Unit 5 Green neighbourhood语法精练（含解析） ———情态动词专题（can/could/may/should/must） 一、单项选择（每题1分，共20分） 从A、B、C、D四个选项中选出最佳答案。 1. —_____ you ride a bicycle We need someone for the cycling club. —Yes, I can. A. Can B. Could C. May D. Must 2. You _____ litter in the park. It’s everyone’s duty to keep it clean. A. can’t B. mustn’t C. shouldn’t D. may not 3. —_____ I borrow your umbrella It’s raining outside. —Certainly. Here you are. A. Must B. May C. Should D. Need 4. When she was five, she _____ draw very well, but now she’s even better. A. can’t B. couldn’t C. mustn’t D. shouldn’t 5. We _____ turn off the tap after washing hands. It’s a simple way to save water. A. can B. may C. should D. could 6. The traffic light is red. We _____ cross the road now. A. can B. may C. must D. mustn’t 7. —_____ you help me plant these trees They’re too heavy. —Of course! Let’s do it together. A. Can B. Must C. Should D. Need 8. You _____ park in the green area. It’s for emergency vehicles only. A. can B. must C. mustn’t D. could 9. He _____ speak English when he studied in the UK, but now he’s a bit rusty. A. can B. could C. may D. must 10. —_____ I leave the classroom before the bell rings —No, you must wait for the teacher’s permission. A. Can B. May C. Must D. Should 11. We _____ protect wildlife to keep the ecosystem balanced. A. can B. must C. may D. could 12. The man _____ be a volunteer. He’s always helping with community clean-ups. A. can B. may C. must D. should 13. —_____ we start the recycling project next week —Yes, let’s make a plan first. A. Can B. May C. Shall D. Must 14. You _____ wear a mask in crowded places. It’s a good health habit. A. can B. may C. must D. could 15. We _____ reduce waste by using reusable bags. A. can B. should C. may D. could 16. —_____ I take this book back to my dormitory —No, you can’t. All books must stay in the library. A. Can B. May C. Must D. Should 17. Students _____ follow the lab rules when doing experiments. A. can B. must C. may D. could 18. —_____ you play the piano I hear there’s a talent show next month. —A little, but I’ll practice more. A. Can B. Could C. May D. Must 19. Drivers _____ stop at red lights. It’s the law. A. can B. must C. may D. could 20. —_____ I have a look at your new plant seeds They look interesting. —Sure, here you go. A. Can B. May C. Must D. Should 二、句型转换（每题2分，共10分） 按要求完成句子。 1. She can sing and dance.（改为一般疑问句） _____ _____ sing and dance 2. We should separate waste into different bins.（改为否定句） We _____ _____ waste into different bins. 3. He must be in the garden.（改为一般疑问句并作否定回答） _____he_____in the garden No,_____ _____. 4. They may visit the recycling centre next week.（对划线部分提问） _____ _____ they _____ next week 5. I could use old clothes to make bags last year.（改为一般疑问句并作肯定回答） —_____ _____ use old clothes to make bags last year —Yes, _____ ... ...
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