比较级和最高级是形容词和副词特有的语法范畴，表示性质或特征在程度上的差异。但是，在口语里有些名词也有比较级和最高级的形式，同样可表示事物性质的程度差别。１．名词比较级的构成从构成方式看，名词的比较级也和形容词比较级一样，分为简单式和复合式。１）简单式比较 Comparing and superlatives are grammatical categories that are specific to adjectives and adverbs, indicating the degree of difference in nature or characteristics. However, some of the nouns in oral English also have comparative and superlative forms, which can also represent the degree of difference in the nature of things. 1. The composition of nouns comparisons from the perspective of composition, nouns and adjectives comparative level is the same, divided into simple and complex. 1) simple comparison