关系代词which在定语从句中只能指物，但既可以做宾语也能作主语 例：1）They planted some trees which didn’t need much water. (作主语) 2）The fish (which) we bought this morning were not fresh. (作宾语) 3. 关系代词who，whom的用法
关系代词who,whom 只能指人，在定语从句中分别作主语和宾语 例：1）The foreigner who helped us yesterday is from USA.(作主语) 2）The person to whom you just talked to is Mr. Li. (作宾语)、 4. 关系代词whose在的用法
关系代词whose为关系代词who的所有格形式，其先行词既可以是人也可以
是物，whose和它所修饰的名词在定语从句中既可以做主语也可以做宾语。 例：1）This is the scientist whose name is known all over the world. (指人，作
主语)
2） The room whose window faces south is mine. (指物，作主语) 3）He has written a book whose name I’ve forgotten. (指物，作宾语) 5. 关系副词when的用法
关系副词when在定语从句中作时间状语
例：1）I’ll never forget the time when (=during which) we worked on the farm. 2) Do you remember the afternoon when (=on which) we first met three
years ago?
6. 关系副词where在定语从句中的用法 关系副词where在定语从句中做地点状语
例：1）This is the place where( =at/ in which) we first met. 2) The hotel where (= in which ) we stayed wasn’t very clean. 7. 关系副词why在定语从句中的用法 关系副词why在定语从句中作原因状语
例: 1). I didn’t get a pay rise, but this wasn’t the reason why(= for which) I left. 2). The reason why (=for which) he has late was that he missed the train.
Unit 5 Nelson Mandela – a modern hero
一、重点词汇
1. selfish 自私的