 1-2 segundos de retraso. A diferencia de la escucha pasiva o los ejercicios de gramática, el shadowing obliga a tu cerebro y músculos de la boca a procesar y reproducir simultáneamente patrones de habla reales. Las investigaciones muestran que mejora significativamente la precisión de la pronunciación, la entonación, el ritmo, el habla conectada, la comprensión auditiva y la fluidez al hablar, convirtiéndola en una de las metodologías más efectivas para la preparación del IELTS Speaking y la comunicación en inglés en el mundo real.

Técnica de shadowing: lee la guía completa paso a paso →