Pratica di Shadowing: Why are some animals black and white? ⏲️ 6 Minute English - Impara a parlare inglese con YouTube

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6 Minute English from BBC Learning English.
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6 Minute English from BBC Learning English.
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Hello, this is 6 Minute English from BBC Learning English.
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I'm Neil.
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And I'm Becca.
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Neil, what do the following animals have in common?
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Zebras, giant pandas and magpies.
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That's pretty easy, Becca.
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They're all black and white.
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Right.
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But do you know why these animals evolved to be black and white?
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Mmm, I'm not so sure.
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Probably something about survival.
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That's usually the answer, isn't it?
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It is.
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The animal world is full of colour,
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shiny blue peacocks and bright green frogs.
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But in fact, hundreds of animal species are black and white.
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In this episode, we'll try to find out why,
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while also learning some useful new words and phrases.
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And remember, all the vocabulary from this episode is available on our website, bbclearningenglish.com.
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OK, time for a question for you, Becca.
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According to one theory, some animals are black and white to warn potential predators that they're dangerous or they taste bad.
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But what is the scientific term for this?
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Is it a camouflage, b mimicry or c aposomatism?
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Well, Neil, I'm going to go with c just because I've never heard of that word before.
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OK, I like...
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I like your style.
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Some scientists think zebra's distinctive black and white stripes prevent bites from flies and other insects.
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Zoologist Dr Martin Howe tested this theory by covering horses,
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a close relative of the zebra, in stripes.
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Here Martin discusses his experiment with Caroline Steele from BBC World Service programme CrowdScience.
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Do we know what it is about the stripes that's putting them off?
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Is it somehow like visually confusing?
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We originally set out to test whether maybe there were these optical illusions at play.
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So we did a whole bunch of tests where we tried different patterns of rugs,
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but it turned out that practically every high contrast pattern,
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every black and white pattern we used,
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almost every pattern was really effective at stopping flies.
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Martin conducted a whole bunch of,
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meaning a lot of, tests using different colours and patterns.
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Black and white stripes created an optical illusion – a visual trick
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that makes your eyes see things differently from how they really are.
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As a result, the flies were put off.
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They lost interest and didn't bite.
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So zebras' stripes confuse insects,
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telling them to look elsewhere for food.
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But are there other reasons animals are black and white?
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Nobody who's seen giant pandas in a zoo would find them hard to spot.
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Against a grassy background they stand out easily.
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But seen from a distance in the snowy mountain forest where they live,
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black and white makes the perfect disguise.
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Here's Professor Tim Caro, a world authority on animal behaviour,
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explaining more to Caroline Steele for BBC World Service's CrowdScience.
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The giveaway for me was 15 photos of giant pandas taken either fairly close up or at a distance.
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And in two of those photos,
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I was unable to see anything in the picture other than rocks and snow.
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And then later on, I realised that,
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in fact, there was a giant panda in the centre of that picture some distance away.
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Immediately that clicked in my mind.
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The pandas were so well camouflaged,
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Tim couldn't spot them in the photos.
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That's when something clicked in his mind – a phrase used when you suddenly understand something after trying for a long time.
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Tim understood that pandas use colour to hide.
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He calls this a giveaway – something that makes it easy for people to discover something secret or unknown.
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So, are animals black and white to repel insects, like zebras?
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Or for camouflage, like pandas?
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Let's give the final word to Hannah Rowland,
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a researcher into another black and white animal – penguins.
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Really, science never has a black and white answer.
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Excuse the pun, with penguins being black and white.
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It's often a very complex mixture of reasons.
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The answer to why animals are black and white is not black and white.
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A situation described as black and white means one where it's easy to understand what's right and wrong.
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In fact, there's no one reason why animals are black and white.
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Zebras avoid bites, pandas hide from predators,
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and some animals, like skunks,
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warn other animals they're dangerous.
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It all depends on the specific animal.
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And talking of skunks reminds me of my question, Becca.
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According to one theory, some animals are black and white to warn potential predators they're dangerous or taste bad.
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But what is the scientific term?
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And I chose C, aposomatism,
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because I'd never heard of it before.
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Well, that's a great way of choosing.
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And it's done well for you because you're correct.
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Woohoo!
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OK, let's recap the vocabulary we've learned,
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starting with optical illusion, a visual trick where your eyes perceive things differently from how they really are.
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A whole bunch of something means a lot of something.
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If something puts you off,
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it causes you to dislike it or lose interest.
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A giveaway is something that makes it easy for people to discover something secret or unknown.
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The phrase, something clicked in my mind,
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is used when you suddenly understand something at last.
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And finally, if you describe something as black and white,
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you mean it's easy to understand what is right and wrong.
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Once again, our six minutes are up!
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But head over to our website,
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bbclearningenglish.com, for a quiz and worksheet for this episode.
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See you there soon, but for now it's goodbye.
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Goodbye!

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Contesto e sfondo

Il video "Why are some animals black and white?" di BBC Learning English presenta una conversazione tra Neil e Becca riguardo gli animali che mostrano colori distintivi come il nero e il bianco. Durante il dialogo, i due discutono le ragioni evolutive di questa colorazione, collegandola alla sopravvivenza e ad altre strategie di adattamento degli animali. In particolare, gli zebre, i panda giganti e le gazze vengono esplorati come esempi di come i colori possano influenzare le interazioni tra specie. Questo scambio non solo offre contenuti interessanti sulla biologia degli animali, ma introduce anche vocaboli e frasi utili per chi sta imparando l'inglese.

Le 5 frasi principali per la comunicazione quotidiana

  • What do the following animals have in common? - Cosa hanno in comune i seguenti animali?
  • They're all black and white. - Sono tutti neri e bianchi.
  • Probably something about survival. - Probabilmente qualcosa riguardo la sopravvivenza.
  • Do we know what it is about the stripes that's putting them off? - Sappiamo cosa c'è nelle strisce che li allontana?
  • Is it somehow like visually confusing? - È in qualche modo confondente dal punto di vista visivo?

Guida passo-passo per lo shadowing

Per affrontare questo video in modo efficace e migliorare la tua pratica di conversazione in inglese, segui questi passaggi specifici:

  1. Ascolta attentamente il dialogo: Inizia ascoltando il video senza sottotitoli. Concentrati sui suoni e sulle intonazioni di Neil e Becca.
  2. Riproduci il video a velocità ridotta: Utilizza una funzione di ralentamento se disponibile. Questo ti aiuterà a cogliere meglio le parole e le espressioni.
  3. Pratica lo shadow speak: Mentre ascolti, inizia a ripetere le frasi subito dopo averle sentite. Cerca di imitare l’intonazione e il ritmo.
  4. Fai una pausa per riflettere: Dopo aver ripetuto una serie di frasi, prendi un momento per riflettere sul significato e prova a usarle in contesti diversi nella tua vita quotidiana.
  5. Riascolta e ripeti: Dopo aver completato una prima sessione di shadowing, riascolta il video e ripeti nuovamente le frasi. Confronta la tua pronuncia e intonazione con quella degli speaker.

Seguendo questa guida, non solo migliorerai la tua pronuncia e comprensione orale, ma potrai anche applicare nuove frasi nella tua pratica di conversazione in inglese. Approfitta dei video su YouTube per rendere l'apprendimento dell’inglese più interessante e interattivo, utilizzando approcci come lo shadowing per assorbire meglio la lingua.

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.

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