在英语学习中，情态动词是非常重要的一部分。其中，“can”是最常用的情态动词之一，它主要用于表示能力、可能性或请求等。为了帮助大家更好地掌握“can”的用法，下面我们将通过一些练习题来加深理解。
一、基础练习
1. I _______ swim since I was five years old.
A. can B. could C. may D. might
2. She _______ speak three languages fluently.
A. can B. could C. may D. might
3. It _______ rain later today, so bring an umbrella.
A. can B. could C. may D. might
4. You _______ borrow my book if you promise to return it tomorrow.
A. can B. could C. may D. might
5. He _______ come to the party tonight, but he's not sure yet.
A. can B. could C. may D. might
二、进阶练习
6. The teacher said that we _______ use dictionaries during the test.
A. can B. could C. may D. might
7. If you work hard, you _______ achieve your dreams.
A. can B. could C. may D. might
8. They _______ have arrived by now, but I'm not sure.
A. can B. could C. may D. might
9. The weather forecast says it _______ snow this evening.
A. can B. could C. may D. might
10. She _______ be at home now, as she didn't answer the phone.
A. can B. could C. may D. might
三、综合练习
11. Can you _______ help me with this problem?
A. please B. indeed C. surely D. really
12. I _______ finish my homework before dinner.
A. can B. could C. may D. might
13. He _______ visit us next week, depending on his schedule.
A. can B. could C. may D. might
14. The children _______ play outside until it gets dark.
A. can B. could C. may D. might
15. We _______ go to the beach tomorrow, weather permitting.
A. can B. could C. may D. might
通过以上练习题，我们可以看到，“can”不仅用于表达能力，还可以用来表示可能性或请求。希望大家能够通过这些题目巩固所学知识，并灵活运用到实际交流中去。继续努力，相信你们会在英语学习之路上越走越远！
