Unit 3 Keep Fit 易错专题专练2025-2026学年外研版英语七年级下册

**基本信息** 聚焦健康生活主题，以易错点分类为框架，通过概念辨析-典例解析-分层训练构建系统性突破路径，强化语言能力与思维品质。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |易错点辨析|4个核心易错点+8道典型易错题|疑问词功能对比（how often/long/soon）、名词可数性规则（exercise多义用法）、情态动词用法口诀（should后接动词原形）|从概念区分到语境应用，建立语法规则与语义场景的关联| |基础过关|4类基础题型（词汇/选择/词形/句型）|句型转换三步法（确定疑问词-调整语序-检查时态）、词形变化语境分析法|从词汇积累到句型结构，夯实语言知识基础| |提升练习|3类提升题型（语法填空/阅读/书面表达）|语篇填空逻辑链（上下文语义衔接）、书面表达四要素（运动/饮食/睡眠/建议）|从单句应用到语篇输出，培养综合语言运用能力|

2024年新教材七年级下册英语人教版 Unit 3 Keep Fit 易错专题专练+解析 本单元主题是"健康生活与运动"，学生需要掌握有关运动项目、健身频率、身体状况的词汇，熟练运用 how often 引导的特殊疑问句询问频率，区分 可数名词与不可数名词，并正确使用建议句型。单元常见词汇包括 skateboarding, rope skipping, exercise, treadmill, app, health 等；核心句型包括 How often do you exercise? How many times a week? I seldom play basketball. 等。 本资料重点训练以下易错内容： • how often 与 how long 的辨析 • how many times 与频率副词（once, twice, seldom, usually）的区分 • 可数名词与不可数名词（exercise, milk, apple, vegetable）的用法 • 情态动词 should / shouldn't 提建议 • 句型转换中的对划线部分提问 易错点一：how often 与 how long / how soon 的辨析 学生常混淆询问"频率"、"时长"和"多久之后"的句型。 • How often: 多久一次（问频率）→ 回答：Once a week, Twice a month, Often. • How long: 多长时间（问时长）→ 回答：For two hours, Since last year. • How soon: 多久之后（用于将来时）→ 回答：In two days. 易错题1 — ______ do you play badminton? — Once a week. A. How long B. How often C. How soon D. How far 易错题2 — ______ do you usually sleep every night? — For about eight hours. A. How often B. How long C. How many D. How much 易错点二：how many times 与频率副词 学生容易混淆"次数"和"频率"。 • How many times: 多少次（问具体的次数）→ 回答：Once, Twice, Three times. • How often: 多经常（问频率密度）→ 回答：Every day, Seldom, Never. 易错题3 — ______ do you go to the park? — Twice a week. A. How many times B. How often C. How long D. How much 易错题4 — ______ do you watch TV every day? — Once. I only watch the news. A. How often B. How long C. How many times D. When 易错点三：exercise 的可数与不可数 • exercise 作"锻炼"讲时，是不可数名词（do exercise √, do exercises √ 但意思不同）。 • exercise 作"体操"或"练习"讲时，是可数名词复数（morning exercises, math exercises）。 学生常错误地在不可数含义后加s。 易错题5 Doing enough ______ is good for our health. A. exercise B. exercises C. exercising D. an exercise 易错题6 We should do eye ______ every day to protect our eyes. A. exercise B. exercises C. exercising D. an exercise 易错点四：should / shouldn't 提建议 should 是情态动词，后接动词原形，否定形式是 shouldn't。学生常错误地在should后加to，或把shouldn't写成don't should。 易错题7 You ______ eat too much junk food. It's bad for your health. A. should B. shouldn't C. need D. may 易错题8 We ______ keep our classroom clean and tidy. A. should B. shouldn't C. needn't D. may not 基础过关 一、根据句意和汉语提示写单词 1. Skateboarding is my favorite ______.（滑板运动） 2. I often jump ______ in the park.（绳子） 3. Running on a ______ is boring but effective.（跑步机） 4. There is a useful fitness ______ on my phone.（应用程序） 5. Eating more vegetables is good for your ______.（健康） 6. I ______ play basketball, maybe once a month.（很少） 7. He goes swimming three ______ a week.（次） 8. We should drink milk every day to keep ______.（强壮的） 二、易错选择：单项选择 9. — ______ do you visit your grandparents? — Every Sunday. A. How long B. How often C. How soon D. How far 10. My father drinks milk ______a day to keep healthy. A. one B. twice C. every D. three 11. Apples are ______ food. We should eat them often. A. health B. healthy C. unhealthy D. healthily 12. — How often does Tom exercise? — He ______ exercises. He is very lazy. A. often B. usually C. seldom D. always 13. You ______ eat too much candy. It's bad for your teeth. A. should B. must C. shouldn't D. need 14. Doing morning ______ is a good habit. A. exercise B. exercises C. exercising D. an exercise 15. — ______ I help you with the housework? — Sure, thanks. A. Must B. Should C. Need D. Shall 三、词形变化：用所给单词的适当形式填空 16. Look! The children are ______ (skip) rope over there. 17. We should eat more ______ (vegetable) and fruit. 18. He goes to the gym ______ (two) a week. 19. It's important to keep ______ (health). 20. She ______ (hard) ever eats hamburgers because they are junk food. 四、句型转换：按要求完成句子 21. I exercise three times a week.（对划线部分提问） ______ ______ do you exercise? 22. He sleeps for eight hours every night.（对划线部分提问） ______ ______ does he sleep every night? 23. You should eat more fruit.（改为否定句） You ______ ______ more fruit. 24. She usually plays badminton on Sundays.（对划线部分提问） ______ ______ she usually play badminton? 25. We must keep our classroom clean.（改为同义句） We ______ ______ keep our classroom clean. 提升练习 五、语法填空：阅读短文，用所给词的正确形式填空 Keeping fit is important for everyone. We 26______ (should) exercise regularly. I often go 27______ (skateboard) with my friends. My father runs on the treadmill every morning. He says it helps him keep 28______ (health). My mother thinks eating vegetables is good for her. She eats 29______ (they) every day. We 30______ (not) eat too much junk food. We should drink milk every day. It makes us 31______ (strength). How often do you exercise? If you want to be fit, you 32______ (must) start now. Don't wait until tomorrow. Exercise is fun and good for you. Let's 33______ (keep) fit together! 六、阅读理解：阅读短文，选择正确答案 Tom is a middle school student. He likes sports very much. He usually plays basketball with his friends after school. He goes swimming twice a week. On Sundays, he often goes skateboarding in the park. However, Tom has some bad habits too. He loves hamburgers and Coke. He eats them almost every day. His mother tells him, "Hamburgers are junk food. You shouldn't eat them too often." Tom knows it's not good for him, but he still likes them. Now Tom wants to change. He plans to eat more vegetables and fruits. He decides to drink milk every morning. He wants to be stronger and healthier. 34. How often does Tom go swimming? A. Every day. B. Twice a week. C. Once a month. D. Seldom. 35. What does Tom like doing in the park on Sundays? A. Playing basketball.B. Swimming.C. Skateboarding.D. Running. 36. Why shouldn't Tom eat hamburgers too often? A. Because they are expensive. B. Because they are junk food. C. Because he doesn't like them. D. Because they make him thirsty. 37. What does Tom plan to drink every morning? A. Coke. B. Juice. C. Milk. D. Water. 38. What is the main idea of the passage? A. Tom's favorite sports. B. Tom's bad eating habits. C. Tom's plan to keep fit. D. Tom's school life. 七、书面表达 本单元书面表达常考题目是"介绍你的生活习惯以保持健康"。写作时可从以下几个方面写： • 运动频率（How often do you exercise?） • 饮食习惯（What do you eat?） • 睡眠习惯（How long do you sleep?） • 给出建议（Should/Shouldn't） 题目： 假如你是李华，请根据下面提示写一篇60词左右的英语短文，介绍你是如何保持健康的。 提示： 1. How often do you exercise? 2. What sports do you like? 3. What do you usually eat? 4. How long do you sleep? 5. Give one suggestion about keeping fit. 参考答案与解析 一、基础过关答案 1. skateboarding 2. rope 3. treadmill 4. app 5. health 6. seldom 7. times 8. strong 二、单项选择答案与解析 9. B 解析：根据回答"Every Sunday"可知，问句是询问频率。How often 多久一次，符合语境。 10. B 解析：表示"一天两次"用 twice a day。one 一；every 每个；three 三（后面需加times）。 11. B 解析：此处需要一个形容词修饰名词food。healthy 健康的，符合语境。health 是名词；unhealthy 是不健康的；healthily 是副词。 12. C 解析：根据后句"He is very lazy."可知，他很少锻炼。seldom 很少，符合语境。 13. C 解析：根据后句"It's bad for your teeth."可知，不应该吃太多糖。shouldn't 不应该，符合语境。 14. B 解析：do morning exercises 是固定搭配，意为"做早操"，此时exercise是可数名词复数。 15. D 解析：Shall I...? 是用于征求对方意见的句型，意为"我可以……吗？"。 三、词形变化答案与解析 16. skipping 解析：Look! 提示用现在进行时，结构是 be + doing。 17. vegetables 解析：vegetable是可数名词，此处表示泛指，常用复数形式。 18. twice 解析：twice a week 一周两次，是固定表达。 19. healthy 解析：keep 是系动词，后接形容词作表语。health的形容词形式是healthy。 20. hardly 解析：此处需要一个副词修饰动词eats。hardly ever 几乎不，符合语境。 四、句型转换答案 21. How often 22. How long 23. shouldn't eat 24. When does 25. have to 五、语法填空答案 26. should 27. skateboarding 28. healthy 29. them 30. shouldn't 31. strong 32. must 33. keep 阅读理解答案 34. B35. C36. B37. C38. C 七、书面表达常用句型 1. It is important to keep fit. 2. I exercise four times a week. 3. I like playing basketball and running. 4. I usually eat healthy food like apples and fish. 5. I drink milk every day. 6. I sleep for nine hours every night. 7. We shouldn't eat too much junk food. 8. Let's keep fit together. 参考范文： Keep Fit It is important to keep fit. I exercise four times a week. I like playing basketball and running. I usually eat apples, carrots and fish because they are healthy food. I drink milk every day. I sleep for nine hours every night. I think we shouldn't eat too much junk food. Let's keep fit together! 学科网（北京）股份有限公司 $