(5)当先行词既指人又指事物时。

They talked about the things and persons that they remembered.

他们谈论了他们所记得的人和事。

(6)在there be句型中。

There's a foreign man that lives in that village.

有一个外国人住在那个村子里。

Ⅱ."介词＋关系代词"引导的定语从句

一、关系代词的选定

如果先行词指事(物)，关系代词就用which，指人用whom。

This is the classroom in which we studied last year.

这就是我们去年学习用的教室。

There are sixty students in our class，twenty of whom are girls.

我们班有六十名学生，其中二十名是女生。

二、介词的选定

1．根据先行词来选用介词。

The reason for which I came here is that I want to get your help.

我来这儿的原因是我想得到你的帮助。

The farm on which I once worked has taken on a new look.

我曾经工作过的农场呈现出一派新景象。

2．根据定语从句中的谓语动词或形容词来选用介词。

The person to whom this letter was addressed died three years ago.

这封信的收信人三年前就去世了。

Volleyball is a sport of which I am very fond.

排球是我很喜欢的运动。

3．根据句意确定介词。

Air，without which man can't live，is really important.

空气确实太重要了，没有它人类就不能生存。

注意：很多情况下关系副词可以用"介词＋which/whom"来代替。

The day when I met the famous pop star was the greatest day of my life.

＝The day on which I met the famous pop star was the greatest day of my life.

见到这位著名歌星的那天是我一生中最重要的日子。

This is a hall where the medical conference will be held.

＝This is a hall in which the medical conference will be held.医学会议将在这个礼堂召开。