Prática de Shadowing: #1 Machine Learning Specialization [Course 1, Week 1, Lesson 1] - Aprenda a falar inglês com vídeo
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34 frases
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1
Welcome to machine learning.
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What is machine learning?
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You probably use it many times a day without even knowing it.
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Anytime you want to find out something like, how do I make a sushi roll?
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You can do a web search on Google, Bing, or Baidu to find out.
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And that works so well because their machine learning software has figured out how to rank web pages.
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Or when you upload pictures to instagram or snapchat
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and think to yourself i want to tag my friends so they can see their pictures
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well these apps can recognize your friends in your pictures
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and label them as well that's also machine learning or
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if you've just finished watching a star wars movie on a video streaming service
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and you think what other similar movies could i watch well
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the streaming service will likely use machine learning to recommend something
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that you might like each time you use voice to text
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on your phone to write a text message hey Andrew how's it going
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or tell your phone hey Siri play a song by Rihanna
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or ask your other phone okay Google show me Indian restaurants
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near me that's also machine learning each time you receive an
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email titled congratulations you've won a million dollars well maybe you're rich congratulations
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or more likely your email service will probably flag it as spam.
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That too is an application of machine learning.
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Beyond consumer applications that you might use, AI is also rapidly making its way into big companies and into industrial applications. For example,
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I'm deeply concerned about climate change and I'm glad to see
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that machine learning is already hoping to optimize wind turbine power a generation.
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Or in healthcare, it's starting to make its way into hospitals to help doctors make accurate diagnoses.
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For recently, at Learning AI, I've been doing a lot of work putting computer vision into factories to help inspect
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if something coming off the assembly line has any defects.
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That's machine learning.
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It's a science of getting computers to learn without being explicitly programmed.
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In this class, you learn about machine learning and get to implement machine learning in code yourself.
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Millions of others have taken the earlier version of this course, which is a course that led to the founding of Coursera,
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and many learners ended up building exciting machine learning systems or even pursuing very successful careers in AI.
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I'm excited that you're on this journey with me.
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Welcome, and let's get started.
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Vocabulário e dicas de fala para esta lição
Esta aula de conversação usa o vídeo “Machine Learning Specialization”. As palavras que mais se repetem: learning, machine, application, pictures. Este vídeo tem 34 frases e 418 palavras para praticar shadowing. A fala dura 2:38. O falante fala em ritmo natural, cerca de 158 palavras por minuto, próximo de uma conversa do dia a dia. 85% das palavras estão entre as 3.000 mais comuns do inglês; vale a pena estudar o restante antes de começar.
Vocabulário principal deste vídeo
15 palavras do vídeo que vale a pena aprender, com pronúncia e significado:
| Palavra | Pronúncia | Significado |
|---|---|---|
| congratulations | /kənˌɡɹæt͡ʃəˈleɪʃ(ə)nz/ | parabéns, congratulações |
| deeply advérbio | /ˈdi(ː)pli/ | profundamente |
| rank substantivo | /ˈɹæŋk/ | fileira, coluna |
| label substantivo | /ˈleɪ.bəl/ | etiqueta, rótulo |
| rapidly advérbio | /ˈɹæpɪdli/ | rapidamente |
| pursue verbo | /pɚˈsu/ | perseguir |
| diagnosis substantivo | /daɪəɡˈnəʊsɪs/ | diagnóstico |
| implement verbo | /ˈɪmpləmənt/ | implementar |
| anytime advérbio | qualquer hora | |
| spam substantivo | /spæm/ | spam, lixo eletrônico |
| upload verbo | /ˈʌpˌloʊd/ | carregar, fazer upload |
| explicitly advérbio | explicitamente | |
| defect substantivo | /ˈdiːfɛkt/ | defeito |
| sushi substantivo | /ˈsuːʃi/ | sushi |
| inspect verbo | /ɪnˈspɛkt/ | inspecionar |
Phrasal verbs que você vai ouvir
| Palavra | Significado |
|---|---|
| find out verbo | descobrir |
| end up verbo | terminar, acabar |
| figure out verbo | descobrir, deduzir |
Pronúncia para ficar de olho
O falante usa 8 contrações e formas reduzidas, como I'm, you're, you've. Diga-as na forma curta, do jeito que você ouve.
- Os sons de “sh” e “zh”: congratulations /kənˌɡɹæt͡ʃəˈleɪʃ(ə)nz/, sushi /ˈsuːʃi/
Sons difíceis para falantes de português:
- Consoante final — sem acrescentar um “i” depois: rank /ˈɹæŋk/, implement /ˈɪmpləmənt/, upload /ˈʌpˌloʊd/, defect /ˈdiːfɛkt/, inspect /ɪnˈspɛkt/
Como praticar com este vídeo
- Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
- Comece na velocidade 0,75×, faça shadowing frase por frase e volte à velocidade normal quando ficar fácil.
- Grave a sua voz e compare com o original, prestando atenção a palavras como congratulations, deeply, rank.
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.