③ This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。

非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数。

① He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。

② Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。

③ Solid changes directly to gas, which is called sublimation; gas changes directly to solid, which is called desublimation.

固态直接转为气态，这现象称为升华；而气态直接转为固态，这一现象成为凝华。

说明：引导非限制性定语从句的先行词只能是which，不可以用that。

2．定语从句中，引导词只能用that，不可以用which的情况：

a)　在there be 句型中，只用that，不用which。

There's a restaurant that serves coffee and doughnuts. 有一家餐馆提供咖啡和甜甜圈。

b)　以something, everything, anything, nothing, the one,等作被修饰词（即：先行词）时，引导词只用that，不用which。

Mr. Pan feels like teaching his students all that he knows. 潘老师恨不得把他知道的一切都教给学生。

There's something that I don't quite understand in your talk. 在你的讲座中，有的东西我没有完全听懂的。

The finger I put in the mixture(混合物) is not the one that I put into my mouth. 我插入混合物中的手指并不是我放入嘴里的手指。

c)　当先行词（即：被修饰的词）被all, any, no, little, much, every, the only(唯一的), the very(恰恰；正)，just the...修饰时，即：含有上述这些词的时候，只用that。

① He had spent all the money (that) his mother gave him.他把他妈妈给他的钱全花光了。

② If there are any clothes (that) you do want to buy, just let me know. 如果有什么衣服你真的想买的话，直接告诉我。

③ China is no longer the country that it used to be. 中国不再是他以前的那个国家了。

d)　先行词为序数词、数词、形容词最高级时，只用that。

① I'll never forget the first lesson (that) you gave us. 我永远忘不掉你给我们上的第一堂课。

② The two sheep that produce milk are female sheep. 那两头产奶的羊是母羊。

③ Our English teacher is the best teacher (that) I've ever met. 我们的英语老师是我见过的最好的老师。

e)　先行词（即：被修饰的词）既有人，又有物时。

The foreign guests spoke highly of the children and their shows that they saw in the kindergarten.

外国客人对幼儿园里所看到的孩子以及其表演给与了高度赞扬。

3．定语从句中，引导词只能用which，不可以用that的情况：

1）用于"非限制性定语从句"。

She always praised her son, which made the other mothers unhappy.她总是夸奖儿子，这使得其他母亲不高兴。

2）介词位于引导词之前。

① This is the house in which I was born. 这就是我出生的房子

=This is the house where I was born.. =This is the house that I was born in.

② The students are learning different subjects, all of which are of importance.学生们学习不同的科目，这些科目都很重要。

4．如果在such和same后面， 一般用关系代词as。

　① I seldom see such people as you describe(描述) in your composition.

　② Please lend me the same tools(工具) as were used a few days ago.

定语从句练习50道精选题

1. The place _______interested me most was the Children's Palace.

　A. which B. where C. what D. in which

2. Do you know the man _______?

A. whom I spoke B. to who spoke C. I spoke to D. that I spoke

3. This is the hotel _______last month.

A. which they stayed B. at that they stayed C. where they stayed at D. where they stayed

4. Do you know the year ______the Chinese Communist Party was founded?

A. which B. that C. when D. on which

5. That is the day ______I'll never forget.

A. which B. on which C. in which D. when

6. The factory ______we'll visit next week is not far from here.

A. where B. to which C. which D. in which

7. Great changes have taken place since then in the factory _______we are working.

A. where B. that C. which D. there

8. This is one of the best films _______.

A. that have been shown this year B. that have shown C. that has been shown this year D. that you talked

9. Can you lend me the book ______the other day?

A. about which you talked B. which you talked C. about that you talked D. that you talked

10. The pen ______he is writing is mine.