Lǎo shī / zài / kè shàng / jiè shào / le / diàn yǐng / Bái máo nǚ / de / chuàng zuò / bèi jǐng

老师在课上介绍了电影《白毛女》的创作背景。

The teacher introduced the background of the film The White-Haired Girl in class.