你知道他在这部电影中扮演的角色吗?
Do you know 【the role 】that he【plays in】the movie （plays应该也可以是played）
【Do you know his role in this film?】
【Do you know which role he played in this film?】
你知道他在这部电影中扮演的角色吗?
Do you know 【the role 】that he【plays in】the movie （plays应该也可以是played）
【Do you know his role in this film?】
【Do you know which role he played in this film?】