he fled,slamming the door behind him 为什么有两个时态

学习 时间:2026-11-15 12:05:13 阅读:4725
he fled,slamming the door behind him 为什么有两个时态When Mrs.Richards walked towards him,he fled,slamming the door behind him,这里fled为过去式,slamming为进行时,为什么出现两种时态