形容词加er的规则：①一般的直接在词尾加er，如tall-taller,strong-stronger,②以e结尾的，直接加r，如fine-finer,③以辅音字母加y结尾的，先改y为i再加er，如funny-funnier④以结尾，双写最后的字母再加er，如big--bigger,thin--thinner,hot?-hotter，sad--sadder，fat―fatter另外多音节词，在多音节词前加more如：beautiful--morebeautiful，expensive--moreexpensive除此之外，还有几个特殊的单词，它的比较级和最高级都是不规则。如：many/much（原形）-more（比较级）-most（最高级）little/few（原形）-less（比较级）-least（最高级）good（原形）-better（比较级）-best（最高级）bad（原形）-worse（比较级）-worst（最高级）far（原形）--further--furthest一、请写出下列形容词的比较级和最高级。big____________small______________new______________tall____________short______________old______________weak____________strong____________fat______________hot____________cold______________thin______________good______________high______________nice___________bad____________much______________low______________well____________far______________little______________cheap____________easy______________ugly______________heavy____________cute______________fine______________early___________tidy______________bright______________large____________happy_____________pretty______________young______________wet____________clean______________long_____________dirty___________lovely_______________famous__________________boring_______________________interesting__________________important____________________delicious___________________1二、用形容词的适当形式填空。1.Fredisthe__________(short)inhisclass.2.Mybookis________(new)thanmysister’s.3.Thatpieceofchickenisthe___________(heavy)inthefridge.4.Herruleis______(long),andit’sthe_______(long)ofoursall.5.Isafish_________(thin)thanabird?6.Arosetreeisn’t_______(short)thanapeartree.7.Theleopardcanrun_______(fast),butthecheetahcanrun_____(fast)thanit.Itcanrun________(fast)intheworld.8.Isshethe________(old)womanintheworld?9.Whichis_______(big),adinosaurorabluewhale?Thebluewhaleis_________(big)thanadinosaur,itisthe_______(big)animalintheworld.Andelephantisthe________(big)animalonland.10.Myfatherleaveshome_______(early)thanme.11.Thiszooismuch_______(good)thantheoldone.12.Mybrotherismuch_______(ta