Descriptivegrammar and prescriptive grammar both are very important in English studies.
规定语法和描写语法在英语语言研究与教学中占有同等重要的位置。
2
Descriptive adequacy is achieved to the extent that a grammar gives a correct account of a speaker's competence.
当一种语法达到能正确描述一个说话人的能力时，就被认为达到描写上的充分性。
3
Both generative and functional grammars are built on the basis of traditional grammar, drawing on the methodological results of American descriptive linguistics.