Shadowing Practice: What is Supply and Demand? Explained for Beginners - Learn English Speaking with Video
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Have you ever wondered why prices rise when we want something most?
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You'll save up for a concert, but the tickets will sell out in seconds and cost a fortune.
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Or you're planning a vacation and it costs less to travel in September than in July.
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What's going on?
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It's the invisible forces of supply and demand shaping everything you see.
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Stick around and you'll never look at a price tag the same way again again.
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Supply and demand are the forces that shape nearly every price you see.
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Supply means how much of something is available.
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Demand is how much people want it.
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When demand goes up and supply stays the same, prices rise.
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When supply increases and demand drops, prices fall.
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We can see these forces at work wherever wherever we look in the world around us.
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Take these two musical artists as an example.
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Our first musical artist is an international star.
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The demand for her concerts is legendary.
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When tickets went on presale, 10 million people rushed to sign up, but only 1 million tickets were available.
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Because demand for tickets is high and supply is limited, she can charge a lot of money for each ticket.
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Our second musical artist is new to the scene.
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He advertises his latest show at a local venue, but demand for tickets is low.
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After a few weeks, there are still plenty of tickets left.
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Because the supply of tickets is high, but the demand is low, he lowers the ticket price to encourage people to buy them.
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Economists use graphs to show how supply and demand interact.
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Let's see how it works.
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The vertical axis, or Y axis, shows price.
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In our example, how much a concert ticket costs.
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The horizontal axis, or X axis, shows quantity.
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How many tickets are sold.
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Every point on this graph shows a combination of a price and a quantity.
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Now let's add the demand curve and the supply curve.
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A demand curve always slopes downward, like a slide.
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Why?
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Because when prices go up, demand goes down.
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In our example, as prices of tickets go up, fewer fans can afford the tickets.
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The demand naturally curves down as the price goes up.
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As the prices go down, more fans want the tickets and can afford them, so demand goes up.
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A supply curve slopes upward, like walking up a hill.
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Why?
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Because sellers want to make money.
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The higher the price of a ticket, the more profitable the concert becomes, so the venue is willing to sell more tickets.
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The line starts low on the left and climbs to the right to show the rising price of the good, in this case, a concert ticket.
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When we put both lines on the graph, they cross at one point.
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That point is called the equilibrium, the point where supply and demand meet.
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In our example, it's the price fans are willing to pay
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and the number of tickets the venue or musical artist is willing to sell.
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If a concert becomes super popular and demand goes up, prices rise.
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Fans are willing to pay a premium to see their favorite artist perform.
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If fewer people want to go, demand decreases and prices fall as the venue lowers ticket prices to fill seats.
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Economists use these graphs because they help us predict what will happen in the real world.
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From concert tickets or sneakers to electronics and toys.
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Once you understand supply and demand, you can understand almost any price you see.
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So the next time you see something selling out fast or suddenly getting cheaper, you'll know exactly what's going on behind the scenes.
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You're not just a shopper, you're thinking like an economist.
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you
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Vocabulario y notas de pronunciación para esta lección
Esta lección de conversación de nivel B1 se basa en el vídeo “What is Supply and Demand? Explained for Beginners”. Las palabras que más se repiten: ticket, demand, price, supply, concert. Este vídeo tiene 53 frases y 621 palabras para practicar shadowing. La parte hablada dura 3:57. El hablante habla a un ritmo natural de unas 157 palabras por minuto, cercano a una conversación cotidiana. El 86 % de las palabras está entre las 3.000 más comunes del inglés; conviene repasar el resto antes de empezar.
Vocabulario clave de este vídeo
Las 15 palabras más avanzadas del vídeo, con su pronunciación y significado:
| Palabra | Pronunciación | Significado |
|---|---|---|
| curve sustantivo | /kɚv/ | curva |
| axis sustantivo | /ˈæksɪs/ | eje |
| graph sustantivo | /ɡɹæf/ | gráfico, gráfica |
| venue sustantivo | /ˈvɛnjuː/ | escena, sala |
| economist sustantivo | /iˈkɑ.nə.mɪst/ | economista |
| slope sustantivo | /sloʊp/ | pendiente, cuesta |
| quantity sustantivo | /ˈkwɑn(t)ɪti/ | cantidad, cuantía |
| wherever | /(h)wɛɹˈɛvɚ/ | dondequiera, donde sea |
| fewer | /ˈfjuː.ɚ/ | menos |
| presale sustantivo | preventa | |
| shopper sustantivo | /ˈʃɑ.pɚ/ | comprador, compradora |
| sneaker sustantivo | /ˈsnikɚ/ | pillo |
| equilibrium sustantivo | /ɛkwɪˈlɪbɹɪəm/ | equilibrio |
| advertise verbo | /ˈædvɚˌtaɪ̯z/ | anunciar |
| downward adverbio | /ˈdaʊnwɚd/ | hacia abajo |
Phrasal verbs que vas a escuchar
| Palabra | Significado |
|---|---|
| go up verbo | subir |
| sign up verbo | inscribir, alistar |
Gramática en este vídeo
Las estructuras que más usa el hablante, con las palabras exactas del vídeo:
| Estructura | En el vídeo |
|---|---|
| Voz pasiva be + participio pasado — importa lo que ocurre, no quién lo hace | is limited · are sold · is called |
| Futuro con “will” will + verbo — una decisión, una promesa o una predicción | You'll save · you'll never look · will happen |
| Present continuous am/is/are + -ing — algo que ocurre ahora o en estos días | you're planning · you're thinking |
Pronunciación a tener en cuenta
El hablante usa 6 contracciones y formas reducidas, como you'll, you're. Dilas en su forma corta, tal como las oyes.
- Palabras largas — cuida el acento: economist /iˈkɑ.nə.mɪst/, equilibrium /ɛkwɪˈlɪbɹɪəm/, horizontal /ˌhoɹəˈzɑn.təl/, invisible /ɪnˈvɪzəb(ə)l/, electronics /ɪˌlɛkˈtɹɑ.nɪks/
Sonidos difíciles para hispanohablantes:
- s + consonante al inicio — sin añadir una “e” delante: slope /sloʊp/, sneaker /ˈsnikɚ/, slide /ˈslaɪ̯d/
- /v/ — no es /b/: los dientes tocan el labio inferior: curve /kɚv/, venue /ˈvɛnjuː/, wherever /(h)wɛɹˈɛvɚ/, advertise /ˈædvɚˌtaɪ̯z/, invisible /ɪnˈvɪzəb(ə)l/
- /z/ — sonora, no /s/: advertise /ˈædvɚˌtaɪ̯z/, horizontal /ˌhoɹəˈzɑn.təl/, invisible /ɪnˈvɪzəb(ə)l/
Cómo practicar con este vídeo
- Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
- Empieza a velocidad 0,75×, haz shadowing frase por frase y vuelve a la velocidad normal cuando te resulte fácil.
- Grábate y compara con el original, prestando atención a palabras como curve, axis, graph.
¿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.