Using Language 课文精读 · 健康饮食
一、课文原文及逐段翻译
第1段
There is much debate nowadays as to what makes up a healthy diet. For example, scientists have insisted for years that a high-fat diet is bad for us. However, there is increasing evidence that the real driver of poor health is sugar. Heart disease is the number one killer in the USA. In America, about 25 percent or more of daily calories come from sugars.
如今，关于什么是健康饮食仍有诸多争论。例如，多年来科学家一直认为高脂肪饮食对我们有害。然而，越来越多的证据表明，导致健康不佳的真正元凶是糖。心脏病是美国人的头号杀手。在美国，每日热量中约25%甚至更多来自糖分。
第2段
Much of this extra sugar comes from sweets and sweet drinks. The average American gets 1/3 of his or her sugar from sweet drinks alone. The American Heart Association recommends that we limit our sugar intake to less than 100–150 calories a day from sugar, which is less than what is usually contained in one can of sweet drink or one bar of candy. In other words, to be healthy, we must cut down on the amount of sugar we eat.
这些多余的糖分大多来自甜食和甜饮料。普通美国人仅从甜饮料中就摄取了三分之一的糖。美国心脏协会建议我们把每日从糖中摄入的热量限制在100至150卡路里以下，这少于一罐甜饮料或一块糖果通常所含的量。换言之，要想健康，我们就必须减少所摄入的糖量。
第3段
Beyond this, you can keep healthy by consuming different categories of fresh foods, especially fruit and vegetables, rather than processed foods. Compared to people who eat a lot of processed food, those who eat mainly fresh food are more likely to have a healthy diet. Also, some foods, such as beans, nuts and dairy products, provide us with the nutrients our bodies need.
除此之外，你可以通过摄取不同种类的新鲜食物——尤其是水果和蔬菜——而非加工食品来保持健康。与吃大量加工食品的人相比，主要吃新鲜食物的人更有可能拥有健康的饮食。此外，一些食物如豆类、坚果和乳制品，为我们提供身体所需的营养。
第4段
Finally, a fundamental key to healthy eating is to eat slowly. It takes about twenty minutes from the time you start eating for your brain to tell your body that you are full. This means that people who eat too fast will often eat too much before they realize they are full. Eating slowly also allows your body to digest food better and absorb more nutrition. Besides, it can help you to enjoy the taste of your food more.
最后，健康饮食的一个根本要点是细嚼慢咽。从你开始进食起，大约需要二十分钟，大脑才会告诉身体"你饱了"。这意味着吃得过快的人往往还没意识到饱，就已经吃得太多。细嚼慢咽还能让你的身体更好地消化食物、吸收更多营养。此外，它还能让你更多地享受食物的味道。
第5段
There is no one trick to healthy eating. Rather, healthy eating starts with having a healthy attitude towards food. You can ask yourself a question: “Am I eating to live, or am I living to eat?” If you eat primarily to fuel your body, then you have already taken the first step toward a healthier diet. If, however, food has become the centre of your life, you may be on the way to unhealthy eating habits.
健康饮食并没有什么单一的诀窍。相反，健康饮食始于对食物持健康的态度。你可以问自己一个问题："我是为了活着而吃饭，还是为了吃饭而活着？"如果你主要是为了给身体供能而吃，那么你已经迈出了通向更健康饮食的第一步。然而，如果食物已成为你生活的中心，你可能正滑向不健康的饮食习惯。
二、重点单词
debate n. / v.：争论；辩论。much debate as to ...
diet n.：日常饮食；节食。a healthy diet（健康饮食）
insist v.：坚持；主张。scientists have insisted ...
evidence n.：证据；迹象。increasing evidence（越来越多的证据）
calorie n.：卡路里；热量。daily calories（每日热量）
association n.：协会；关联。the American Heart Association
recommend v.：建议；推荐。recommends that we limit ...
intake n.：摄入量。sugar intake（糖的摄入量）
category n.：种类；类别。different categories of fresh foods
processed adj.：加工的。processed foods（加工食品）
nutrient n.：营养素；养分。provide us with the nutrients
dairy adj. / n.：乳制品（的）。dairy products（乳制品）
fundamental adj.：基本的；根本的。a fundamental key（根本要点）
digest v.：消化。digest food better
absorb v.：吸收。absorb more nutrition
nutrition n.：营养；滋养。absorb more nutrition
trick n.：诀窍；花招。no one trick（没有单一诀窍）
attitude n.：态度。a healthy attitude towards food
fuel v.：为……提供燃料；供能。eat primarily to fuel your body
primarily adv.：主要地。eat primarily to fuel ...
三、一词多义与熟词生义
diet 常见义"节食、减肥餐"，课文 a healthy diet 指"日常饮食结构、饮食"，不强调减肥。
category 常见义"范畴、类别（抽象）"，课文 different categories of fresh foods 指"不同种类（的）新鲜食物"。
dairy 常见义作名词"乳品店"，课文 dairy products 作形容词性，意为"乳制的、奶制品的"。
fuel 常见义"燃料（名词）"，课文 fuel your body 作动词，引申为"为身体提供能量"。
trick 常见义"诡计、花招（贬义）"，课文 no one trick 指"诀窍、妙法（中性）"，常用于 there is no trick to ...。
四、重点词块
make up 构成；组成
a high-fat diet 高脂肪饮食
be bad for 对……有害
the real driver of 真正的元凶/驱动因素
heart disease 心脏病
cut down on 削减；减少
keep healthy 保持健康
rather than 而不是
processed foods 加工食品
compared to 与……相比
be likely to 很可能……
provide sb with 向某人提供……
a key to ... ……的关键
eat slowly 细嚼慢咽
realize one is full 意识到饱了
absorb nutrition 吸收营养
no one trick to 没有（单一的）诀窍
have an attitude towards 对……的态度
eating to live 为活着而吃
take the first step toward 迈出……的第一步
五、长难句拆解
【原句 1】There is much debate nowadays as to what makes up a healthy diet.
【主干】There is much debate (as to ...).
【分层】as to 意为"关于、至于"，后接 what makes up a healthy diet 这一 what 宾语从句，作 debate 的定语。
【译文】如今，关于什么是健康饮食仍有诸多争论。
【考点】there be 结构；as to + what 宾语从句。
【原句 2】However, there is increasing evidence that the real driver of poor health is sugar.
【主干】there is increasing evidence.
【分层】that the real driver ... is sugar 为同位语从句，解释 evidence 的具体内容；of poor health 为介词短语作后置定语修饰 driver。
【译文】然而，越来越多的证据表明，导致健康不佳的真正元凶是糖。
【考点】there be；that 同位语从句（注意区别于定语从句）。
【原句 3】The American Heart Association recommends that we limit our sugar intake to less than 100–150 calories a day from sugar, which is less than what is usually contained in one can of sweet drink or one bar of candy.
【主干】The Association recommends that we limit our intake ...
【分层】that 引导宾语从句（虚拟语气，limit 用原形）；which is less than ... 为非限制性定语从句指代前面的 100–150 calories；what is usually contained 为 what 从句作 than 的宾语。
【译文】美国心脏协会建议我们把每日从糖中摄入的热量限制在100至150卡路里以下，这少于一罐甜饮或一块糖果通常所含的量。
【考点】recommend 后 that 从句用(should) do；which 非限制性定语从句；what 从句。
【原句 4】Compared to people who eat a lot of processed food, those who eat mainly fresh food are more likely to have a healthy diet.
【主干】those are more likely to have a healthy diet.
【分层】Compared to ... 为过去分词作状语（被动含义，逻辑主语 those）；其后 people 与 those 后各带一个 who 引导的定语从句。
【译文】与吃大量加工食品的人相比，主要吃新鲜食物的人更可能有健康的饮食。
【考点】过去分词作状语；who 定语从句（两处）；more likely to do。
【原句 5】It takes about twenty minutes from the time you start eating for your brain to tell your body that you are full.
【主干】It takes about twenty minutes ... for your brain to tell your body.
【分层】It 为形式主语，真正主语是 for your brain to tell ...；from the time you start eating 为时间状语，其中 you start eating 为省略 that 的定语从句修饰 time；that you are full 为 tell 的宾语从句。
【译文】从你开始进食起，大约需要二十分钟，大脑才会告诉身体你饱了。
【考点】It takes ... for ... to do 句型；省略 that 的定语从句；that 宾语从句。
六、语法点清单
1. there be 的多种用法
There is much debate ...；there is increasing evidence ...；There is no one trick ...。there be 后可接 as to 短语或同位语从句。
2. 同位语从句（that）
evidence that the real driver ... is sugar，that 只起连接作用、不充当成分，解释抽象名词 evidence。
3. 定语从句（who）
people who eat ...；those who eat ...；the time (that) you start eating。注意区分限制性与省略 that 的情况。
4. 过去分词作状语（Compared to）
Compared to people ...，表"与……相比"，逻辑上为被动，主语是主句主语 those。
5. 动名词作主语与宾语
Eating slowly allows ...（主语）；starts with having ...（介词宾语）；eating to live / living to eat（表语/对照）。
6. 建议与条件表达
recommends that we (should) limit；If you eat primarily ..., then ...；If, however, food has become ...。条件句插 however 表语域。
7. It takes ... for ... to do 句型
用于说明"做某事花费（时间）"，It 形式主语，for 引出动作执行者。
七、逻辑链
争议引入（第1段）：健康饮食之争——脂肪有害？证据指向"糖"才是真凶（美国25%+热量来自糖）
↓
对策一·减糖（第2段）：糖多来自甜食甜饮；协会建议限糖；必须 cut down
↓
对策二·新鲜（第3段）：多吃新鲜食物而非加工食品，获取身体所需营养素
↓
对策三·慢食（第4段）：20分钟大脑才知饱，慢吃防过食、助消化吸收
↓
根本（第5段）：没有单一诀窍，健康饮食始于"为活而吃"的正确态度
这是一篇"现象—对策—归结"的说明/议论文：第1段抛出争议与核心观点（糖是元凶）；第2—4段分三点给出可操作建议（减糖、鲜食、慢食）；第5段升华到"态度"这一根本，呼应开篇 debate。
八、写作迁移
模板 1：There is much debate nowadays as to what makes up ...
课文：There is much debate nowadays as to what makes up a healthy diet.
仿写：There is much debate nowadays as to what counts as true success.（如今关于什么才算真正的成功仍有诸多争论。）——用于引出有争议的话题。
模板 2：There is increasing evidence that ...
课文：there is increasing evidence that the real driver of poor health is sugar.
仿写：There is increasing evidence that regular exercise improves memory.（越来越多的证据表明规律运动能改善记忆。）——用于以证据支撑论点。
模板 3：Compared to ..., those who ... are more likely to ...
课文：Compared to people who eat a lot of processed food, those who eat mainly fresh food are more likely to have a healthy diet.
仿写：Compared to students who cram at the last minute, those who review daily are more likely to remember.（与临时抱佛脚的学生相比，每日复习的学生更可能记住。）——用于对比两类对象。
模板 4：A fundamental key to ... is to ...
课文：a fundamental key to healthy eating is to eat slowly.
仿写：A fundamental key to effective learning is to stay focused.（有效学习的根本要点是保持专注。）——用于点明核心方法。
模板 5：If you ..., then you have already taken the first step toward ...
课文：If you eat primarily to fuel your body, then you have already taken the first step toward a healthier diet.
仿写：If you read widely, then you have already taken the first step toward better writing.（如果你广泛阅读，便已迈出写好文章的第一步。）——用于鼓励性结尾。
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