lǎo shī / xuǎn / le / yí duàn / yuàn běn / ràng / xué sheng / liǎo jiě / gǔ dài / xì qǔ / de / biǎo yǎn fāng shì

老师选了一段院本，让学生了解古代戏曲的表演方式。

The teacher selected a passage from an opera script to help the students understand how ancient opera was performed.