关系代词 who,whom 的用法
who 或 whom 均可指代人,但 who 在从句中作主语或宾语,whom 在从句中作宾语;两者在引导限制性定语从句时常可用 that 替换。
作主语时,who/that 不可省略;作宾语时,whom/who/that 可以省略。
例如:
I’ve become good friends with several of the students in my school (who/ whom/that) I metin the English speech contest last year.
我与好几位去年在英语演讲比赛中结识的同校同学成了好朋友。