跟读练习: Understanding COPD - 通过视频学习英语口语
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43 句
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Understanding Chronic Obstructive Pulmonary Disease Chronic obstructive pulmonary disease,
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or COPD, is a lung disease that makes it difficult to breathe.
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COPD is a long -term disease that often gets worse over time
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and is characterized by inflammation and severe limitation of airflow in and out of the lungs.
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COPD is an umbrella term used to describe a group of breathing conditions, the most common being chronic bronchitis and emphysema.
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Many people living with COPD may have both emphysema and chronic bronchitis.
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A few people have both asthma and COPD.
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Cigarette smoking is the leading cause of COPD.
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Long -term exposure to secondhand smoke or irritants such as air pollution, dust, or workplace fumes, and biomass exposure,
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such as wood smoke, can also contribute to COPD.
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An uncommon genetic disorder called alpha -1 antitrypsin deficiency is sometimes associated with COPD.
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Although respiratory infections such as influenza and pneumonia do not cause COPD, they can make people with COPD very sick.
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Therefore, it is very important to keep these vaccinations up to date.
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At first, COPD may cause no symptoms or only mild symptoms.
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As the disease progresses, common symptoms include shortness of breath, wheezing, and chest tightness, especially with exercise,
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and an ongoing cough, often with a lot of mucus.
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As COPD symptoms worsen, breathing requires much more energy, and it can get harder to exercise or do routine activities,
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like getting dressed or climbing stairs.
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This may lead to fatigue, weight loss, and muscle loss.
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People with COPD can experience a variety of symptoms.
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Different stages of COPD range from mild to moderate to severe.
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In normal functioning lungs, when air is inhaled, it travels down the windpipe and into the airways, or bronchial tubes of the lungs.
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Inside the lungs, the airways branch out into smaller and smaller tubes called bronchioles that are rich in blood supply.
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At the end of these tubes are billions of tiny air sacs called alveoli.
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Normally, the walls of the airways and air sacs are elastic and flexible in nature.
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Inhaling causes each air sac to fill with air.
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Exhaling causes each air sac to deflate.
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Efficient uptake of air into the lungs provides oxygen to the blood, which is then carried to all parts of the body.
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In COPD, however, the airways become thick and inflamed, and they produce more mucus than usual.
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This mucus can clog the airways and makes it hard to breathe.
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In COPD, the walls of the air sacs in the lungs are damaged and lose their elastic quality.
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The air sacs get floppy, broken, and lose their shape.
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As the air spaces get larger, air gets trapped, and there are fewer air sacs to supply oxygen to the blood.
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Because air is trapped in these air sacs, it is difficult for lungs with COPD to deflate like normal lungs.
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This trapped air makes it harder to get fresh air into the lungs and makes breathing more difficult.
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COPD is the third leading cause of death in the United States and affects more than 13 .5 million Americans.
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It is predominantly diagnosed in middle -aged individuals older than 40 years and is present in both women and men.
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Although COPD is more common in men, more women die from this disease each year than men.
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The rate of COPD continues to increase worldwide due to smoking and worsening air pollution.
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While there is no cure for COPD, you can take steps to feel better, stay more active, and slow disease progression.
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COPD can be managed by consulting early with your health care provider, seeking diagnosis and intervention therapies,
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and adopting lifestyle changes that include quitting smoking, pulmonary rehabilitation, healthy eating and exercise,
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and maintaining a positive outlook.
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本课的词汇与口语要点
这节口语课以视频“Understanding COPD”为素材。 视频中反复出现的词有：Copd, lung, sac, disease, airways。 这段视频共有 43 个句子、616 个单词可供跟读。 讲话部分时长为 4:29。 说话人语速平稳，每分钟约 138 个词，很适合跟读。 只有 72% 的单词属于英语最常用的 3,000 词，词汇难度较高。
视频中的重点词汇
视频中 15 个值得学习的单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| lung 名词 | /ˈlʌŋ/ | физы, 肺 |
| breathe 动词 | /bɹiːð/ | 呼吸, 吸 |
| symptom 名词 | /ˈsɪm(p)təm/ | 症狀 /症状, 病徵 /病征 |
| chronic 形容词 | /ˈkɹɑ.nɪk/ | 慢性 |
| tube 名词 | /tuːb/ | 筒 |
| trap 名词 | /tɹæp/ | 陷阱, 圈套 |
| oxygen 名词 | /ˈɑksɪd͡ʒən/ | 氧 |
| pollution 名词 | /pəˈluʃən/ | 污染 |
| mild 形容词 | /ˈmaɪld/ | 溫和的, 温和的 |
| elastic 形容词 | /ə-/ | 彈性的 /弹性的, 有彈力的 /有弹力的 |
| thick 形容词 | /θɪk/ | ху, 厚 |
| muscle 名词 | /ˈmʌs.əl/ | 肌肉, 筋肉 |
| efficient 形容词 | /ɪˈfɪʃənt/ | 高效率 |
| dust 名词 | /dʌst/ | чынтў, хуэйтў |
| associate 名词 | /əˈsoʊʃi.ət/ | 同行, 同事 |
需要注意的发音
- “th” 音: breathe /bɹiːð/, thick /θɪk/
- “sh” 和 “zh” 音: exposure /ɪkˈspəʊ.ʒə(ɹ)/, pollution /pəˈluʃən/, efficient /ɪˈfɪʃənt/, associate /əˈsoʊʃi.ət/, infection /ɪnˈfɛkʃən/
- 长单词——注意重音位置: associate /əˈsoʊʃi.ət/, intervention /ɪntɚˈvɛnʃən/, rehabilitation /ˌɹiː.əˌbɪl.ɪˈteɪ.ʃən/, respiratory /ɹɪˈspɪ.ɹət.ə.ɹi/, predominantly /pɹɪˈdɒmɪnəntli/
中文母语者容易读错的音：
- /v/ — 不要读成 /w/，上齿轻触下唇: intervention /ɪntɚˈvɛnʃən/, provider /pɹəˈvaɪ.də(ɹ)/, vaccination /ˌvæk.sɪˈneɪ.ʃən/, obstructive /əbˈstɹʌk.tɪv/, alveolus /ælˈvi.əl.əs/
- 词尾辅音 — 要读清楚，后面不要加元音: sac /sæk/, chronic /ˈkɹɑ.nɪk/, tube /tuːb/, trap /tɹæp/, mild /ˈmaɪld/
- /r/ 和 /l/ 的区别: rehabilitation /ˌɹiː.əˌbɪl.ɪˈteɪ.ʃən/, umbrella /ʌmˈbɹɛl.ə/, predominantly /pɹɪˈdɒmɪnəntli/, pulmonary /ˈpʌl.məˌnɛ.ɹi/, bronchial /ˈbɹɑːn.ki.əl/
如何用这段视频练习
- 先完整听一遍视频，不要开口，记下不认识的单词。
- 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
- 录下自己的声音并与原声对比，特别注意 lung, breathe, symptom 这类单词。
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。