The empirical study testifies the feasibility and efficacy of applying Word Grammar to English gramamr teaching for Business-majored college students in contrast to the effects of Traditional Grammar teaching. The experiment shows that the experimental group performs better than the control group at the general level and the specific levels of register, discourse and grammar. The research indicates that Word Grammar can help studnets better understand the meaning of discourse and real tasks on the ground of Traditional Grammar.% 本研究通过一个学期的实证研究，证明应用词项语法于大学商务英语语法教学是可行和有效的。根据统计，实验组相较于控制组在语域、语篇、语法以及总分水平上有着更显著的提高。实验表明，词项语法可以帮助学生在传统语法的基础上，更好地理解语义和实际任务。
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