Pratica di Shadowing: Monosodium Glutamate (MSG) With Answers | IELTS LISTENING SECTION-4 - Impara a parlare inglese con i video

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Section 4 You will hear part of a lecture about a chemical substance called monosodium glutamate.
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First, you have some time to look at questions 31 to 40.
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Thank you.
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Now listen carefully and answer questions 31 to 40.
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In today's lecture, I'm going to talk about monosodium glutamate, or MSG as it's more commonly known.
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Now, MSG, as you probably know, is a flavor enhancer which is used particularly in Chinese and Japanese cooking.
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Today, I am going to explore why it is so popular in these cuisines,
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and more importantly, How does it enhance the flavor of food?
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The main reason why MSG is more commonly used in Japanese meals is tradition.
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For many thousands of years, the Japanese have incorporated a type of seaweed known as kombu in their cooking,
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as they discovered it had the ability to make food taste better.
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But it wasn't until 1908 that the ingredient in kombu, which was responsible for the improvement in flavor,
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was actually discovered to be glutamate by scientists working there.
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From 1908 until 1956, glutamate was produced commercially in Japan by a very slow and expensive means of extraction.
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It was in 1956 that the speed of the process was improved
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and industrial production increased dramatically and still continues to increase to this day.
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In fact, hundreds of thousands of tons of MSG are produced all over the world today.
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So what exactly is MSG?
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Well, monosodium glutamate contains 78.2% glutamate,
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12.2% sodium, and 9.6% water.
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Glutamate is an amino acid that can be found naturally in all protein-containing foods,
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including food such as meat and cheese.
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It is widely known that Chinese and Japanese food contains MSG,
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but many people don't seem to be aware that it is also used in foods in other parts of the world.
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For example, it is found in commercially made Italian pizzas, in American fast food, and in Britain,
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MSG is used in things like potato crisps.
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So how exactly does MSG work?
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Well, in the Western world, we commonly talk of four tastes, and I'm sure you're all familiar with the concepts of sweet,
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sour, bitter, and salt.
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Well, in 1908, Kikunae Ikeda identified a fifth taste,
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and it is thought that MSG intensifies this naturally occurring taste in some food.
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It does make perfect evolutionary sense that we should have the ability to detect
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or taste glutamate because it is the amino acid which is most common in natural foods.
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John Prescott, an associate professor at the University of Chicago, suggests that this fifth taste serves a purpose just as the other tastes do.
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He suggests that it signals to us the presence of protein in food,
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in the same way that sweetness indicates that a food contains energy-giving carbohydrates.
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Bitterness, he says, alerts us to toxins in the food, while sourness warns us of spoilage,
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and saltiness signals the presence of minerals.
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So, what else do we know about this fifth tape?
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Thank you.

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Il contesto: Una lezione su MSG e il quinto gusto

La video lezione tratta di monosodico glutammato (MSG), un ingrediente usato in cucina, e introduce il concetto di quinto gusto. Questo scenario reale è perfetto per esercitare l'ascolto e la pronuncia, poiché combina termini tecnici (come "glutammato", "acido amminico") con esempi pratici (pizze, patatine fritte). È un contesto ideale per esercitare il shadowing in inglese, poiché la lezione è parlata a un ritmo chiaro e contiene frasi strutturate ma naturali.

Frasi utili e collocazioni da memorizzare

  • Flavor enhancer: "Aggiustatore di sapore" (es. "MSG è un flavor enhancer usato in cucina giapponese").
  • Intensifies the taste: "Intensifica il sapore" (es. "Il MSG intensifies the taste del quinto gusto").
  • Signals the presence of: "Segnala la presenza di" (es. "Il dolce signals the presence of carboidrati").
  • Commercially made: "Prodotto industrialmente" (es. "Pizze commercially made contengono spesso MSG").

La tua sfida di shadowing: Shadow speech

Ora è il momento di mettere in pratica il shadow speak! Segui questi passaggi: 1. Riproduci il video per 30 secondi, ascoltando attentamente la pronuncia e l'intonazione. 2. Pausa il video e ripeti immediatamente le frasi, cercando di imitare il ritmo e il tono. 3. Ripeti il processo 3 volte. Questo esercizio, noto anche come shadow speech, aiuta a migliorare la fluidità e la pronuncia. Per esercitarti di più, usa un shadowing site che offra contenuti simili. Ricorda: il shadowspeaks funziona se lo fai regolarmente, anche per 5 minuti al giorno!

La grammatica di questo video

Le strutture che chi parla usa di più, con le parole esatte del video:

StrutturaNel video
Forma passiva be + participio passato — conta ciò che accade, non chi lo fawas actually discovered · was produced · was improved
Frasi relative who / which + frase — un’informazione in più su una persona o una cosaenhancer which is · kombu, which was · acid which is

Cos'è la tecnica dello Shadowing?

Shadowing è una tecnica di apprendimento delle lingue supportata da studi scientifici, originariamente sviluppata per la formazione dei traduttori professionisti e resa popolare dal poliglotta Dr. Alexander Arguelles. Il metodo è semplice ma potente: ascolti un audio in inglese di madrelingua e lo ripeti immediatamente ad alta voce — come un'ombra che segue il parlante con un ritardo di solo 1–2 secondi. A differenza dell'ascolto passivo o degli esercizi di grammatica, lo shadowing costringe il tuo cervello e i muscoli della bocca a elaborare e riprodurre simultaneamente i modelli di discorso reale. La ricerca dimostra che migliora significativamente la precisione della pronuncia, l'intonazione, il ritmo, il discorso connesso, la comprensione dell'ascolto e la fluidità del parlato — rendendolo uno dei metodi più efficaci per la preparazione alla prova di speaking dell'IELTS e per la comunicazione reale in inglese.

Tecnica dello shadowing: leggi la guida completa passo dopo passo →