Shadowing Practice: Cambridge 10 Test 4 Section 4 Listening - Learn English Speaking with Video

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Section 4.
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You will hear a woman talking to a group of first -year science undergraduates about the developing science of nanotechnology.
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First, you have some time to look at questions 31 to 40.
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Thank you. to 40.
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Today we're going to look at an important area of science, namely nanotechnology.
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So what is it?
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Nano means tiny, so it's science and engineering on the scale of atoms and molecules.
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The idea is that by controlling and rearranging atoms, you can literally create anything.
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However, as we'll see, the science of the small has some big implications, affecting us in many ways.
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There's no doubt that nanotechnology promises so much for civilization.
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However, all new technologies have their teething problems.
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And with nanotechnology, society often gets the wrong idea about its capabilities.
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Numerous science fiction books and movies have raised people's fears about nanotechnology,
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with scenarios such as inserting little nanorobots into your body that monitor everything you do without you realising it,
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or self -replicating nanorobots that eventually take over the world.
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So, how do we safeguard such a potentially powerful technology.
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Some scientists recommend that nanoparticles be treated as new chemicals with separate safety tests and clear labelling.
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They believe that greater care should also be taken with nanoparticles in laboratories and factories.
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Others have called for a withdrawal of new nanoproducts such as cosmetics and a temporary halt to many kinds of nanotech research.
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But as far as I'm concerned, there's a need to plough ahead with the discoveries and applications of nanotechnology.
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I really believe that most scientists would welcome a way to guard against unethical uses of such technology.
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We can't go around thinking that all innovation is bad, all advancement is bad.
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As with the debate about any new technology, it is how you use it that's important.
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So, let's look at some of its possible uses.
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Thanks to nanotechnology, there could be a major breakthrough in the field of transportation, with the production of more durable metals.
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These could be virtually unbreakable, lighter and much more pliable, leading to planes that are 50 times lighter than at present.
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Those same improved capabilities will dramatically reduce the cost of travelling into space,
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making it more accessible to ordinary people and opening up a totally new holiday destination.
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In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes.
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We need nanotechnology in order to create a new generation of computers
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that will work even faster and will have a million times more memory, but will be about the size of a sugar cube.
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Nanotechnology could also revolutionise the way that we generate power.
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The cost of solar cells will be drastically reduced, so harnessing this energy will be far more economical than at present.
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But nanotechnology has much wider applications than this and could have an enormous impact on our environment.
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For instance, tiny airborne nanorobots could be programmed to actually rebuild the ozone layer,
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which could lessen the impact of global warming on our planet.
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That's a pretty amazing thought, isn't it?
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On a more local scale,
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this new technology could help with the clean -up of environmental disasters as nanotechnology will allow us to remove oil
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and other contaminants from the water far more effectively.
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And if nanotechnology progresses as expected, as a sort of building block set of about 90 atoms,
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then you could build anything you wanted from the bottom up.
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In terms of production, this means that you only use what you need and so there wouldn't be any waste
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The notion that you could create anything at all has major implications for our health
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It means that we'll eventually be able to replicate anything
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This would have a phenomenal effect on our society
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In time, it could even lead to the eradication of famine through the introduction of machines
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that produce food to feed the hungry.
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But it's in the area of medicine that nanotechnology may have its biggest impact.
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How we detect disease will change as tiny biosensors are developed to analyse tests in minutes rather than days.
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There's even speculation nanorobots could be used to slow the ageing process, lengthening life expectancy.
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As you can see, I'm very excited by the implications that could be available to us in the next few decades.
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Just how long it'll take, I honestly don't know.
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That is the end of Section 4.
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You now have half a minute to check your answers.
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Thank you.
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to transfer your answers to the answer sheet.

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Vocabulario y notas de pronunciación para esta lección

Esta lección de conversación se basa en el vídeo “Cambridge 10 Test 4 Section 4 Listening”. Las palabras que más se repiten: nanotechnology, science, technology, nanorobots, atoms. Este vídeo tiene 57 frases y 753 palabras para practicar shadowing. La parte hablada dura 7:23. El hablante habla despacio, unas 102 palabras por minuto, así que hay tiempo para imitar cada sonido. El 82 % de las palabras está entre las 3.000 más comunes del inglés; conviene repasar el resto antes de empezar.

Vocabulario clave de este vídeo

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

PalabraPronunciaciónSignificado
atom sustantivo/ˈætəm/átomo
hungry adjetivo/ˈhʌŋ.ɡɹi/hambriento, tener hambre
scientist sustantivo/ˈsaɪəntəst/científico, científica
replicate verbo/ˈɹɛplɪkeɪt/replicar
temporary adjetivo/ˈtɛmp(əˌɹ)ɛɹi/temporario, temporáneo
discovery sustantivo/dɪˈskʌv.ɹi/descubrimiento, hallazgo
fiction sustantivo/ˈfɪkʃən/ficción
label sustantivo/ˈleɪ.bəl/etiqueta, rótulo
ordinary adjetivo/ˈɔɹdɪnɛɹi/ordinario
layer sustantivo/ˈleɪ̯ɚ/capa, tongada
sheet sustantivo/ʃit/hoja, folio
disaster sustantivo/dɪˈzɑːs.təː/desastre
potentially adverbio/pəˈtɛnʃ(ə)li/potencialmente, presuntamente
monitor sustantivo/ˈmɑ.nɪ.tɚ/monitor
innovation sustantivo/ˌɪn.əˈveɪ.ʃən/innovación

Phrasal verbs que vas a escuchar

PalabraSignificado
go around verbocundir
take over verboapoderarse, enseñorearse

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 hacebe treated · be taken · could be programmed
Present perfect have/has + participio pasado — una acción pasada que sigue importando ahorahave raised · have called

Pronunciación a tener en cuenta

El hablante usa 10 contracciones y formas reducidas, como I'm, we'll, can't. Dilas en su forma corta, tal como las oyes.

  • Los sonidos de “th”: withdrawal /wɪðˈdɹɔ(ə)l/, breakthrough /ˈbɹeɪk.θɹuː/, lengthen /ˈlɛŋθən/, teethe /tiːð/, unethical /ʌnˈɛθɪkəl/
  • Los sonidos de “sh” y “zh”: implication /ˌɪmpləˈkeɪʃən/, fiction /ˈfɪkʃən/, sheet /ʃit/, potentially /pəˈtɛnʃ(ə)li/, innovation /ˌɪn.əˈveɪ.ʃən/
  • Palabras largas — cuida el acento: implication /ˌɪmpləˈkeɪʃən/, capability /ˌkeɪ.pəˈbɪl.ɪ.ti/, temporary /ˈtɛmp(əˌɹ)ɛɹi/, ordinary /ˈɔɹdɪnɛɹi/, potentially /pəˈtɛnʃ(ə)li/

Sonidos difíciles para hispanohablantes:

  • /v/ — no es /b/: los dientes tocan el labio inferior: discovery /dɪˈskʌv.ɹi/, innovation /ˌɪn.əˈveɪ.ʃən/, virtually /ˈvɚ.t͡ʃə.wə.li/, civilization /ˌsɪv.ɪ.laɪˈzeɪ.ʃən/, advancement /ædˈvæns.mənt/
  • /z/ — sonora, no /s/: disaster /dɪˈzɑːs.təː/, civilization /ˌsɪv.ɪ.laɪˈzeɪ.ʃən/, cosmetics /kɒzˈmɛt.ɪks/, ozone /ˈoʊzoʊn/
  • /dʒ/ — no es la “y” ni la “ch”: generate /ˈd͡ʒɛn.ə.ɹeɪt/, nanotechnology /ˌnænoʊtɛkˈnɑləd͡ʒi/, rearrange /ˌɹiːəˈɹeɪndʒ/

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 atom, hungry, scientist.

¿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 →