Shadowing Practice: Cambridge 15 listening (Test-1) (Part-4) - Learn English Speaking with Video

Les maken...
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Part 4.
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You will hear a student giving a presentation about a type of tree known as the eucalyptus.
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which is common in Australia.
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First, You have some time to look at questions 31 to 40.
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Now listen carefully and answer questions 31 to 40.
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Today, I'm going to talk about the eucalyptus tree.
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This is a very common tree here in Australia, where it's also sometimes called the gum tree.
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First, I'm going to talk about why it's important.
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Then I'm going to describe some problems it faces at present.
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Right, well, the eucalyptus tree is an important tree for lots of reasons.
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For example, it gives shelter to creatures like birds and bats.
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And these and other species also depend on it for food, particularly the nectar from its flowers.
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So, it supports biodiversity.
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It's useful to us humans too because we can kill germs with a disinfectant made from oil extracted from eucalyptus leaves.
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The eucalyptus grows all over Australia, and the trees can live for up to 400 years.
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So, it's alarming that all across the country, numbers of eucalyptus are falling because the trees are dying off prematurely.
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So, what are the reasons for this?
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One possible reason is disease.
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As far back as the 1970s, the trees started getting a disease called mundula yellows.
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The tree's leaves would gradually turn yellow, then the tree would die.
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It wasn't until 2004 that they found the cause of the problem was lime,
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or calcium hydroxide, to give it its proper chemical name, which was being used in the construction of roads.
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The lime was being washed away into the ground and affecting the roots of the eucalyptus trees nearby.
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What it was doing was preventing the trees from sucking up the iron they needed for healthy growth.
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When this was injected back into the affected trees, they immediately recovered.
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But this problem only affected a relatively small number of trees.
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By 2000, huge numbers of eucalyptus were dying along Australia's east coast of a disease known as Bell Minor -associated dieback.
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The bell miner is a bird and the disease seems to be common where there are high populations of bell miners.
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Again, it's the leaves of the trees that are affected.
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What happens is that insects settle on the leaves and eat their way round them, destroying them as they go,
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and at the same time they secrete a solution which has sugar in it.
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Thank you.
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The bell miner birds really like this solution, and in order to get as much as possible,
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they keep away other creatures that might try to get it.
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So these birds and insects flourish at the expense of other species,
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and eventually so much damage is done to the leaves that the tree dies.
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But experts say that trees can start looking sick before any sign of bell minor -associated dieback.
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So it looks as if the problem might have another explanation.
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One possibility is that it's to do with the huge bushfires that we have in Australia.
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A theory proposed over 40 years ago by ecologist William Jackson is
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that the frequency of bushfires in a particular region affects the type of vegetation that grows there.
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If there are very frequent bushfires in a region, this encourages grass to grow afterwards,
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while if the bushfires are rather less frequent, this results in the growth of eucalyptus forests.
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So, why is this?
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Why do fairly frequent bushfires actually support the growth of eucalyptus?
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Well, one reason is that the fire stops the growth of other species which would consume water needed by eucalyptus trees. And there's another reason.
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If these other quick -growing species of bushes and plants are allowed to proliferate,
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they harm the eucalyptus in another way by affecting the composition of the soil and removing nutrients from it.
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So some bushfires are actually essential for the eucalyptus to survive,
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as long as they are not too frequent. In fact, there's evidence
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that Australia's indigenous people practised regular burning of bushland for thousands of years before the arrival of the Europeans.
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But since Europeans arrived on the continent, the number of bushfires has been strictly controlled.
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Now, scientists believe that this reduced frequency of bushfires to low levels has led to what's known as 'dry' rainforest,
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which seems an odd name as usually we associate tropical rainforest with wet conditions.
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And what's special about this type of rainforest?
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Well?
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Unlike tropical rainforest, which is a rich ecosystem, this type of ecosystem is usually a simple one.
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It has very thick, dense vegetation but not much variety of species.
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The vegetation provides lots of shade, so one species that does find it ideal is the bell -miner bird,
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which builds its nests in the undergrowth there.
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But again, that's not helpful for the eucalyptus tree.
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That is the end of part four.
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You now have one minute to check your answers to part four.
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Woordenschat en spreektips bij deze les

Deze video bevat 63 zinnen en 818 woorden om na te spreken. Het gesproken deel duurt 7:53. De spreker praat langzaam, ongeveer 104 woorden per minuut, zodat je tijd hebt om elke klank na te doen. 83% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden; de rest kun je beter vooraf bekijken.

Belangrijke woorden in deze video

15 woorden uit de video die het leren waard zijn, met uitspraak en betekenis:

WoordUitspraakBetekenis
leaf zelfstandig naamwoord/lif/blad
frequent bijvoeglijk naamwoord/ˈfɹiː.kwənt/veelvuldig, frequent
miner zelfstandig naamwoord/ˈmaɪnə(ɹ)/mijnwerker, kompel
vegetation zelfstandig naamwoord/ˌvɛd͡ʒəˈteɪʃən/vegetatie, begroeiing
frequency zelfstandig naamwoord/ˈfɹiːkwənsi/frequentie
lime zelfstandig naamwoord/laɪm/limoen, limoenenboom
ecosystem zelfstandig naamwoord/ˈikoʊˌsɪstəm/ecosysteem
insect zelfstandig naamwoord/ˈɪn.sɛkt/insect, kerfdier
harm zelfstandig naamwoord/hɑːm/schade
carefully bijwoord/ˈkɛɹf(ə)li/voorzichtig
thick bijvoeglijk naamwoord/θɪk/dik, dikke
wash werkwoord/wɑʃ/wassen, spoelen
encourage werkwoord/ɪnˈkʌɹ.ɪd͡ʒ/bemoedigen, aanmoedigen
arrival zelfstandig naamwoord/əˈɹaɪ.vl̩/komst, aankomst
explanation zelfstandig naamwoord/ˌɛkspləˈneɪʃən/verklaring, toelichting

Grammatica in deze video

De structuren die de spreker het meest gebruikt, met de exacte woorden uit de video:

StructuurIn de video
Lijdende vorm be + voltooid deelwoord — het gaat om wat er gebeurt, niet om wie het doetbeing washed · was injected · are affected
Betrekkelijke bijzinnen who / which + zin — extra informatie over een persoon of dingname, which was · solution which has · rainforest, which is
Present perfect have/has + voltooid deelwoord — iets uit het verleden dat nu nog telthas been · has led

Uitspraak om op te letten

De spreker gebruikt 4 samentrekkingen en verkorte vormen, zoals I'm, wasn't. Spreek ze kort uit, zoals je ze hoort.

  • De “th”-klanken: thick /θɪk/, undergrowth /ˈʌndɚˌɡɹoʊθ/
  • De klanken “sh” en “zh”: associate /əˈsoʊʃi.ət/, vegetation /ˌvɛd͡ʒəˈteɪʃən/, wash /wɑʃ/, explanation /ˌɛkspləˈneɪʃən/, composition /ˌkɑm.pəˈzɪʃ.ən/
  • Lange woorden — let op de klemtoon: associate /əˈsoʊʃi.ət/, vegetation /ˌvɛd͡ʒəˈteɪʃən/, ecosystem /ˈikoʊˌsɪstəm/, explanation /ˌɛkspləˈneɪʃən/, composition /ˌkɑm.pəˈzɪʃ.ən/

Zo oefen je met deze video

  1. Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
  2. Spreek zin voor zin na op normale snelheid en herhaal elke zin tot je ritme gelijk is aan dat van de spreker.
  3. Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als leaf, frequent, miner.

Wat is de Shadowing-techniek?

Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.

Shadowing-techniek: lees de volledige stap-voor-stap-gids →