第三篇Unit 2 Healthy eating

Using LanguageHOW AN UNBALANCED DIET CAN AFFECT YOUR HEALTH Wang Peng went to the library, where he happened to meet an expert on diets. He asked him for help。

WP = Wang Peng E = ExpertListen again and fill in the blanks.WP：Hello。

Can you help me, please？I want to find out more about balanced diets.E：Of course。

A balanced diet needs energy food like rice and noodles, body-building food like fish and meat for protein and fat，and protective food like fruit and vegetables for fibre and vitamins.WP：Yes, but does it matter how much rice, noodles and sugar I eat？E: Yes. If you eat too much，you may become obese。

This means you are too fat and it may lead to other illnesses. However, if you don’t eat enough rice，noodles o r sugar, you’ll get tired easily。

WP：I see. I’ll be careful about that. Does it matter how much fish, meat or cheese I eat？E: Too much can also make you fat, but if you don’t eat enough，your bones won't grow strong. A long time ago, children who didn’t eat enough vitamin D and body—building food didn’t grow straight legs。

【本讲教育信息】一、教学内容必修3 Unit 2 Healthy eating（一）重点单词（二）重点短语（三）重点句型二、知识精讲（一）重点单词1. diet1) n. 日常饮食、食物Proper diet and exercise are both important for health.适当的饮食和锻炼对健康都很重要。

The doctor advised him to go on a diet to lose weight.医生建议他节食减肥。

No sugar in my coffee please. I am on a diet.请不要给我的咖啡放糖，我在节食。

2）vi. 节食；实施节食疗法Do you think it necessary for me to diet?你认为我有必要节食吗？She’s always dieting but she never seems to lose any weig ht.她总是在节食，但体重好像并未减少。

2. balance1) vt. 平衡；权衡Try to balance your diet by eating more fruit and less protein.多吃些水果, 少摄入些蛋白质, 使饮食均衡合理。

You have to balance the advantages of living in the country against the disadvantages.你得权衡一下住在乡下的好处和坏处。

2) n. 天平，平衡；余额，余数Try to achieve a better balance between work and play.争取把工作和娱乐更好地结合起来。

I must check my bank balance.我要核对一下我在银行的余额。

Athletes need a good sense of balance.运动员要有良好的平衡感。

Book3 unit2 Healthy eatingPart BPart1 考纲词汇1. n. 天平，余额v. 平衡；权衡2 vt油煎3 vt变细；苗条的adj4女主人，女主持人n5好奇心n adj. 好奇的adv. 好奇地6生的，未加工的adj7 醋n8谎言，说谎n9折扣n10顾客，消费者n11 缺点，虚弱n adj.虚弱的v.(使)变弱，(使)减弱12强项，力量nvt. 加强，巩固___ 13咨询，商量vt14 sign n. _________________15 叹息；叹气n. vi. ___________ 16窥视；间谍n.v17限制；界限n.vt有限的adj. _____________18 利益；有益于n.vadj. 有益的19. n.糖vt.在……中加糖__ 20消化；摘要v. n.文摘21 lemon ___________22 cooperation _________23联合v24 n.日常饮食vi.节食_________Part 2.重点短语1被放过，做坏事不受惩罚2说谎3赢回，重新获得4谋生5怒目而视6暗中监视，侦查7不久以后8增加体重9减肥10节食11对----厌倦12 由于…感到劳累13为----而惊诧14对…进行研究15保持平衡饮食___________保持生态平衡失去平衡保持平衡16 缩减开支_______________17负债累累_______________18 还清债务_______________19得益于_______________20对...感到好奇____________21出于好奇____________22丧失信心，泄气_______________ 23 对..加以限制____________Part3．必背句式：1. (再也没有比这更好吃的了) “_______________________________.”he thought.2. He could not _______________________________(让永慧骗人们却不受惩罚) telling people lies!3. Wang Peng sat in the empty classroom ______________________(感到沮丧).4.___________________________________________(好奇心驱使王鹏走了进去).5. （那问题一定严重了）if Li Chang was not coming to eat in his restaurant as he always did.Part C课内探究Part1 重点词汇突破1. benefit vt. 有益于vi. 得益于（常与from连用）n. 利益，好处；津贴观察思考：The new hospital will be a great benefit to the town.This dictionary will be of great benefit to me.The rain benefits the plants. = The plants benefit from the rain.[重点用法归纳]benefit sb./sth. 对…有益benefit from 从……中受益be of great benefit to = be very beneficial to 对……有益for the benefit of = for sb’ s benefit为了……的利益即学即练：1) The new traffic regulation will _________________________(v)使全城受益.2) The new regulations will_____________________________(n.)(对我们很有利) .3）为了残疾人的利益成立了这个组织。

Making your diet work for youDOES your mom always nag (唠叨) you about how you should eat more vegetables and less meat?It might seem annoying (恼人的) that you can‘t eat whatever you want, but you‘d probably agree with her if you knew how many problems e ating unhealthy food can cause.According to China News, in 2010, more than 30 percent of Chinese people older than 18 were overweight. Meanwhile, about 260 million people were suffering from diseases such as high blood pressure and diabetes (糖尿病).―These majo r public health risk factors (因素) are closely associated (关联) with food consumption,‖ said Yang Yuexin, a researcher at the National Institute for Nutrition and Food Safety.This is why the Chinese government released a set of guidelines on Feb 10 to promote a healthy diet, reported Xinhua News Agency.The guidelines set goals for how much of each kind of food we should be eating by 2020. For example, you should be eating only 29 kilograms of meat every year, while eggs should account for 16 kilograms and dairy products (奶制品) 36 kilograms.―The guidelines aim to help guarantee (保证) the supply of quality food and improve people‘s nutrition (营养),‖ said Wang Dongyang, de puty director of the institute.So what exactly should your daily diet be like in 2020? Generally, you should have two and a half bowls of rice, an egg, a glass of milk, meat that is roughly the weight of one-and-a-half eggs and a piece of fruit.Longer lifetimesSTAYING young forever might only be possible in fiction. Still, we all want to live long, healthy lives. Have you ever wondered how long the average person lives? According to a report released by the World Health Organization on May 15, the global average life expectancy (预期寿命) reached 70 years in 2011. Japan ranked the top in terms of average life expectancy for both sexes, tying People in theυwith Switzerland and San Marino, a republic surrounded by Italy. three countries lived to an average age of 83.The report says that the average Chinese life expectancy reached 76, ranking the 59th, thanks to economic growth and improved medical services in the country.So are there any secrets to the long life spans (寿命) of the top three countries? Maybe the health care systems, low levels of inequality (不平等) and generally better diets offer some explanations, The Huffington Post commented.Take Japan for example. The world‘s third biggest economy is wealthy enough to provide a good health care system. It offers free screening examinations (筛查) for certain diseases, infectious (传染的) disease control and prenatal (产前的) care. Payments (付款) for personal medical services are offered by a universal health insurance (保险) system, with equal access for all.High life expectancy in Japan is also the result of healthier diets. Fat accounts for less than 20 percent of the calories in the Japanese diet, while it accounts for nearly 40 percent of the The Japanese have also traditionally eaten lots of oily fish,ϖAmerican diet. which reduces their chance of suffering strokes (中风) and developing breast cancer.Besides, Shokuiku – teaching the importance of healthy eating – is stressed in primary and middle school classrooms. It recommends 30 different types of food, with an emphasis on eating fruits and vegetables each day.San Marino‘s long life expectancy is due to its people‘s Mediterranean diet, which is also listed as a UNESCO cultural heritage. This diet is based on freshfruits and vegetables, fish and other white meat, olive oil and whole grains. It is full of rich flavors (味道) but also low in fat. The diet can reduce people‘s risk of heart disease and high blood pressure.Alongside a healthy diet, being active is another important factor (因素) in living a longer life, as we can see from the example of Switzerland. The country‘s Federal Statistics Office said the explanation for its people‘s high life expectancy is simple: ―There have been improvements in [disease] prevention (预防) efforts. Practicing sport has also become widespread, so the population has been very active for a long time.‖Lose bad habits, gain timeFOUR common bad habits all together – smoking, drinking too much, not enough exercise and poor diet – can age you by 12 years, new research suggests.The findings are from a study that followed nearly 5,000 British adults for 20 years. They provide an even better reason for living a healthy lifestyle. Overall, the 314 people studied had all four unhealthy behaviors. Among them, 91, or 29 percent, died during the study. Among the 387 healthiest people with none of the four habits, only 32, or about 8 percent, died.The risky (有风险的) behaviors were: smoking; taking more than three alcoholic (酒精的) drinks a day for men and more than two daily for women; getting less than two hours of exercise a week; and eating fruits and vegetables fewer than three times daily.These habits put together increased the risk of death and made people seem 12 years older than people in the healthiest group, said lead researcher Elisabeth Kvaavik of the University of Oslo, Norway.The healthiest group included never-smokers and those who had quit; teetotalers, women who had fewer than two drinks daily and men who hadfewer than three; those who got at least two hours of exercise weekly; and those who ate fruits and vegetables at least three times daily.―You don‘t need to be extreme (极端的)‖ to be in the healthy group, Kvaavik said. ―These behaviors add up, so together it‘s quite good. It should be possible for most peop le to manage to do it.‖For example, one carrot, one apple and a glass of orange juice would be enough for the fruit and vegetable requirement (要求) in the study, Kvaavik said. He pointed out that the amounts are pretty modest and less strict than many guidelines.The US government recommends (建议) at least four cups of fruits or vegetables daily for adults, and about two and a half hours of exercise weekly.Study participants were 4,886 British adults aged 18 and older, or 44 years old on average. They were asked about various lifestyle habits. The researchers followed their health situations for the next 20 years. They found the most common causes of death included heart disease and cancer, both related to unhealthy lifestyles.June Stevens, a University of North Carolina public health researcher, said the results are in line with previous studies that examined the effects ofhealth-related habits on longevity (寿命).The findings don‘t mean that everyone with a healthy lifestyle will live longer than those who don‘t, but it will increase the odds (几率), Stevens said.The difference between 'thin' and 'sick'要美丽，更要健康！时尚界拒绝"排骨"美女。

Unit2_Healthy_eating知识点一、健康饮食的重要性我们的身体就像一台精密的机器，而食物就是为这台机器提供能量和养分的燃料。

如果我们给身体提供的是优质的燃料，那么这台机器就能高效运转，保持良好的状态；反之，如果我们总是摄入不健康的食物，身体就可能会出现各种问题。

健康饮食对于维持身体的正常生理功能至关重要。

它有助于提供足够的能量，让我们能够充满活力地应对日常生活和工作。

比如，碳水化合物是我们身体获取能量的重要来源，但要选择复杂碳水化合物，如全麦面包、糙米等，而不是简单的精制糖。

同时，健康饮食对于免疫系统的正常运作也有着不可或缺的作用。

摄入富含维生素、矿物质和抗氧化剂的食物，如新鲜的水果、蔬菜、坚果等，可以帮助我们的身体抵抗疾病和感染。

二、食物的分类和营养成分在探讨健康饮食时，了解食物的分类和其所含的营养成分是基础。

首先是碳水化合物，它分为简单碳水化合物和复杂碳水化合物。

简单碳水化合物包括白糖、糖果等，它们能够迅速提供能量，但容易导致血糖的快速上升和下降。

复杂碳水化合物则如全麦食品、燕麦等，消化吸收相对较慢，能够提供更持久稳定的能量。

蛋白质是构建和修复身体组织的重要成分。

优质蛋白质的来源有鸡胸肉、鱼虾、豆类、蛋类等。

蛋白质对于肌肉的生长和维持、免疫系统的健康都起着关键作用。

脂肪并非都是坏的，我们需要区分好脂肪和坏脂肪。

不饱和脂肪，如橄榄油、鱼油中的脂肪，对心脏健康有益；而饱和脂肪和反式脂肪，常见于油炸食品和加工肉类中，过量摄入会增加心血管疾病的风险。

维生素和矿物质虽然需求量不大，但对身体的正常功能不可或缺。

维生素 A 有助于视力健康，维生素 C 可以增强免疫力，铁元素参与血红蛋白的合成等等。

三、合理的饮食搭配要实现健康饮食，合理的饮食搭配是关键。

每餐都应该包含碳水化合物、蛋白质和健康脂肪。

例如，早餐可以是一份燕麦粥加上鸡蛋和一小把坚果；午餐可以是一份鸡胸肉沙拉，搭配全麦面包；晚餐可以是清蒸鱼、蔬菜和少量的糙米。