在学习英语的过程中，情态动词是非常重要的一部分。其中，“can”是一个常见的表示能力或可能性的情态动词。为了帮助大家更好地理解和掌握“can”的用法，下面是一些精选的练习题。
一、单项选择
1. I ________ swim when I was five years old.
A) could
B) can
C) am able to
D) may
2. She ________ speak three languages fluently.
A) must
B) can
C) should
D) will
3. The weather report says it ________ rain today.
A) may
B) might
C) could
D) all of the above
4. He ________ finish his homework by himself.
A) is able to
B) can
C) both A and B
D) none of the above
二、填空题
5. If you practice hard, you ________ improve your English.
6. It's already ten o'clock. We ________ go home now.
7. In ancient times, people ________ not travel as easily as we do today.
8. She ________ play the piano very well since she was a child.
三、改写句子
9. He has the ability to run fast.
改为：He ________ run fast.
10. They have the chance to win the game.
改为：They ________ win the game.
四、翻译句子
11. 我能帮助你。
_______________
12. 她可能已经到了。
_______________
13. 这个问题他应该可以回答。
_______________
通过这些练习题，希望大家能够更加熟练地运用“can”来表达不同的意思。记住，“can”不仅可以用来表示能力，还可以用来表示可能性哦！继续加油，坚持练习，你的英语水平一定会有所提高的！
