Pratica di Shadowing: Cambridge 10 Test 4 Section 4 Listening - Impara a parlare inglese con i 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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Vocabolario e note di pronuncia per questa lezione
Questa lezione di conversazione si basa sul video “Cambridge 10 Test 4 Section 4 Listening”. Le parole che ritornano più spesso: nanotechnology, science, technology, nanorobots, atoms. Questo video contiene 57 frasi e 753 parole da ripetere con lo shadowing. Il parlato dura 7:23. Chi parla lo fa lentamente, circa 102 parole al minuto, quindi c’è tempo per imitare ogni suono. Il 82% delle parole rientra nelle 3.000 più comuni dell’inglese; conviene studiare le altre prima di iniziare.
Vocaboli chiave di questo video
15 parole del video che vale la pena imparare, con pronuncia e significato:
| Parola | Pronuncia | Significato |
|---|---|---|
| atom sostantivo | /ˈætəm/ | atomo |
| implication sostantivo | /ˌɪmpləˈkeɪʃən/ | implicazione, risvolto |
| hungry aggettivo | /ˈhʌŋ.ɡɹi/ | affamato, avere fame |
| scientist sostantivo | /ˈsaɪəntəst/ | scienziato, scienziata |
| capability sostantivo | /ˌkeɪ.pəˈbɪl.ɪ.ti/ | capacità, possibilità |
| replicate verbo | /ˈɹɛplɪkeɪt/ | replicare |
| temporary aggettivo | /ˈtɛmp(əˌɹ)ɛɹi/ | temporaneo |
| discovery sostantivo | /dɪˈskʌv.ɹi/ | scoperta, scoprimento |
| fiction sostantivo | /ˈfɪkʃən/ | finzione |
| label sostantivo | /ˈleɪ.bəl/ | etichetta |
| ordinary aggettivo | /ˈɔɹdɪnɛɹi/ | ordinario, ordinaria |
| layer sostantivo | /ˈleɪ̯ɚ/ | strato |
| sheet sostantivo | /ʃit/ | foglio |
| disaster sostantivo | /dɪˈzɑːs.təː/ | disastro |
| potentially avverbio | /pəˈtɛnʃ(ə)li/ | potenzialmente |
I phrasal verb che sentirai
| Parola | Significato |
|---|---|
| open up verbo | aprire |
| take over verbo | usurpare |
La grammatica di questo video
Le strutture che chi parla usa di più, con le parole esatte del video:
| Struttura | Nel video |
|---|---|
| Forma passiva be + participio passato — conta ciò che accade, non chi lo fa | be treated · be taken · could be programmed |
| Present perfect have/has + participio passato — un’azione passata che conta ancora adesso | have raised · have called |
Pronuncia a cui fare attenzione
Chi parla usa 10 contrazioni e forme ridotte, come I'm, we'll, can't. Pronunciale nella forma breve, così come le senti.
- I suoni “th”: withdrawal /wɪðˈdɹɔ(ə)l/, breakthrough /ˈbɹeɪk.θɹuː/, lengthen /ˈlɛŋθən/, teethe /tiːð/, unethical /ʌnˈɛθɪkəl/
- I suoni “sh” e “zh”: implication /ˌɪmpləˈkeɪʃən/, fiction /ˈfɪkʃən/, sheet /ʃit/, potentially /pəˈtɛnʃ(ə)li/, innovation /ˌɪn.əˈveɪ.ʃən/
- Parole lunghe — attenzione all’accento: implication /ˌɪmpləˈkeɪʃən/, capability /ˌkeɪ.pəˈbɪl.ɪ.ti/, temporary /ˈtɛmp(əˌɹ)ɛɹi/, ordinary /ˈɔɹdɪnɛɹi/, potentially /pəˈtɛnʃ(ə)li/
I suoni difficili per chi parla italiano:
- /h/ — va soffiata, non è muta: hungry /ˈhʌŋ.ɡɹi/, harness /ˈhɑɹ.nəs/
- Consonante finale — senza aggiungere una vocale dopo: scientist /ˈsaɪəntəst/, replicate /ˈɹɛplɪkeɪt/, sheet /ʃit/, enormous /ɪˈnɔː.məs/, generate /ˈd͡ʒɛn.ə.ɹeɪt/
- /æ/ — più aperta della “e”: atom /ˈætəm/, laboratory /ˈlæb(ə)ɹəˌtɔɹi/, advancement /ædˈvæns.mənt/, famine /ˈfæm.ɪn/, nanotechnology /ˌnænoʊtɛkˈnɑləd͡ʒi/
Come esercitarsi con questo video
- Ascolta tutto il video una volta senza parlare e annota le parole che non conosci.
- Fai shadowing frase per frase a velocità normale, ripetendo ognuna finché il tuo ritmo coincide con quello di chi parla.
- Registrati e confronta con l’originale, facendo attenzione a parole come atom, implication, hungry.
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.