成语是一种相沿习用的特殊固定词组,大多是从古汉语衍化、提炼而来的,因此多掌握一些成语,对学习古汉语大有裨益。古汉语中,词类活用现象相当普遍,成语里仍保留着这些特征。①名词活用为动词。如“不衫不履”,“衫”“履”本是名词,这里均作动词,“穿长衫”“穿鞋子”; Idiom is a kind of special fixed phrases that are commonly used in the past. Most of them are derived from ancient Chinese and refined. Therefore, learning more idioms will greatly benefit the learning of ancient Chinese. In ancient Chinese, the use of words was quite common, and these traits still retain these characteristics. 1 The noun is used as a verb. For example, “No shirts do not perform”, “shirts” and “sho” are nouns, and here are verbs, “wearing gowns” and “wearing shoes”;