Unit3语法专练-2025-2026学年人教版英语七年级下册

该初中英语单元语法专练清单系统梳理了人教版7下第三单元核心语法点，涵盖物主代词（形容词性与名词性）和频率副词两大知识范畴，搭建了从定义解析、用法对比到易错点提醒的递进式学习支架，配套分层强化练习助力知识应用。 清单通过“物主代词对比表”“频率副词频率轴”构建知识体系，如标注its与it's区别、总结名词性物主代词构成规律，培养学生语言能力与思维品质。分层练习含单选、填空等题型，参考答案附详细解析，支持不同基础学生自主学习，教师可据此精准教学，提升课堂实效。

人教版7下第三单元语法专练 物主代词和频率副词 第一部分：知识点详细讲解 一、物主代词详解 1. 什么是物主代词？ 物主代词用来表示所有关系，即“谁的”。英语中的物主代词分为两类：形容词性物主代词和名词性物主代词。 2. 物主代词一览表 第一人称： 形容词性：my（我的） 名词性：mine（我的） 第二人称： 形容词性：your（你的/你们的） 名词性：yours（你的/你们的） 第三人称： 形容词性：his（他的）、her（她的）、its（它的） 名词性：his（他的）、hers（她的）、its（它的） 第一人称复数： 形容词性：our（我们的） 名词性：ours（我们的） 第三人称复数： 形容词性：their（他/她/它们的） 名词性：theirs（他/她/它们的） 3. 形容词性物主代词详解 用法：必须放在名词前，不能单独使用 这是我的书。 This is my book. 她的名字是莉莉。 Her name is Lily. 他们的学校很大。 Their school is big. 常见错误： 误：This book is my. （my不能单独使用） 正：This is my book. 或 This book is mine. 4. 名词性物主代词详解 用法：相当于“形容词性物主代词 + 名词”，可以单独使用 这本书是我的。 This book is mine. (= my book) 你的书包是红色的，我的是蓝色的。 Your bag is red, mine is blue. (= my bag) 我们的教室比他们的大。 Our classroom is bigger than theirs. (= their classroom) 构成规律： 名词性物主代词 = 形容词性物主代词 + s（但my要变成mine，his/its本身已有s保持不变） my → mine your → yours her → hers our → ours their → theirs his → his its → its 5. 两种物主代词的对比 形容词性 + 名词 = 名词性 my book = mine your pen = yours her bag = hers our house = ours their car = theirs 例句对比： 这是我的自行车。 This is my bike. / This bike is mine. 那是你的座位。 That is your seat. / That seat is yours. 这些是我们的照片。 These are our photos. / These photos are ours. 6. 易错点提醒 its 和 it's 的区别： its 是物主代词（它的） it's 是 it is 的缩写（它是） 误：The dog is eating it's food. 正：The dog is eating its food. 名词性物主代词作主语时，谓语动词与所指代的名词一致： 你的鞋子是黑色的，我的是白色的。 Your shoes are black, mine are white. (mine = my shoes，复数) 你的书是新的，我的是旧的。 Your book is new, mine is old. (mine = my book，单数) 二、频率副词详解 1. 什么是频率副词？ 频率副词用来表示动作发生的频率，回答 How often...?（多久一次）的问题。 2. 常用频率副词及频率高低 100% 总是 always 90% 通常 usually 80% 经常 often 50% 有时 sometimes 20% 不常 seldom 10% 很少 rarely 0% 从不 never 3. 频率副词在句中的位置 位置一：放在行为动词之前 我总是步行上学。 I always walk to school. 她通常六点起床。 She usually gets up at six. 他们从不吃肉。 They never eat meat. 位置二：放在be动词、情态动词或助动词之后 他上学总是迟到。 He is always late for school. 你永远不能放弃。 You must never give up. 我通常不喝咖啡。 I don't usually drink coffee. (don't之后的usually) 位置三：sometimes可以放在句首、句中或句末 有时我步行去上学。 Sometimes I walk to school. 我有时步行去上学。 I sometimes walk to school. 我步行去上学，有时候。 I walk to school sometimes. 4. 频率副词的提问 询问频率用 How often。 你多久看一次电影？ How often do you watch movies? 我每周看一次。 I watch movies once a week. 你总是迟到吗？ Do you always arrive late? 不，我从不迟到。 No, I am never late. 5. 常用频率短语 除了频率副词，还可以用以下短语表示频率： 具体次数： once a week 每周一次 twice a month 每月两次 three times a year 每年三次 泛指频率： every day 每天 every morning 每天早上 on Sundays 每周日 at weekends 在周末 6. 频率副词与一般现在时 频率副词常与一般现在时连用，描述习惯性或经常发生的动作。 他总是早上喝咖啡。 He always drinks coffee in the morning. 我们经常去公园。 We often go to the park. 她从不吃早饭。 She never eats breakfast. 第二部分：分层强化练习 一、单项选择 1. This is not ______ book. ______ is on the desk. A. my; My B. mine; My C. my; Mine D. mine; Mine 2. —______ do you go to the gym? —Twice a week. A. How long B. How often C. How far D. How many 3. That is ______ classroom. ______ is next to the library. A. our; Our B. ours; Our C. our; Ours D. ours; Ours 4. I ______ get up early on Sundays. I like to sleep late. A. always B. usually C. often D. never 5. —Whose pen is this? —It's ______. A. my B. her C. his D. your 6. My sister ______ eats junk food because she wants to stay healthy. A. always B. usually C. often D. seldom 7. This is my bike. ______ is over there. A. Your B. Yours C. You D. Yourself 8. He is ______ late for school. He is always on time. A. always B. usually C. sometimes D. never 9. These are not my pencils. ______ are in my pencil case. A. My B. Mine C. I D. Me 10. I ______ go to the movies on weekends, but not very often. A. always B. usually C. sometimes D. never 11. This is your dictionary, but where is ______? A. my B. mine C. me D. I 12. She ______ gets up at 6:00. That's her daily routine. A. always B. seldom C. never D. sometimes 13. The cat is eating ______ food. A. it's B. its C. it D. itself 14. —How ______ do you visit your grandparents? —Every week. A. long B. often C. far D. many 15. Our school is big, but ______ is small. A. their B. theirs C. they D. them 16. I ______ drink coffee. I prefer tea. A. always B. usually C. often D. seldom 17. This is not my ruler. ______ is longer. A. My B. Mine C. I D. Me 18. He is ______ busy on Mondays. He has three meetings. A. always B. never C. seldom D. sometimes 19. These are your books. ______ are on the shelf. A. Our B. Ours C. We D. Us 20. —Do you ______ eat breakfast? —Yes, every day. A. always B. never C. seldom D. sometimes 二、用所给词的适当形式填空 1. This is ________ (I) book. That one is ________ (you). 2. She ________ (usual) gets up at 7:00 in the morning. 3. These are not my pens. ________ (我的) are in the pencil box. 4. He is ________ (always) late for class. The teacher is angry. 5. Is this ________ (he) bike? No, it's ________ (she). 6. I ________ (not always) eat breakfast. Sometimes I'm in a hurry. 7. Our classroom is clean, but ________ (他们的) is dirty. 8. She ________ (rare) watches TV. She prefers reading. 9. This is not your phone. ________ (你的) is on the table. 10. They ________ (often) play basketball after school. 11. The dog is playing with ________ (it) toy. 12. I ________ (never) eat meat. I'm a vegetarian. 13. Your bag is red. ________ (我的) is blue. 14. He ________ (sometimes) goes to the library on weekends. 15. This house is ________ (我们的). That one is ________ (他们的). 三、句型转换 1. This is my pencil. (改为同义句) This pencil ________ ________. 2. I always get up at 6:00. (改为否定句) I ________ ________ get up at 6:00. 3. These are their books. (改为同义句) These books ________ ________. 4. He goes to the gym three times a week. (对划线部分提问) ________ ________ ________ he ________ to the gym? 5. That is her dictionary. (改为同义句) That dictionary ________ ________. 6. She is never late for school. (改为肯定句) She ________ ________ late for school. 7. This is our classroom. (改为同义句) This classroom ________ ________. 8. I sometimes watch TV in the evening. (对划线部分提问) ________ ________ ________ you watch TV in the evening? 9. Those are your books. (改为同义句) Those books ________ ________. 10. They often play football on Sundays. (改为一般疑问句) ________ they often ________ football on Sundays? 四、改错题 1. This book is my. ________ 应改为 ________ 2. He is often late for school. (找出错误并改正) ________ 应改为 ________ 3. Your is on the desk. ________ 应改为 ________ 4. I always not eat junk food. ________ 应改为 ________ 5. This is her bag. That one is my. ________ 应改为 ________ 6. She goes often to the library. ________ 应改为 ________ 7. The cat is eating it's food. ________ 应改为 ________ 8. How long do you exercise? —Every day. ________ 应改为 ________ 9. These are our books. Their are on the shelf. ________ 应改为 ________ 10. He does never smoke. ________ 应改为 ________ 五、根据汉语意思完成句子 1. 这是我的书包。你的在那个椅子上。 This is ________ schoolbag. ________ is on that chair. 2. 你多久去一次游泳？ ________ ________ do you go swimming? 3. 他们的房子很大，但我们的小。 ________ house is big, but ________ is small. 4. 我从不喝咖啡。 I ________ drink coffee. 5. 这些不是我的铅笔。我的在铅笔盒里。 These are not my pencils. ________ are in the pencil case. 6. 她通常七点起床。 She ________ gets up at seven. 7. 你的手机是新的，我的是旧的。 ________ phone is new, ________ is old. 8. 我们经常在公园里散步。 We ________ take a walk in the park. 9. 这只狗在玩它的玩具。 The dog is playing with ________ toy. 10. 你总是迟到吗？ ________ you ________ late? 第三部分：参考答案与详细解析 一、单项选择答案与解析 1. C 第一空后有名词book，用形容词性物主代词my；第二空单独使用，用名词性物主代词Mine。 2. B 由答句“每周两次”可知，询问频率，用How often。 3. C 第一空后有名词classroom，用形容词性物主代词our；第二空单独使用，用名词性物主代词Ours。 4. D 由“我喜欢睡懒觉”可知，周日从不早起，用never。 5. C 空后无名词，需用名词性物主代词，his既是形容词性也是名词性。 6. D 由“想保持健康”可知，很少吃垃圾食品，用seldom。 7. B 空后无名词，用名词性物主代词Yours。 8. D 由“他总是准时”可知，从不迟到，用never。 9. B 空后无名词，用名词性物主代词Mine。 10. C 由“但不是经常”可知，是“有时”，用sometimes。 11. B 空后无名词，用名词性物主代词mine。 12. A 由“这是她的日常习惯”可知，总是6点起床，用always。 13. B 表示“它的”，用形容词性物主代词its。it's是it is的缩写。 14. B 由答句“每周”可知，询问频率，用How often。 15. B 空后无名词，用名词性物主代词theirs。 16. D 由“我更喜欢茶”可知，很少喝咖啡，用seldom。 17. B 空后无名词，用名词性物主代词Mine。 18. A 由“他有三场会议”可知，周一总是很忙，用always。 19. B 空后无名词，用名词性物主代词Ours。 20. A 由“是的，每天”可知，总是吃早饭，用always。 二、用所给词的适当形式填空答案与解析 1. my / yours 第一空后有名词，用my；第二空单独使用，用yours。 2. usually 频率副词修饰动词gets，放在动词前。 3. Mine 空后无名词，用名词性物主代词。 4. always 频率副词放在be动词之后，行为动词之前？此处is是be动词，always放在is之后。 5. his / hers 第一空后有名词，用his；第二空单独使用，用hers。 6. don't always 频率副词的否定，在动词前加don't。 7. theirs 空后无名词，用名词性物主代词。 8. rarely 频率副词修饰动词watches，放在动词前。 9. Yours 空后无名词，用名词性物主代词。 10. often 频率副词修饰动词play，放在动词前。 11. its 形容词性物主代词，修饰名词toy。 12. never 频率副词修饰动词eat，放在动词前。 13. Mine 空后无名词，用名词性物主代词。 14. sometimes 频率副词可以放在句首或句中。 15. ours / theirs 两句都空后无名词，都用名词性物主代词。 三、句型转换答案与解析 1. is mine 将my pencil改为名词性物主代词mine。 2. don't always always的否定不是在always后加not，而是在动词前加don't。 3. are theirs 将their books改为名词性物主代词theirs。 4. How often does / go 对频率提问用How often。 5. is hers 将her dictionary改为名词性物主代词hers。 6. is always 将never改为always。 7. is ours 将our classroom改为名词性物主代词ours。 8. How often do 对sometimes提问，询问频率。 9. are yours 将your books改为名词性物主代词yours。 10. Do / play 改为一般疑问句，将助动词Do提前。 四、改错题答案与解析 1. my 应改为 mine my是形容词性，不能单独使用，应改为名词性mine。 2. 没有错误 频率副词放在be动词之后是正确的。 3. Your 应改为 Yours Your是形容词性，不能单独作主语，应改为Yours。 4. always not 应改为 don't always 频率副词的否定要在动词前加don't。 5. my 应改为 mine 空后无名词，应用名词性物主代词mine。 6. goes often 应改为 often goes 频率副词放在行为动词之前。 7. it's 应改为 its it's是it is的缩写，此处需要物主代词its。 8. How long 应改为 How often 由答句“Every day”可知问频率。 9. Their 应改为 Theirs Their是形容词性，不能单独使用，应改为Theirs。 10. does never 应改为 never does 或 never smokes 频率副词放在行为动词之前，或放在助动词之后。 五、根据汉语意思完成句子答案与解析 1. my / Yours 第一空后有名词，用my；第二空单独使用，用Yours。 2. How often 询问频率。 3. Their / ours 第一空后有名词，用Their；第二空单独使用，用ours。 4. never 频率副词放在动词之前。 5. Mine 单独使用，用名词性物主代词。 6. usually 频率副词放在动词之前。 7. Your / mine 第一空后有名词，用Your；第二空单独使用，用mine。 8. often 频率副词放在动词之前。 9. its 形容词性物主代词，修饰名词toy。 10. Are / always 一般疑问句将be动词提前，频率副词放在主语之后。 学科网（北京）股份有限公司 $