Prática de Shadowing: IELTS listening part 3 Product development presentation: mosquito net - Aprenda a falar inglês com vídeo

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Part 3.
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You will hear a business studies student called Edward talking to his tutor about some research he is doing on product development.
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First, you have some time to look at questions 21 to 25.
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Now listen carefully and answer questions 21 to 25.
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Hello, Edward.
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Sit down.
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Thanks.
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I need some advice on my presentation about product development.
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Right.
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Have you decided what to focus on?
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Yes.
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The product I've chosen is a particular type of mosquito net.
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Any reason for choosing that?
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Hmm.
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I spent last summer travelling round Africa with a friend.
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He's studying medicine, so when we were in a region where mosquitoes cause malaria, we visited a medical centre.
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I chatted to an administrator while my friend talked to one of the doctors,
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and I found out they've had far fewer cases of malaria since these mosquito nets became available locally.
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That made me interested in them.
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Hmm, OK.
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Mosquito nets have quite a long history, don't they?
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I believe they'd been used in Japan for centuries.
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That's right.
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Though apparently Queen Cleopatra slept under one in ancient Egypt.
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That was probably where they were invented.
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And much later nets were used in China, so perhaps they were invented there independently.
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Originally they were made of silk, but later cotton was used, and nowadays they're mainly synthetic.
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It wasn't until the middle of the 20th century that they developed nets treated with insecticides for use by the military, and that was a major step forward.
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They used an insecticide called DDT, but it was later found that this could be harmful to people as well as mosquitoes.
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Is that still a problem with modern nets?
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Oh, no. The chemicals used nowadays are safe, even if people sleep under them every night.
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And the nets work, and they're odour-free.
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But they have to be treated fairly often with the chemical, which the owners need to do themselves.
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Hmm.
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Presumably distribution of the chemical can be a problem in remote areas?
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I mean, people may not be able to get hold of it easily.
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That's right.
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Hmm.
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OK, tell me about this net you're going to talk about.
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Well, the brand name is Olliset, and the product was invented by a Japanese company.
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These nets are an improvement on the alternatives because the insecticide is contained inside the fibre and released gradually.
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It's not coated on the outside as with ordinary nets.
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So the chemicals don't have to be replaced?
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Right.
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And Oli-set nets are also tougher and don't tear as easily.
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They give protection for at least five years compared with a year or two for other nets.
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Well, it sounds interesting.
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But for your seminar presentation, will you provide the bigger picture as well?
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Yes.
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It'll be a case study of product development.
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Before you hear the rest of the discussion, you have some time to look at questions 26 to 30.
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Now listen and answer questions 26 to 30.
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I thought I'd introduce my presentation by describing the background to the new product, the general context.
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You mean the business context?
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Where the investment's coming from and that sort of thing?
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Well, I was thinking I'd talk first about insect-borne diseases, particularly malaria
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and why there's such an urgent need for new ways of fighting it.
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Some people might not know much about it.
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Yes, that's a good idea.
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I've got some statistics about the numbers of people worldwide who get the disease each year.
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I thought I'd show those.
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They're quite staggering.
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I can imagine.
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It's one of the world's biggest health problems, after all.
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It'd also be useful if you could find some statistical information on how malaria affects countries' economic output and present that too.
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OK, I'm sure I can find something.
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After that, I'll talk about mosquito nets.
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First, the historical development, just briefly, and then I'll introduce the Ollyset mosquito net.
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Yes, keep it simple.
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You could just present a bulleted list of its characteristics, the things that make it different from other types of net, and talk that through.
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Right.
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Then I thought I'd outline the production process.
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Fine.
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Should I give some information about where the money for the project has come from?
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There are lots of government and private sponsors.
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Definitely.
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That's a very important aspect of any product development.
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Where are the nets being manufactured, by the way?
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Oh, over half are made in Tanzania by a company called A-Z.
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They got an interest-free loan to buy in the necessary machinery.
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Well, I'd say a bit about the company profile as well, and then present figures about numbers of staff and the kinds of people they're employing on the Ollyset project,
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if you can find the details.
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Hmm, OK.
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I haven't included any information about marketing.
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I've got a lot of notes about it, but I'm not sure how to present them.
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I wouldn't mention that if I were you.
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You've only got a short time for your presentation and you've got quite a lot of material here already.
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But you should provide some figures about output.
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Have you found out from the company's website how many nets they actually produce?
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Yes, it's over 30 million a year.
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Right.
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Then I'm not sure how to finish off.
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What do you think about including something on potential...
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That is the end of part three.
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You now have 30 seconds to check your answers to part three.
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Thank you.

O Cenário: Desenvolvimento de Produtos e a Rede de Mosquito

O vídeo traz um diálogo realístico entre um aluno de negócios, Edward, e sua tutora, focando em uma apresentação sobre o desenvolvimento de uma rede de mosquito inovadora. Essa situação reflete contextos acadêmicos e profissionais, perfeita para quem quer praticar conversação em inglês com temas práticos. Ao ouvir, você aprende não só sobre o produto, mas também sobre como expor ideias, fazer perguntas e compartilhar conhecimentos — habilidades essenciais para o IELTS e para a vida real!

Trechos Úteis e Colocações para Memorizar

  • "Need some advice on": Expressar a necessidade de orientação. Exemplo: "I need some advice on my presentation." (Preciso de conselhos sobre minha apresentação.)
  • "Major step forward": Avanço significativo. Exemplo: "That was a major step forward in product development." (Foi um avanço significativo no desenvolvimento de produtos.)
  • "Get hold of": Conseguir acesso a algo. Exemplo: "People may not be able to get hold of the chemical." (As pessoas podem não conseguir acesso ao produto químico.)
  • "Case study": Estudo de caso. Exemplo: "It'll be a case study of product development." (Será um estudo de caso sobre desenvolvimento de produtos.)
  • "Treated with insecticides": Tratado com inseticidas. Exemplo: "Nets treated with insecticides are more effective." (Redes tratadas com inseticidas são mais eficazes.)

Seu Desafio de Shadowing: Aprenda Pronúncia e Intonação

Agora é hora de praticar o shadowing em inglês — uma técnica poderosa para melhorar a pronúncia e a fluência! Escolha um trecho curto do diálogo (como a parte onde Edward explica a invenção da rede Olliset) e siga estes passos: 1) Ouça o trecho uma vez para entender o contexto. 2) Repita imediatamente após o falante, copiando a intonação e o ritmo. 3) Faça isso 3-5 vezes até sentir que está fluindo. Essa prática, chamada também de shadowspeak, ajuda a treinar o cérebro a processar o inglês de forma mais natural. Você vai notar uma diferença rápida na sua capacidade de falar com confiança! Lembre: a chave é a consistência — mesmo 5 minutos por dia já faz diferença no seu progresso.

Esses trechos e o desafio de shadowing são excelentes para aprimorar sua prática de conversação em inglês. Continue praticando e veja como sua pronúncia e fluência melhoram a cada dia!

Gramática neste vídeo

As estruturas que o falante mais usa, com as palavras exatas do vídeo:

EstruturaNo vídeo
Voz passiva be + particípio passado — o foco está no que acontece, não em quem fazwere invented · were made · be treated
Present perfect have/has + particípio passado — uma ação passada que ainda importa agoraI've chosen · has come · haven't included

O que é a Técnica de Shadowing?

Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.

Técnica de shadowing: leia o guia completo passo a passo →