这位教授专门研究莎士比亚戏剧的主题。

The professor specializes in the ___themes of Shakespeare's plays.

这部歌剧用不同的音乐主题来表现爱情与背叛的冲突。

The opera employs contrasting ___thematics to portray the conflict between love and betrayal.

这部电影的主题探讨了爱与牺牲的永恒话题。

The film's ___themes revolve around the eternal topics of love and sacrifice.