
Unit 2 Food and Health 复习讲义 一、单元主题与词汇精讲 主题解读:本单元围绕“饮食与健康”展开,探讨健康饮食的重要性、食物营养成分及生活习惯对健康的影响,涉及营养学知识、饮食建议及疾病预防等话题。 核心词汇分类 食物类健康类行为类 vegetable (n.) 蔬菜 healthy (adj.) 健康的 balance (v./n.) 平衡 protein (n.) 蛋白质 diet (n.) 饮食 avoid (v.) 避免 vitamin (n.) 维生素 energy (n.) 能量 exercise (v./n.) 锻炼 例题1: Q: _____ helps our body grow strong. We can get it from meat and beans. A. Vitamin B. Protein C. Vegetable 解析:选B。蛋白质(protein)帮助身体强壮,肉类和豆类是主要来源。 高频短语 keep a balanced diet 保持均衡饮食 be good for health 对健康有益 plenty of 大量的 stay healthy 保持健康 junk food 垃圾食品 例题2: Q: Eating _____ vegetables is important for our health. A. a little B. plenty of C. a few 解析:选B。plenty of修饰不可数名词或复数名词(vegetables)。 二、语法专项突破 1. 可数名词与不可数名词 规则: 可数名词(有复数形式):apple → apples, egg → eggs 不可数名词(无复数形式):milk, bread, rice 量词搭配:a glass of milk, two pieces of bread 例题3: Q: I need _____ to make a sandwich. A. two breads B. two slices of bread C. two bread 解析:选B。bread不可数,需用量词“slices of”。 2. 情态动词should的用法 用法:提出健康建议,意为“应该”。 结构:主语 + should/shouldn’t + 动词原形 例句: You should drink 8 glasses of water every day. We shouldn’t eat too much fried food. 例题4: Q: You _____ eat more fruits. They are rich in vitamins. A. should B. shouldn’t C. must 解析:选A。根据后句“富含维生素”可知建议“应该吃”。 3. 祈使句(Imperative Sentences) 用法:表示建议或指令,用于健康指导。 结构:动词原形开头(否定句:Don’t + 动词原形)。 例句: Wash your hands before meals. Don’t stay up late. 例题5: Q: _____ too much sugar! It’s bad for your teeth. A. Eat B. Don’t eat C. Not eat 解析:选B。否定祈使句结构为“Don’t + 动词原形”。 三、句型与话题表达 1. 健康饮食建议 It’s important to eat breakfast every day. Why not choose whole-grain bread instead of white bread 2. 描述饮食习惯 I prefer vegetables to fast food. My mom cooks meals with less oil and salt. 例题6: Q: —_____ should I do to keep fit —You should exercise regularly. A. What B. How C. Why 解析:选A。What should I do询问具体建议。 四、题型解题技巧与例题 1. 完形填空:逻辑衔接法 技巧: 根据健康主题词汇(如balanced diet, avoid junk food)选择答案。 注意情态动词should的上下文建议。 例题7: Q: We _____ (should/avoid) eating too much candy to protect our teeth. A. should B. avoid C. shouldn’t 解析:选B。avoid doing sth.表示“避免做某事”。 2. 阅读理解:因果推理题 技巧: 定位表示因果关系的词(because, so, as a result)。 分析饮食行为与健康结果的关联。 例题8(根据短文): Q: Why is eating breakfast important A. It provides energy for the day. B. It makes us feel sleepy. C. It helps us eat more snacks. 解析:定位原文“Breakfast gives us energy to start the day.”,选A。 3. 书面表达:健康饮食倡议书 题目:How to Keep a Healthy Diet 模板: 开头:A healthy diet is important for everyone. H ... ...
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