宋杂剧
宋杂剧-
元杂剧的四折体制来源于宋杂剧四段演出体制的直接影响，内在结构思想则源于我国伟大的诗学传统。
The system of Yuan-zaju is root in the Song-zaju which had four playing parts . The thought of struction of Yuan-zaju is root in the great poetics tradition of China .
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戏文是异于宋金杂剧、始趋成熟的戏剧形式。
Xiwen ( a drama script ) is a mature form of drama different from Zaju ( a variety play or poetic drama ) in the Song and Jin Dynasties .