形容词与副词的比较级
大多数形容词（性质形容词）和副词有比较级和最高级的变化，即原级、比较级和最高级，用来表示事物的等级差别。

原级即形容词的原形，比较级和最高级有规则变化和不规则变化两种。

1)．规则变化
单音节词和少数双音节词，加词尾-er，-est来构成比较级和最高级。

2). 不规则变化
注意：双音节副词的比较级一般在前加 more/最高级在前加 most：
more loudly, clearly, quietly/ most clearly, quietly, loudly.
一、写出下列形容词与副词的比较级与最高级形式：
long _______ ________ wide ________ ________ thin ________ ________ heavy ________ ___ __________ slow _______ _______ few_________ _______ short ________ ________ far ________ ________ quickly happy _______ ________careful ______ _____ ___________
二、用所给词的正确形式填空：
1. She will be much ____________ (happy) in her new class.
2. Jack sings ___________ (well), he sings ____________ (well) than Tom, but Mary sings_____ ________ (well) in her class.
3. His sister is two years _____________ (young) than him.
4. This ruler is twice as _____________ (long) as that.
5. The _________ (cheap) bags are usually the best ones.
6. Gold is much ____________ (expensive) than iron.
7. Of the three girls, I find Lucy is ____________ (clever).
8. John’s parents have four daughters, and she is _____________ (young) child.。