在英语学习中，形容词和副词的变化形式是非常重要的一部分，其中比较级和最高级是常见的语法点。通过掌握这些变化规则，我们可以更准确地表达事物之间的差异或程度。下面是一些关于比较级和最高级的练习题，帮助大家巩固这一知识点。
一、选择题
1. The book is ________ than the one I read last night.
A. interesting
B. more interesting
C. most interesting
2. She runs ________ in her class.
A. faster
B. fastest
C. fast
3. This river is ________ than that one.
A. wide
B. wider
C. widest
4. He is ________ boy in his family.
A. taller
B. tallest
C. tall
5. Which is ________, coffee or tea?
A. delicious
B. more delicious
C. most delicious
二、填空题
6. My brother is ________ (young) than me.
7. The movie was ________ (boring) than expected.
8. Who is ________ (popular), Tom or Jerry?
9. The weather today is ________ (cold) than yesterday.
10. Which country has ________ (long) coastline, Japan or Australia?
三、改写句子
11. John is the tallest student in his school.
→ John is taller than ________ student in his school.
12. Mary is more careful than her sister.
→ Mary's sister is not as careful as ________.
13. The blue car is faster than the red one.
→ The red car is not as fast as ________.
14. This is the most beautiful park I have ever visited.
→ This park is more beautiful than ________.
15. He is the smartest person I know.
→ He is smarter than ________.
四、判断题
16. "The sun is hotter than the moon." 这句话是对的。（√/×）
17. "She is the happiest girl in her family." 这句话中的"happy"用的是最高级形式。（√/×）
18. "This is a more interesting story than that one." 这句话中的"more interesting"表示两者之间的比较。（√/×）
19. "He runs fastest in his team." 这句话中的"fastest"表示三者或以上之间的比较。（√/×）
20. "The book is very interesting." 这句话中的"interesting"是原级形式。（√/×）
通过以上练习题，希望大家能够更好地理解和运用形容词和副词的比较级和最高级。记住，在使用时要注意形容词和副词本身是否能直接加"er"或"est"，或者需要借助"more"和"most"来构成比较级和最高级。不断练习，相信你的英语水平一定会有所提高！
