Shadowing Practice: Touchscreens – How Do They Work? - Learn English Speaking with Video

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Touchscreens, how do they work?
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Fine conductive layers of horizontal and vertical threads run through the glass of the display, producing an electric field at each intersection of wires.
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When a fingertip approaches the display, it distorts the electrical fields of the intersections near the point of touch.
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Measurements of the edges of the screen locate the exact position on this invisible grid,
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and the software acts accordingly by doing whatever we wanted to do.
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In that way, a touchscreen can act like thousands of buttons that detect multiple touches and movements along the screen.
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Although touchscreens changed our lives a lot in the 21st century, the technology for touchscreens had already been invented in the 1960s.
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It took a few more decades of research and optimization,
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a video game console and of course the smartphone to finally bring it into almost every person's life.
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It significantly reduced the distance between humans and machines, brought dating down to the movement of a thumb and caused toddlers to swipe and pinch windows.

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Vocabulario y notas de pronunciación para esta lección

Esta lección de conversación se basa en el vídeo “Touchscreens – How Do They Work?”. Este vídeo tiene 10 frases y 171 palabras para practicar shadowing. La parte hablada dura 0:50. El hablante habla rápido, unas 204 palabras por minuto, así que espera sonidos enlazados y reducidos. Solo el 75 % 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
intersection sustantivo/ˈɪntəɹˌsɛkʃən/cruce
thread sustantivo/ˈθɹɛd/hilo, bouclé (buclé)
wire sustantivo/ˈwaɪɚ/alambre, hilo
layer sustantivo/ˈleɪ̯ɚ/capa, tongada
grid sustantivo/ɡɹɪd/cuadrícula, matriz
vertical adjetivo/ˈvɝ.tɪ.kəl/vertical
invisible adjetivo/ɪnˈvɪzəb(ə)l/invisible
smartphone sustantivo/ˈsmɑɹtfoʊn/teléfono inteligente
detect verbo/dɪˈtɛkt/detectar
measurement sustantivo/ˈmɛʒ.ə.mənt/medida, medición
accordingly adverbio/əˈkɔɹ.dɪŋ.li/en consecuencia, como corresponde
thumb sustantivo/ˈθʌm/pulgar, pólice
locate verbo/ˈloʊˌkeɪt/ubicar, colocar
horizontal adjetivo/ˌhoɹəˈzɑn.təl/horizontal
toddler sustantivo/ˈtɑdlɚ/niñito, nené

Phrasal verbs que vas a escuchar

PalabraSignificado
run through verboresumir

Gramática en este vídeo

Las estructuras que más usa el hablante, con las palabras exactas del vídeo:

EstructuraEn el vídeo
Voz pasiva be + participio pasado — importa lo que ocurre, no quién lo hacebeen invented

Pronunciación a tener en cuenta

  • Los sonidos de “th”: thread /ˈθɹɛd/, thumb /ˈθʌm/
  • Los sonidos de “sh” y “zh”: intersection /ˈɪntəɹˌsɛkʃən/, measurement /ˈmɛʒ.ə.mənt/, optimization /ˌɑptəmaɪˈzeɪʃən/
  • Palabras largas — cuida el acento: intersection /ˈɪntəɹˌsɛkʃən/, electrical /ɪˈlɛktɹɪkəl/, invisible /ɪnˈvɪzəb(ə)l/, accordingly /əˈkɔɹ.dɪŋ.li/, horizontal /ˌhoɹəˈzɑn.təl/

Sonidos difíciles para hispanohablantes:

  • s + consonante al inicio — sin añadir una “e” delante: smartphone /ˈsmɑɹtfoʊn/, swipe /swaɪp/
  • /v/ — no es /b/: los dientes tocan el labio inferior: vertical /ˈvɝ.tɪ.kəl/, invisible /ɪnˈvɪzəb(ə)l/, invent /ɪnˈvɛnt/, conductive /kənˈdʌktɪv/
  • /z/ — sonora, no /s/: invisible /ɪnˈvɪzəb(ə)l/, horizontal /ˌhoɹəˈzɑn.təl/, optimization /ˌɑptəmaɪˈzeɪʃən/

Cómo practicar con este vídeo

  1. Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
  2. Empieza a velocidad 0,75×, haz shadowing frase por frase y vuelve a la velocidad normal cuando te resulte fácil.
  3. Grábate y compara con el original, prestando atención a palabras como intersection, thread, wire.

¿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 →