2025年四年级英语下册情态动词may与must用法专项试卷及答案

2025 年四年级英语下册情态动词may 与must 用法专项试卷及答 案 一、单项选择题（每题2 分，共10 题） 1. —______ I borrow your pencil? —Yes, you ______. A. May; may B. Must; must C. May; must 2. You ______ finish your homework before watching TV. A. may B. must C. can 3. ______ I come in? The door is locked. A. May B. Must C. Should 4. She ______ wear glasses because she can’t see clearly. A. may B. must C. might 5. Students ______ talk loudly in the library. A. may not B. must not C. can not 6. —______ I use your phone? —Sorry, it’s broken. A. May B. Must C. Should 7. We ______ wash our hands before eating. A. may B. must C. could 8. ______ I help you carry these books? A. May B. Must C. Shall 9. You ______ return the book to the library tomorrow. A. may B. must C. might 10. It’s raining. You ______ take an umbrella. A. may B. must C. can 二、多项选择题（每题2 分，共10 题） 1. Which sentences are correct? ( ) A. You must not run in the hallway. B. May I have some water? C. He must finishes his work. D. Must I to clean the room? 2. Choose sentences with "may" for permission: ( ) A. May I go to the restroom? B. You may play after dinner. C. It may rain later. D. She may be at home. 3. Where must we be quiet? ( ) A. In the playground B. In the library C. In the cinema D. At a concert 4. When must you wear a uniform? ( ) A. At school B. At a party C. In a restaurant D. At a sports game 5. Which use "must" for necessity? ( ) A. I must drink water every day. B. You must not smoke here. C. He must be tired. D. Must I answer now? 6. Choose polite requests with "may": ( ) A. May I open the window? B. Must I leave now? C. May we start the game? D. You must listen carefully. 7. Rules for a museum visit: ( ) A. You may touch the paintings. B. You must not use flash photography. C. You may eat in the gallery. D. You must stay with your group. 8. Which show possibility? ( ) A. She may come tomorrow. B. You must be joking! C. It must be cold outside. D. May I try it? 9. Correct "must" sentences: ( ) A. We must to hurry. B. You must brush your teeth. C. She must not forget her keys. D. Must they wait here? 10. School rules: ( ) A. Students may use phones in class. B. You must do your homework. C. You may not chew gum in school. D. We must arrive on time. 三、判断题（每题2 分，共10 题） 1. "May" can be used to ask for permission. ( ) 2. "Must" always means something is necessary. ( ) 3. "You may be quiet" is a correct rule for a library. ( ) 4. "Must not" means something is not allowed. ( ) 5. "May I?" is more polite than "Can I?" ( ) 6. "He must goes now" is grammatically correct. ( ) 7. "It must rain tomorrow" shows certainty. ( ) 8. "May" cannot express possibility. ( ) 9. "Must" in questions often sounds demanding. ( ) 10. "You must try this cake!" suggests a strong recommendation. ( ) 四、简答题（每题5 分，共4 题） 1. Write two sentences: one using "may" for permission, one using "must" for necessity. _____________________________________________________________ ___________ _____________________________________________________________ ___________ 2. Explain the difference between "You may leave now" and "You must leave now." _____________________________________________________________ ___________ _____________________________________________________________ ___________ 3. Create a classroom rule using "must not." _____________________________________________________________ ___________ 4. Ask permission to borrow a book using "may," then respond with "yes" and "no." Yes: _____________________________________________________________ __ No: _____________________________________________________________ __ 答案 一、1. A 2. B 3. A 4. B 5. B 6. A 7. B 8. A 9. B 10. B 二、1. AB 2. AB 3. BCD 4. A 5. AB 6. AC 7. BD 8. ABC 9. BCD 10. BCD 三、1. T 2. T 3. F 4. T 5. T 6. F 7. T 8. F 9. T 10. T 四、1. (示例) May I use your pen? / You must wear a seatbelt. 2. "May" gives permission (optional), "must" is a command (required). 3. (示例) You must not talk during the exam. 4. (示例) May I borrow your book? — Yes, you may. / No, you may not.