5) I have a sister who works in a hospital.

6) I have a sister, who works in a hospital.

7) Tom sold his house which was in downtown.

8) Tom sold his house, which made his father very angry.

9) Romeo and Juliet, which was written by Shakespeare, is popular all over the world.

10) At the Barcelona Olympic Games the Chinese team got 16 gold medals, 12 of which / of which 12 were won by women.

11) There are 54 students in my class, three of which/ of which three come from US.

12) The professor has two sons, both of whom are teaching in the same university.

13) New York is famous for its skyscrapers, the highest of which has more than 100 storeys.

14) As we all know, he studies very hard.

15) As is known to all, he is the best student in our class.

相关高考试题：（2004浙江）

Anyway, that evening, _____ I'll tell you more about later, I ended up staying at Rachel's place.

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

解析： 首先识别本题考查非限制性定语从句，先行词是that evening，虽然是时间名词，

但代替其含义的关系词需在定语从句中做tell you about的宾语，所以使用关系代词which

答案：D 6. Deal with Parts A and B on pages 48 and 49.

Answers:

A 1. Li Dong, who is Chinese, donated more than half of his liver to Amy to save her life.

2. The doctors at the hospital, where Amy spent about two months, tried their best to save Amy. / The doctor at the hospital tried their best to save Amy, who spent two months there.

　3. Amy eats lots of fruit and vegetables, which are good for her health.

　4. Amy sometimes goes for a walk in the afternoon, when it is fine and warm.

5. My uncle, whom I told you about yesterday/about whom I told you yesterday, is an engineer and is working in Beijing.

　6. Mike, whose hobby is traveling, has decided to visit the Great Wall next month.

B. (1) who (2) where (3) which (4) which (5) which (6) which (7) whose (8)when (9) who (10) who