In the pragmatic practice of the Chinese verb'Xia', we can explore a great amount of different uses , including ones with concrete meanings and ones with abstract functional meanings .But it has been a big question when defining the category of ab-stract meanings of 'Xia'.Hu Xia qing has contributed to the categorization of modern meanings , which is lacking in grammatical analysis.Feng Jie has made some research upon the grammatical meanings of 'Xia', which came to the conclusion as 'directional verbs', but his research also lacks diachronic background.This research aims at providing some support of diachronic analyses to consummate the theory of'directional verbs', by giving out the pragmatic practices and dynamic changes of connection structure on the basis of five books that are belonging to five different periods, via Antconc.
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机译：Possible Negative Regulatory Effects of Antibiotic Production in a Hetrologous System by Sare_4854, a Novel Member of Streptomyces Antibiotic Regulatory Protein Family (SARP) from a Marine Microorganism Salinispora arenicola CNH643 DSM 44819AU Shu, Xiao Zhang, Wei Yu, Jinlong Wu, Shaowen Ma, Yanling Zhu, Minzhe Xia, Sisi Xia, Shichao Zhang, Hao Li, Aiying (aiyli@126.com) Qi, Chao (qichao@mail.ccnu.edu.cn)
