前人根据不同的目的,从不同的角度,运用不同的理论对处所“在”字句进行了较为深入的研究。目前随着研究方法的改进和研究角度的变换,逐渐从局限于语言结构内部研究到语言内和语言外研究相结合,从共时研究到共时和历时研究相结合,从简单的描写到描写和解释相结合。 According to different purposes, the predecessors used different theories to make a more in-depth study of the “a” sentence in the premises from different perspectives. At present, with the improvement of research methods and the change of research perspective, the research gradually merges from the internal research of linguistic structure to the research of linguistic and linguistic studies, from synchronic study to synchronic and diachronic studies, from simple description to description And explain the combination.