形容词比较级和最高级
形容词、副词的比较级和最高级的变化规律：
1. 单音节形容词或副词后面直接加-er
tall—taller fast—faster
2. 以-e结尾的单音节形容词或副词直接加-r
large—larger nice—nicer
3. 以-y结尾的形容词或副词，改-y为-i再加-er
busy—busier early—earlier
4. 形容词或副词是重读闭音节时，双写最后的辅音字母，再加-er
hot—hotter big—bigger
5. 多音节形容词或副词前面直接加more
delicious—more delicious
beautiful—more beautiful
6. 不规则变化
good (well)—better bad (badly)—worse
不规则变化
少数单音节词前面加more-, most- 构成比较级和最高级
tired---more tired, most tired
fond---more fond, most fond
glad---more glad, most glad
bored---more bored, most bored
pleased---more pleased, most pleased
good/well----better, best
bad/badly/ill---worse,worst
many/much----more,most
little----less, least
far---farther/farthest, further,furthest
下列形容词和副词的比较级和最高级有两种形式
Cruel---crueler, cruelest/ more cruel, most cruel
Strict---stricter,strictest/ more strict, most strict
Friendly---friendlier, friendliest/ more friendly, most friendly
Clever---cleverer, cleverest/ more clever, most clever
下列形容词和副词没有比较级和最高级（即表示“最高程度”或“绝对状态”的形容词和副词没有比较级和最高级）
Empty, wrong, perfect, unique, extreme, excellent, favourite, true, right,correct, extremely 等。