【问】 我知道起替代作用的that(those)可用介词短语来限制，例如The population of China ismuch greater than that of Japan.但不知能否用定语从句来限制。如能，那么在定语从句中使用什么样的关系代词?请举例说明，我没有查到这方面的例子。

【答】 起替代作用的that(those)可用定语从句来限制。that的定语从句可使用which作关系代词，不能使用that和who。对于those，则可使用those which，those that，those who，those [ ]：

1. The topic of cellular physiology is regrettably among those which lie outside the compassof this book. (CGEL)

遗憾的是，细胞生理学这一题目不在本书范围之内。

2. More modern methods of horticulture have replaced those that prevailed at the time ofthe college's foundation. (CGEL)

更加现代化的园艺方法已经取代了大学刚建立时常用的那些方法。

3. He admires those who succeed. (Leech)

他羡慕那些获得成功的人。

4. The butter we import is less expensive than that(which) we produce ourselves(= 'thebutter which') . (Leech)

我们进口的黄油要比我们自己生产的黄油便宜。

5. These flowers are better than those (which) we planted last year (= 'the flowerswhich').

这些花要比我们去年种的花好看。

6. Was it ____the professor regarded with such contempt?

A. them who B. them whom

C. those D. he who(TOEFL，78.4-6)

7. The problem confronting us today is quite similar to ______(it，that，one) which Amer-ica faced in the 1930's.

8. A force is that which tends to change the motion，size or shape of a body.

力就是具有改变物体运动、尺寸或形状的趋势的物理量。

9. ... The ultimate type of resistance is that in which the insect changes its normal physiol-ogy so that it is no longer sensitive to the insecticide. (CBSE)

抗药性的最终形式是昆虫改变其正常的生理状态，从而对杀虫剂不再敏感。