Whom did you meet at the party last night?（你昨晚在聚会上遇见了谁？） The man whom you saw just now is my teacher.（你刚才看到的那个人是我的老师。）

She is the girl whom I helped on the street.（她就是我在街上帮助过的那个女孩。）

Whom are you waiting for at the bus stop?（你在公交车站等谁？） The book to whom this pen belongs was lost.（这支钢笔所属的那本书丢了 。

这里用whom稍显正式且书面，口语中常用which替代） Whom did he send the letter to?（他把信寄给谁了？） The woman whom we visited yesterday is very kind.（我们昨天拜访的那位女士很和蔼。）

I don't know whom he will invite to his birthday party.（我不知道他会邀请谁参加他的生日派对。）

Whom can we turn to for help in this situation?（在这种情况下我们能向谁求助？） The person whom you should talk to is in the office.（你应该和他谈话的那个人在办公室里。）

Whom have you chosen as your partner for the project?（你选了谁作为你这个项目的搭档？） He is the boy whom I played football with last weekend.（他就是我上周末一起踢足球的那个男孩。）

Whom did they see at the movie theater?（他们在电影院看到了谁？） The lady whom you mentioned is my mother's friend.（你提到的那位女士是我妈妈的朋友。）

Whom does this new dress belong to?（这条新裙子是谁的？） I wonder whom she will marry in the future.（我想知道她将来会嫁给谁。）

Whom did you borrow this interesting book from?（你从谁那里借了这本有趣的书？） The man whom she fell in love with left the city.（她爱上的那个男人离开了这座城市。）

Whom are you going to introduce to us?（你打算给我们介绍谁？） We should find out whom is responsible for this mistake.（我们应该找出谁对这个错误负责。

不过在现代英语尤其是口语中，这里用who更常见，但whom语法上也正确 ）