transformational grammar
noun🔊/ˌtrænsfəˌmeɪʃənl ˈɡræmə(r)/
🔊/ˌtrænsfərˌmeɪʃənl ˈɡræmər/
[uncountable] (abbreviation TG)
(a type of grammar that describes a language as a system that has a deep structure which changes in particular ways when real sentences are produced 转换语法（将语言描述为有深层结构的系统，在产出真实句子时按特定方式转换）