1.一般在词尾直接加er或est,例如,tall-taller-tallest,long-longer-longest
2.以不发音的字母e结尾的单词在词尾直接加r或st,例如,nice-nicer-nicest
3.以辅音字母+y结尾的词,把y变为i,再加er或est,例如,heavy-heavier-heaviest
4.重读闭音节,末尾只有一个辅音字母,双写这个辅音字母,再加er或est,例如,big-bigger-biggest
5.部分双音节词和多音节词分别在原级前加more构成比较级和most构成最高级,例如,slowly-more slowly-most slowly；beautiful-more beautiful-most beautiful
6不规则变化,这个比较多,你平时要自己掌握
原级 比较级 最高级
good better best
many more most
much more most
bad worse worst
old elder/older eldest/oldest
little littler/less(er) littlest/least
ill worse worst
far farther/further farthest/furthest