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Comprehensive studying appreciation expression will offer us the basic foundation of explanation of certain aspects of polite principle scientifically and logically, and will push the development of language theory forward.

答谢言语行为作为人们同常生活中的一种不可缺少的交流沟通方式，其表现形式多样，策略类型丰富，语用功能多样。

This paper concentrates on the study of the similarities and differences between English and Chinese appreciation expressions in respect of sentence structures and pragmatic functions.

文章主要讨论了英汉答谢句在句法结构和语用功能两方面的异同以及产生不同的原因,以期对跨文化交际和外语教学有所裨益。