2．意义及作用

关系代词 先行词 在从句中充当的成分 who 人 主、宾 whom 人 宾 which 物 主、宾 that 人或物 主、宾、表 whose 人或物 定 as 人或物 主、宾

Is he the man who/that wants to see you？他是那个想见你的男人吗？(who/that在从句中作主语)

He is the man whom/that/who I saw yesterday.

他就是我昨天见的那个人。(whom/that/who在从句中作宾语)

The package (which/that) you are carrying is about to come unwrapped.你拿的那个包裹快要散开了。(which/that在从句中作宾语)

The girl whose parents are both teachers is working hard.这个父母都是教师的女孩学习很刻苦。(whose表示那个女孩的，在从句中作定语)

He lives in a room whose window faces south.

他住在那个窗户朝南的房子里。(whose表示那个房子的，在从句中作定语)

3．定语从句先行词为事或物时，只能用that不用which引导的情况：

(1)先行词是最高级或被最高级修饰时。

That is one of the most interesting books that are sold in the bookshop.

那是这家书店出售的最有趣的书之一。

(2)先行词是序数词或被序数词修饰时。

The first thing that we should do is to get some food.

我们该做的第一件事是弄点吃的。

(3)先行词是不定代词all，few，little，much，anything，nothing，something等时。

Nothing that the teacher does doesn't influence his students.老师所做的事情没有不影响到学生的。

(4)先行词既有人又有物时。

The writer and his novel that you have just talked about are really well known.

你刚才谈起的那位作家以及他的小说确实很出名。

(5)先行词被the only，the very，no，one of，few，little，all，every等修饰时。

My necklace is not the only thing that's missing.