This is the book (which/that ) you want.

The buildi ng which//that sta nds n ear the river is our school.

The room in which there is a machine is a workshop.( 介词后面的which 不能省略) The house (which/that) we live in is n ot large.

This is the watch (which/that ) he was looking for.

六、that和which都可以修饰表示物的先行词，但是下列情况只能用that.

先行词为不定代词all, few, little, much, everything, nothing, anything 等.

All (that) you have to do is to practise every day. There isn ' t much (that) I cando.

Tell us everyth ing that you know, please.

Is there anything that you don ' t understand?

先行词被序数词或形容词的最高级所修饰时.

The first less on (that) I learned will n ever be forgotte n.

This is the best film (that ) I have ever see n.

先行词被all, any, every, few, little, no, some, much 等不定代词修饰时.

I have read all the books (that) you gave me.

先行词被the only, the very, the last, the same 等修饰时.

This is the very book that I want to read.

This is the same book that I want to read.

This is the last time ( that ) I shall give you a less on.

This is the only thing that I can remember.

七、由when引导的定语从句，修饰表示时间的先行词，when为关系副词，做定语从句的时间状语。

I still remember the day when I first came to Beijing.

I still remember the day on which I first came to Beijing.

(介词+ which可以代替when)

I ' ll never forget the time when we worked on the farm.

I remember the days which//that we spe nt together.

八、由where引导的定语从句，修饰表示地点的先行词，where为关系副词，做定语从句的地点状语。

This is the place where we lived for five years.

The factory where his father works is in the west of the city.

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