跟读练习: Want to Lose Weight? Try Counting Calories - 通过YouTube学习英语口语
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This is the VOA Special English Health Report.
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This is the VOA Special English Health Report.
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How many calories we eat appears to be more important than what we eat when we eat too much.
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That was the finding of a new study that should be satisfying to anyone who counts calories for weight control.
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More than one billion adults are overweight.
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The World Health Organization calls obesity a global epidemic.
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Government researchers have just reported their latest estimates for the United States.
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The good news, obesity rates have not increased much in recent years.
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The bad news, they have not decreased either.
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More than one-third of adults were obese in 2009 and 2010.
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Anyone who has ever tried to lose weight knows there are all kinds of conflicting diet plans.
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Some tell people not to eat carbohydrates.
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Others say not to eat fats.
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Still others say to eat more protein or to eat less protein.
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Dr. George Bray at the Pennington Biomedical Research Center in Louisiana led the new study.
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He wanted to know if protein affects weight gain.
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Twenty-five healthy adults were in the study.
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They were overfed by almost a thousand calories a day over an eight-week period.
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in food are a measure of energy.
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The people followed diets with low,
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normal or high levels of protein.
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Normal was defined as 15% of energy from protein.
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Dr. Bray says all of them gained weight.
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Fat storage was exactly the same with all three levels of protein.
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It was the calories that they ate that affected the body fat that that they stored.
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Those who ate a higher percentage of protein gained more lean body mass.
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Dr. Bray says the opposite happened on a low protein diet.
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If your protein intakes low,
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you'll actually lose body mass even though you're eating an excess amount of calories.
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He tells his patients to weigh themselves regularly so they can know quickly if they gain weight.
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His study appeared in the Journal of the American Medical Association.
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Dr. Dariush Mozaffarian at the Harvard School of Public Health studies the relationship between diet and conditions like heart disease and diabetes.
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He says, we don't need to go down a list of avoid this,
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avoid that, become, you know, food police.
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really actually mostly foods that should be increased.
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It's fruits, vegetables, whole grains,
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fish, vegetable oils and nuts.
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He says increasing these six foods by about one serving each day would reduce obesity
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and help slow the epidemic of obesity-related diseases.
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For VOA Special English, I'm Alex Villarreal.
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You can find a video about the study at voaspecialenglish.com.
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为什么要通过这个视频练习口语？
练习口语是提高英语能力的重要环节。通过观看和模仿该视频中的内容，学习者可以掌握与减肥和营养相关的英语词汇和表达。在这个视频中，讲述者探讨了卡路里摄入与体重控制之间的关系。这样的话题不仅与日常生活密切相关，还能帮助学习者在日常交流中更流利地表达相关观点。结合英语影子跟读的技巧，学习者可以通过模仿讲述者的语调和节奏，增强自己的口语能力。
语法与表达在上下文中的运用
在视频中，讲述者使用了一些关键的语法结构和表达方式，以下是几个重要的例子：
- 进行时态：例如“are overweight”，用于描述当前状态，无形中强调了问题的紧迫性。
- 被动语态：如“obesity rates have not increased”，突出事件的影响，强调对比重要信息。
- 条件句：如“If your protein intake is low, you’ll actually lose body mass”，表明不同条件下的结果，帮助学习者理解因果关系。
这些语法结构的运用，使语言更具逻辑性，对于希望提高雅思口语的学习者而言，这些表达方式是必不可少的，雅思口语练习中也常会用到。
常见发音陷阱
在视频中，有几个词汇和短语可能对学习者产生发音困扰：
- calories：这个词常被发音不清，确保重音在第一个音节上。
- epidemic：注意字母“d”的清晰发音，这是一个较复杂的音节。
- protein：这个词的发音中，双音节的特点可能让部分学习者感到困惑.
通过学习这些发音，学习者可以提高他们的口语流利度，使他们在进行英语口语练习时更加自信。此外，使用shadow speech的技巧，可以帮助学生更自然地掌握这些词汇的发音。
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。