1、一形容词、副词的比较级和最高级的规则变化：1. 单音节形容词或副词后面直接加 -er 或-esttalltallertallest fastfasterfastest2. 以-e 结尾的单音节形容词或副词直接加-r 或-stlargelargerlargest nicenicernicest3. 以-y 结尾的形容词或副词，改-y 为-i 再加-er 或-estbusybusierbusiest earlyearlierearliest4. 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 或-esthothotterhottest bigbiggerbiggest5. 多音节形容词
2、或副词前面直接加 more或 mostdeliciousmore deliciousmost deliciousbeautifulmore beautifulmost beautiful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 glad - more glad , most glad bored - more bored , most boredpleased- more pleased , most pleased二不规则变化good /well-better -bestmany/much-more - m
3、ost little - less - least bad/badly/ill- worse - worstfar -farther, fartherfar -further -furthestold - older -oldestold- elder - eldest形容词、副词的比较级和最高级的句子公式：比较级形容词物体 A + am / are / is + 形比 + than + 物体 B.I am taller than you.Pasta is more delicious than pizza.副词物体 A + 行为动词 + 副比 + than + 物体 B.Cheetahs r
4、un faster than goats.He studies better than me.最高级1）物体 A + am / are / is + the + 形最高级 + 比较范围（ of + 人/物，in +地方）.I am the tallest in the class.Pasta is the most delicious food of the three.2）物体 A + 行为动词 + 副词最高级 + 比较范围（of + 人/物，in + 地方）.Cheetahs run fastest in the world.He studies best of us.一. 词形变换。比较
5、级 最高级large _ _fast _ _easy _ _比较级 最高级wet _ _good _ _important _ _well _ _bad _ _many _ _little _ _far _ _strong _ _patient _ _safe _ _expensive _ _二. 选择填空。1.Birds can fly _, eagles can fly_than birds. They fly _ in theworld. ( high, higher, highest )2. I am _ than my brother, but my little sister is
6、the _ of us. (fat, fatter, fattest )3. Which can swim _, fish or sharks? ( well,better, best )4. The green book is a _ book, but the red oneis much _ than the green one. Its the_ book in the bookshop. (nice, nicer, nicest )5. Look at that boy, he is running _ (fast,faster).6. I think that book is _
7、(good, better) foryou.7. The new library has _ (many, more) books thanthe old one.8. Sally is _ (tall, taller) than her cousin.9. Our school is much _ (large, larger) thanyours.10. Look, Janet is jumping _ (high, higher) thanMike.11Mr Hare runs much _ (fast, faster) thanMr Turtle. Mr Hare neednt run
8、_ (fast, faster) now.12. In the gym, Tommy is playing table tennis _(well, better) than Jimmy.13. This book is very _ (interesting, moreinteresting) , but that one is_ (interesting, more interesting) than it.14. The film is the _ (horrible, more horrible,most horrible) film of all.15. Its summer now
9、. The weather is getting _.(hot and hot, hotter and hotter, hottest and hottest)16. The U.S.A. is one of _ (richer, most rich,the richest) countries in the world.三. 用所给单词的适当形式填空。1. My school is _, but Toms school is_ than mine. And Sallys school is the_. (small)2. Rabbits can run _, but tigers can run_ than rabbits, and cheetahs can run_ of the three. (fast)3.Pig is _, but deer is _ than pig,and elephant is the_ (heavy)4. Im _, but she is _ than me.(beautiful)5. Every day is _. But today is the_ day I have ever had. (busy)6. I think pizza is the _ food of all.(delicious)
