Based on analyzing theories and the freshmen's grammatical competence, the dissertation attaches importance to combining theories with practice.

在分析理论及大学生语法能力的基础上，作者着重于将理论与实践结合起来。

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Theories derive from practice as well as guide them, especially in the economic field. Therefore, the third method is substantial proof combining theories with practice.

理论来源于实践又必将指导实践，尤其在经济领域更是如此，因此，理论联系实践的实证分析法是本文的第三种研究方法。

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We conduct the study on the basis of cognitive, psycholinguistic and pedagogical theories, combining the theories with years of teaching practice.

我们这项研究是以认知学、语言心理学、教育学理论为基础，并把这些理论和多年来的教学实践相结合来进行的。

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