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英语中的形容词和副词的原形称为原级，表示“比较……”、“最……”时，要用比较级和最高级。
如：long longer longest
原级 比较级 最高级
1．The black pen is very long. 黑色的钢笔很长。
2．The blue pen is longer than the black one. 蓝色的钢笔比黑色的长。
3．The red pen is the longest of the three. 红色的钢笔是三支中最长的。
一、形容词、副词比较级的用法
表示两者间的比较用比较级。其常见句式有：
1．“A + be +形容词比较级+ than + B” 意思为“A比B更……”。
如：This tree is taller than that one. 这棵树比那棵树高。
注意：①在含有连词than的比较级中，前后的比较对象必须是同一范畴，即同类事物之间的比较。 ②在比较级前面使用much，表示程度程度“强得多”。
如：A watermelon is much bigger than an apple. ③very, quite，too,quite等词一般只能修饰原级，不能修饰比较级。
2．“become + 形容词比较级+ and + 形容词比较级” 是“变得越来越……”的意思，and连接同一个形容词的比较级。
如：It becomes warmer and warmer when spring comes. 春天来了，天气变得越来越暖和了。
注：表示“越来越……”时，若比较级是“原级+ er”构成的，则常用“比较级+ and + 比较级”形式； 若比较级是“more + 原级”构成的，需用“more and more + 原级形式”。
如：Our school is becoming more and more beautiful. 我们的学校变得越来越美丽。
3．在含有or的选择疑问句中，如果有两者供选择，前面的形容词要用比较级形式。
如：Who is taller, Tim or Tom? 谁更高，Tim还是Tom?
练习题：
I.用所给词的适当形式填空。
1. I think this coat is too expensive. I want a ________ (cheap) one.
2. My ________ (old) brother works in a factory. He is two years ________ (old) than I.
3. Can we do more work with ________ (little) time and ________ (few) people?
4. Japan is a little ________ (large) than Germany.
5. The ________ (hard) you work, the ________ (much) you will learn.
6. The man is much ________ (strong) than the other one.
7. He has been ill for a few days. He feels even________ (bad) today.
8. He is getting ________ and ________ (fat).
9. Of the two girls, Lingling is ________ (short).
10. Our city is much ________ (beautiful) than yours.
II. 单项填空。
1. The air in Beijing is getting much ________ now than a few years ago.
A. clean B. cleaner
C. cleanest D. the cleanest
2. Mobile phones are very popular now and they are ________ than before.
A. cheapB. cheaper
C. cheapest D. the cheapest
3. Li Lei ran ________ more slowly than the other boys in the sports meeting.
A. soB. too C. very D. much
4. I can type ________ than I can write by hand.
A. fast B. much faster
C. more fasterD. fastest
5. Cathy did quite ________ in the English competitions, and I did even ________.
A. better; wellB. well; well
C. well; betterD. better; better
6. —Remember, boys and girls, ________ you work, ________ result you will get.
—We know, Miss Gao.
A. the better; the harder
B. the harder; the better
C. the hard; the better
D. the harder; the good
7. Which would you like ________, basketball or football?
A. good B. better
C. best D. well
8. Bob jumps farther than ________ in his class.
A. any other boys
B. the other boys
C. any boy
D. another boy
参考答案：
I. 1. cheaper
2. elder, older
3. less, fewer
4. larger
5. harder, more
6. stronger
7. worse
8. fatter, fatter
9. the shorter
10. more beautiful
II. 1—5 BBDBC 6—8 BBB
