Unit 3 Keep Fit 单元知识点 2025-2026学年人教版英语七年级下册

该初中英语知识清单系统梳理了人教版七年级下册Unit 3 "Keep Fit"单元知识体系。从重点单词（含音标、词性、释义）出发，延伸至必背短语、常考句型，进而解析核心语法（一般现在时、介词by、情态动词等），辅以重点词汇精讲（易混词辨析），最终提供话题写作模板，形成从基础积累到综合应用的学习支架。 知识链路按“词汇-短语-句型-语法-应用”逻辑递进，每个模块注重实用性，如单词标注音标词性，句型强调默写，语法解析清晰易懂。通过词汇对比（如fit/healthy）、语法规则梳理培养思维品质，写作模板助力语言能力提升，符合“学用结合”的学习能力培养需求。

人教版七年级下册英语 Unit 3 Keep Fit单元知识点精编 一、重点单词(音标 + 词性 + 释义) 1.fit /f t/adj. 健康的;合适的 v. 适合;适应(过去式:fitted) 2.exercise / eks sa z/v. & n. 锻炼;运动;练习 3.sport /sp t/n. 运动;体育项目(复数:sports) 4.running / r n /n. 跑步 v. 跑(run 的现在分词) 5.swimming / sw m /n. 游泳 v. 游泳(swim 的现在分词) 6.cycling / sa kl /n. 骑自行车 v. 骑行(cycle 的现在分词) 7.hiking / ha k /n. 徒步旅行 v. 徒步(hike 的现在分词) 8.yoga / j /n. 瑜伽 9.balance / b l ns/n. 平衡 v. 使平衡 10.strength /stre /n. 力量;力气 11.energy / en d i/n. 精力;能量 12.healthy / hel i/adj. 健康的(比较级:healthier;最高级:healthiest) 13.unhealthy / n hel i/adj. 不健康的 14.diet / da t/n. 饮食;节食 v. 节食 15.nutrition /nju tr n/n. 营养 16.vegetable / ved t bl/n. 蔬菜(复数:vegetables) 17.fruit /fru t/n. 水果(不可数;表种类时可数:fruits) 18.grain / re n/n. 谷物;粮食 19.protein / pr ti n/n. 蛋白质 20.vitamin / v t m n/n. 维生素 21.sleep /sli p/v. & n. 睡觉;睡眠(过去式:slept) 22.rest /rest/v. & n. 休息;放松 23.relax /r l ks/v. 放松;休息(同 Unit 2) 24.stress /stres/n. 压力;紧张 v. 使承受压力 25.tired / ta d/adj. 疲倦的;累的 26.active / kt v/adj. 活跃的;积极的 27.regularly / re j l rli/adv. 定期地;有规律地 28.daily / de li/adj. 日常的;每日的 adv. 每天 29.habit / h b t/n. 习惯;习性 30.break /bre k/v. 打破;违反(过去式:broke)n. 休息(同 Unit 2) 31.continue /k n t nju /v. 继续;持续 32.improve / m pru v/v. 提高;改善 33.challenge / t l nd /n. 挑战 v. 向…… 挑战 34.goal / l/n. 目标;球门 35.achieve / t i v/v. 实现;达到 36.join /d n/v. 加入;参加 37.team /ti m/n. 团队;小组 38.match /m t /n. 比赛;竞赛 v. 匹配 39.winner / w n /n. 获胜者;赢家 40.lose /lu z/v. 输掉;失去(过去式:lost) 二、重点短语(必背) 1.keep fit 保持健康(= keep healthy) 2.take exercise 做运动;锻炼(= do exercise) 3.do sports 进行体育运动 4.go running 去跑步 5.go swimming 去游泳 6.go cycling 去骑自行车 7.go hiking 去徒步旅行 8.practice yoga 练瑜伽 9.keep a balanced diet 保持均衡饮食 10.get enough sleep 获得充足睡眠 11.have a rest 休息一下 12.reduce stress 减轻压力 13.stay active 保持活跃 14.exercise regularly 定期锻炼 15.daily habits 日常习惯 16.break a bad habit 改掉坏习惯 17.form a good habit 养成好习惯 18.join a sports team 加入运动队 19.take part in 参加(活动、比赛) 20.win the match 赢得比赛 21.lose the game 输掉比赛 22.set a goal 设定目标 23.achieve one’s goal 实现目标 24.improve physical strength 增强体力 25.gain energy 获得能量 26.be good for 对…… 有益(同 Unit 1) 27.be bad for 对…… 有害(同 Unit 1) 28.plenty of 大量;许多(修饰可数 / 不可数名词) 29.cut down on 减少;削减(后接名词) 30.stay away from 远离;避开 三、重点句型(常考 + 默写) 1.—How do you keep fit? —I keep fit by running every morning. — 你如何保持健康?— 我通过每天早上跑步保持健康。 2.It’s important to exercise regularly and eat a balanced diet. 定期锻炼和均衡饮食很重要。 3.She goes swimming three times a week to improve her swimming skills. 她每周去游泳三次,以提高游泳技术。 4.We should get at least 8 hours of sleep every night. 我们每晚至少应该睡 8 小时。 5.Junk food is bad for our health, so we should stay away from it. 垃圾食品对我们的健康有害,所以我们应该远离它。 6.My brother joined the school basketball team last month. 我哥哥上个月加入了学校篮球队。 7.They took part in the school sports meeting and won first prize. 他们参加了学校运动会,并获得了一等奖。 8.I feel more energetic after doing yoga for 30 minutes. 练了 30 分钟瑜伽后,我感觉精力更充沛了。 9.He set a goal to run 5 kilometers every day, and he achieved it. 他设定了每天跑 5 公里的目标,并且实现了它。 10.—How often do you exercise? —I exercise almost every day. — 你多久锻炼一次?— 我几乎每天都锻炼。 11.Hiking in the mountains is a great way to relax and enjoy nature. 在山里徒步旅行是放松和欣赏自然的好方法。 12.We need to balance study and exercise to stay healthy. 我们需要平衡学习和锻炼来保持健康。 13.She used to eat a lot of snacks, but now she has formed a good eating habit. 她以前吃很多零食,但现在养成了良好的饮食习惯。 14.If you want to keep fit, you should cut down on sugary drinks. 如果你想保持健康,应该减少含糖饮料的摄入。 15.Playing team sports can help us learn to cooperate with others. 参加团队运动能帮助我们学会与他人合作。 四、核心语法(清晰易懂) 1.一般现在时表习惯性、经常性动作 用法:描述日常锻炼、饮食、作息等习惯性行为,常与频度副词或时间状语连用。 常用时间状语:every day/week/month(每天 / 周 / 月)、three times a week(每周三次)、usually(通常)、often(经常)、always(总是) 例句: He exercises for an hour every morning. 他每天早上锻炼一小时。 They eat vegetables every meal. 他们每顿饭都吃蔬菜。 第三人称单数变化:遵循 Unit 2 语法规则(work works, go goes, study studies) 例句:She does yoga every evening. 她每晚练瑜伽。 2.介词 by 表 “通过某种方式” 结构:by + 动名词(doing sth.),表示 “通过做某事”(侧重方式、手段) 例句: We can keep fit by doing sports. 我们可以通过做运动保持健康。 She improved her English by reading English books. 她通过读英语书提高了英语水平。 区别于 “by + 交通工具”(表出行方式):by bike(骑自行车),此处 by 后接动名词表 “健身方式”。 3.情态动词 should /shouldn’t /had better should(应该):表建议、义务,用于推荐健康的行为习惯 例句:You should drink plenty of water every day. 你每天应该喝足够的水。 shouldn’t(不应该):表不建议、禁止,用于提醒不健康的行为 例句:You shouldn’t stay up late playing games. 你不应该熬夜玩游戏。 had better(最好):表强烈建议,语气比 should 更强 例句:You had better go to bed early tonight. 你今晚最好早点睡觉。 否定式:had better not do sth.(You had better not eat too much junk food. 你最好不要吃太多垃圾食品。) 4.特殊疑问句(提问频率、方式、数量) ①提问频率:How often + do/does + 主语 + 动词原形? 例句:How often do you go hiking? 你多久去一次徒步旅行? 回答:Once a month.(每月一次)/ Twice a week.(每周两次) ②提问方式:How + do/does + 主语 + 动词原形?(侧重方式) 例句:How does she keep fit? 她如何保持健康? ③提问数量:How much + 不可数名词?/ How many + 可数名词复数? 例句:How much fruit do you eat every day? 你每天吃多少水果? 五、重点词汇精讲(考点) 1.fit / healthy fit:侧重 “身体强健、适合运动”,强调体能状态(keep fit 保持健康;fit for sports 适合运动) 例句:He is very fit because he exercises every day. 他很健康,因为他每天锻炼。 healthy:侧重 “身体健康、无疾病”,可修饰饮食、生活方式(healthy diet 健康饮食;healthy habits 健康习惯) 例句:Eating vegetables is good for a healthy body. 吃蔬菜对身体健康有益。 2.exercise / sport exercise:不可数名词(泛指 “锻炼”)(do exercise 做锻炼);可数名词(特指 “具体练习、运动项目”)(math exercises 数学练习题) 例句:I do exercise for 30 minutes every morning. 我每天早上锻炼 30 分钟。 sport:可数名词(特指 “体育项目”),常用复数 sports 表 “体育运动”(play sports 做运动;favorite sport 最喜欢的运动) 例句:Basketball is my favorite sport. 篮球是我最喜欢的运动。 3.join / take part in join:加入 “组织、团队、群体”(join the army 参军;join a sports team 加入运动队) 例句:She joined the school swimming club last year. 她去年加入了学校游泳俱乐部。 take part in:参加 “活动、比赛、会议”(take part in the sports meeting 参加运动会) 例句:All students should take part in physical education classes. 所有学生都应该上体育课。 4.plenty of / many / much plenty of:修饰可数 / 不可数名词,表 “大量;足够”(plenty of time 充足的时间;plenty of vegetables 大量蔬菜) 例句:We need plenty of water when doing exercise. 锻炼时我们需要大量的水。 many:修饰可数名词复数(many fruits 许多水果;many sports 许多运动) much:修饰不可数名词(much junk food 很多垃圾食品;much stress 很大压力) 5.set / achieve set:动词 “设定;制定”(set a goal 设定目标;set a time 设定时间) 例句:He set a goal to run a marathon next year. 他设定了明年跑马拉松的目标。 achieve:动词 “实现;达到”(achieve a goal 实现目标;achieve success 获得成功) 例句:With hard work, you can achieve any goal you set. 通过努力,你能实现任何设定的目标。 六、话题写作模板(How I Keep Fit) How I Keep Fit Keeping fit is important for everyone, and I have my own ways to stay healthy. First, I exercise regularly. I go running for 20 minutes every morning before school. On weekends, I often go swimming with my friends or go cycling in the park. These sports not only make me strong but also help me relax. Second, I keep a balanced diet. I eat plenty of vegetables and fruit every day, and I drink a lot of water. I never eat junk food or drink sugary drinks because they are bad for my health. Third, I get enough sleep. I go to bed at 9:30 every night and wake up at 6:30 in the morning. Besides, I join the school basketball team. Playing basketball with my teammates teaches me cooperation. I think keeping fit is not difficult as long as we form good habits. Let’s exercise more, eat healthily, and stay fit together! 1 学科网(北京)股份有限公司 $