1. A和B一样
A is as…as B.
Eg:
A is as tall as B. (译: A和B一样高)
A study as hard as B. (译: A和B一样学习努力)
You are as thin as lightning. (你像闪电一样瘦)
2. A比B更…
A is taller than B. (A比B更高)
A study harder than B. (A比B学习更努力)
在英语中，修饰比较级时，需要用特定的副词。以下是常见的选择：
| 副词 | 功能与含义 | 例句 |
| much | 非常，…得多（强调程度大） | She is much shorter. （她矮得多。） |
| a lot | 很，…得多（与much同义，更口语化） | She is a lot shorter. （她矮很多。） |
| a little / a bit | 稍微，…一点（强调程度小） | She is a little shorter. （她稍矮一点。） |
| far | …得多（语气比much更强，更正式） | This is far better. （这个好得多。） |
| even | 更加，更…（用于进一步加强比较） | Tomorrow will be even colder. （明天会更冷。） |
3. 最高级
C是群体里最…
C is the tallest in the class. (C是班上最高的)
比较级和最高级-规则变换
| 形容词/副词 | 原型 | 比较近 | 最高级 |
| 单音节 | hard | harder | hardest |
| -e结尾的单音节 | nice | nicer | nicest |
| 元音+辅音结尾的单音节 | fat | fatter | fattest |
| -y结尾双音节 | happy | happier | happiest |
| 双音节或多音节 | beautiful | more beautiful | most beautiful |
比较级和最高级-不规则变化
| 原型 | 比较级 | 最高级 |
| good/well | better | best |
| bad/badly/ill | worse | worst |
| many/much | more | most |
| little | less | least |
| far | farther/further | farthest/furthest |
| old | older/elder | oldest/eldest |