本文从言后行为、社会心理和系统功能语言学语境理论视角探讨了L 2角色扮演的原理与效用。

This paper explores the principles of L2 role-play and investigates its experimental effects from a perspective of perlocutionary ACTS, socio-psychology and systemic functional theory of context.

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权力制衡原理是亘古不变的规律，孟德斯鸠有言：“一切有权力的人都容易滥用权力，这是万古不变的经验。

The principle of balance of power is an invariable rule. Montesquieu ever said:"all the people who have the power are prone to abuse of the power. This is changeless experience."

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三言在汉魏兴衰的原因可以归结为表现功能和体式原理两方面，并且与七言体有密切的关系。

This article, from the perspectives of the function and form, ferrets out the rise and decline of the trisyllabic verse in Han and Wei dynasties and the close relation to the heptasyllabic verse.

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