Unit3语法讲解和练习-2025-2026学年人教版英语七年级下册

人教英语七下Unit3语法讲解和练习 核心语法：物主代词、频率副词 一、语法点1：物主代词 1. 核心概念 物主代词用来表示人或事物的所属关系，分为形容词性物主代词和名词性物主代词两类。 2. 形式与用法对比 人称 形容词性物主代词 名词性物主代词 例句 第一人称单数 my mine This is my racket. = This racket is mine. 第二人称单数 your yours Is this your glove? = Is this glove yours? 第三人称单数 his/her/its his/hers/its That’s his ball. = That ball is his. 第一人称复数 our ours These are our baseballs. = These baseballs are ours. 第二人称复数 your yours Are these your shoes? = Are these shoes yours? 第三人称复数 their theirs Those are their bats. = Those bats are theirs. 3. 用法提示 形容词性物主代词：后面必须跟名词，不能单独使用。 ✅ 正确：This is my book. ❌ 错误：This is my. 名词性物主代词：相当于“形容词性物主代词 + 名词”，可以单独使用。 ✅ 正确：This book is mine. = This is my book. 常用句型： Is this/that... yours? Whose... is this? It’s his/hers/ours/theirs. 二、语法点2：频率副词 1. 核心概念 频率副词用来表示动作发生的频率，回答“how often”引导的问句。 2. 频率从高到低排序 always（总是，100%）> usually（通常，80%）> sometimes（有时，50%）> seldom（很少，20%）> hardly ever（几乎不，5%）> never（从不，0%） 3. 句型位置 放在实义动词之前：I usually jog in the morning. 放在be动词之后：She is always full of energy. 放在助动词/情态动词之后：We can sometimes play basketball after class. 4. 常见频率表达 次数表达：once a week（一周一次）、twice a month（一月两次）、three times a year（一年三次） 时间表达：every day（每天）、on weekends（在周末）、from time to time（偶尔） 三、语法综合练习 一、单项选择（10题） 1. —Is this your basketball? —No, it’s not _____. It’s Tom’s. A. I B. me C. my D. mine 2. I _____ jog in the park near my home in the morning. A. never B. always C. sometimes D. seldom 3. —Whose badminton racket is this? —It’s Sarah’s. It’s not _____. A. my B. mine C. me D. I 4. —How often do you play football? —I _____ play it. I don’t like sports. A. always B. usually C. sometimes D. never 5. These tennis shoes are _____. Yours are over there. A. my B. mine C. me D. I 6. —Do you often play ping-pong? —Yes, I play _____ a week. A. one time B. once C. two time D. twice 7. The baseball is _____. He put his name on it. A. his B. he C. him D. he’s 8. I _____ jog in the evening after work, but I _____ jog when I’m tired. A. usually; never B. never; usually C. sometimes; always D. always; sometimes 9. —Are these our baseballs? —No, they’re not _____. They belong to Emma and Ella. A. our B. ours C. us D. we 10. She is _____ full of energy after jogging. A. always B. never C. seldom D. sometimes 二、用括号内所给单词的适当形式填空（10题） 1. Is this baseball glove ______ (you)? 2. Whose badminton racket is this? I think it’s Han Lin’s. ______ (he) has “HL” on it. 3. Do you often play ping-pong? Yes, I play ______ (one) a week. 4. How often do you play football? I ______ (seldom) play it. 5. I love jogging! I ______ (always) jog in the park near my home in the morning. 6. A: Dad, where are my tennis shoes? And Tom’s? B: Yours are right here. ______ (he) are over there. 7. A: Whose badminton racket is that? It looks just like mine! B: It’s Sarah’s. It’s not ______ (you)! 8. A: Who does this T-shirt belong to? Is it yours? B: Yes, it’s ______ (I). Thanks! 9. A: Are these our baseballs? B: No, they’re not ______ (we). They belong to Emma and Ella. They’re ______ (they). 10. I ______ (usually) jog in the evening after work, but I ______ (never) jog when I’m tired. 三、补全对话（2篇） 对话1 mine, yours, his, hers, ours A: Hi, Lisa! Is this badminton racket ______? B: No, it’s not ______. I think it’s Jane’s. That’s ______ favourite sport. A: And whose baseball is this? B: It’s Tom’s. ______ is in his bag. A: Are these tennis shoes ______? B: Yes, they’re ______. We bought them last week. 对话2 always, usually, sometimes, seldom, never A: How do you keep fit? B: I love jogging. I ______ jog in the park near my home in the morning. A: Do you jog in the evening too? B: I ______ jog after work, but I ______ jog when I’m tired. A: How often do you play badminton? B: I play it twice a week, ______ at weekends. A: Do you ever play football? B: No, I ______ play it. I don’t like team sports. 四、按要求改写句子（10题） 1. This is my tennis racket.（改为同义句） This tennis racket is ______. 2. I usually jog in the morning.（对划线部分提问） ______ ______ do you jog in the morning? 3. These are our baseballs.（改为同义句） These baseballs are ______. 4. She always feels tired after work.（改为否定句） She ______ ______ feels tired after work. 5. How often do you play ping-pong?（用once a week回答） I play ping-pong ______ ______ ______. 6. Is this your basketball?（作否定回答） No, ______ ______. 7. They sometimes play football after class.（对划线部分提问） ______ ______ do they play football after class? 8. That is his badminton racket.（改为同义句） That badminton racket is ______. 9. We never go swimming in winter.（改为一般疑问句） ______ you ______ go swimming in winter? 10. The gloves are hers.（对划线部分提问） ______ gloves are these? 四、答案与解析 一、单项选择 1. D 解析：名词性物主代词mine指代“my basketball”，单独使用。 2. B 解析：根据语境“喜欢慢跑”，用always表示“总是”。 3. B 解析：名词性物主代词mine指代“my racket”。 4. D 解析：根据“不喜欢运动”，用never表示“从不”。 5. B 解析：名词性物主代词mine指代“my tennis shoes”。 6. B 解析：“once a week”是固定表达，意为“一周一次”。 7. A 解析：名词性物主代词his指代“his baseball”。 8. A 解析：句意为“我通常下班后晚上慢跑，但累的时候从不跑”，逻辑通顺。 9. B 解析：名词性物主代词ours指代“our baseballs”。 10. A 解析：句意为“慢跑后她总是精力充沛”，用always符合语境。 二、用括号内所给单词的适当形式填空 1. yours 2. His 3. once 4. seldom 5. always 6. His 7. yours 8. mine 9. ours; theirs 10. usually; never 三、补全对话 对话1 A: Hi, Lisa! Is this badminton racket yours? B: No, it’s not mine. I think it’s Jane’s. That’s her favourite sport. A: And whose baseball is this? B: It’s Tom’s. His is in his bag. A: Are these tennis shoes ours? B: Yes, they’re ours. We bought them last week. 对话2 A: How do you keep fit? B: I love jogging. I always jog in the park near my home in the morning. A: Do you jog in the evening too? B: I usually jog after work, but I never jog when I’m tired. A: How often do you play badminton? B: I play it twice a week, sometimes at weekends. A: Do you ever play football? B: No, I never play it. I don’t like team sports. 四、按要求改写句子 1. mine 2. How often 3. ours 4. never 5. once a week 6. it isn’t 7. How often 8. his 9. Do; never 10. Whose ( 1 ) 学科网（北京）股份有限公司 $