After the teacher gave an explanation,Jim,_____ his mistake,corrected his answer．A．realizing B．realized C．having been realized D．he realized答案是A 我想问一下为什么realize用v-ing形式 correct就用v+ed形式呢

主句 Jim corrected his answer,时间状语从句 After the teacher gave an explanation
realizing his mistake = (After the teacher gave an explanation) Jim realized his mistake
----- 省略主语 用动名词代替 句子是一种固定用法,（Jim realized his mistake) realizing his mistake