形容词的比较级和最高级大多数形容词（性质形容词）和副词有比较级和最高级的变化，即原级、比较级和最高级，用来表示事物的等级差别。原级即形容词的原形，比较级和最高级有规则变化和不规则变化两种。1) 规则变化 :单音节词和少数双音节词，加词尾-er，-est 来构成比较级和最高级。构成法 原级 比较级 最高级A 一般单音节词未尾加-er,-est great(巨大的) greater greatest , tall(高的) taller tallestB 以不发音的 e 结尾的单音词和少数以- le 结尾的双音节词只加-r,-stnice(好的) nicer nicestlarge(大的) larger largestable（有能力的) abler ablestC 以一个辅音字母结尾的闭音节词，双写结尾的辅音字母，再加-er，-est big(大的) bigger biggesthot 热的) hotter hottestD "以辅音字母+y"结尾的双音节词，改 y 为 i，再加 -er，-esteasy(容易的) easier easiestbusy(忙的) busier busiestE 少数以-er，-ow 结尾的双音节词末尾加-er，-estclever(聪明的) cleverer cleverest narrow(窄的) narrower narrowestF 其他双音节词和多音节词，在前面加 more，most 来构成比较级和最高级important(重要的)more importantmost importanteasily(容易地)more easilymost easily2) 不规则变化原级 比较级 最高级good(好的)/ well(健康的) better bestbad (坏的)/ ill(有病的)worse worstold (老的) older/elder oldest/eldestmuch/many(多的) more mostlittle(少的) less leastfar (远的) farther/further farthest/furthest3)as + 形容词或副词原级 + as ,在否定句或疑问句中可用 so… as。He cannot run so/as fast as you.4）用表示倍数的词或其他程度副词做修饰语时，放在as 的前面。This room is twice as big as that one.Your room is the same size as mine.5) 倍数+ as + adj. + as <=> 倍数+ n. + ofThis bridge is three times as long as that one.This bridge is three times the length of that one.Your room is twice as large as mine.Your room is twice the size of mine.6)比较级形容词或副词 + thanYou are taller than I.They lights in your room are as bright as those in mine.注意：(1）要避免重复使用比较级。(错) He is more cleverer than ...
