语法化是指形成语法的各种因素逐渐“化”为语法内容和语法形式的过程和结果。语法隐喻的产生体现在语法范畴与语义特征的非一致关系上。语法隐喻具有同一所指,不同能指、双向映射、语法域转移、级转移、形式兼意义的变体、增强明晰度和表达力等特点。语法隐喻理论有助于隐喻和认知的研究。 Grammaticalization refers to the gradual formation of various factors of grammar and process of grammatical form and grammar. The generation of grammatical metaphor is reflected in the inconsistent relationship between grammatical category and semantic features. Grammatical metaphor has the same means, different means, two-way mapping, grammatical field transfer, level transfer, the form and meaning of the variant, enhance clarity and expressiveness and so on. Grammatical metaphor theory helps in the study of metaphor and cognition.