关系代词的用法关系代词在定语从句中做主语，宾语，表语，定语等。常用的关系代词有 who ,whom ，whose， that, which， as 等关系代词有三个作用：代替先行词;在定语从句中做句子成分；连接先行词与定语从句This is an old computer 。it works much slower这是一台老式电脑。它工作起来速度较慢This is an old computer which∕ that works much slower这是一台工作速度较慢的老电脑。普 通 代 词 只 起 替 代 作 用 ， 如 在 上 例 中 it 替 代 an old computer ,而关系代词除可以替代 an old computer 外，还可以引导定语从句 those who break the rules shall be punished违反制度的人将会受到惩处who∕whom 的用法：两者都可指人。Who 在定语从句中做主语，宾语,表语，whom 在主语从句中做宾语，表语。Women who drink more than two cups of coffee a day have a greater chance of having heart disease than those who don’t每天喝超过两杯咖啡的妇女与那些不喝这么多的咖啡的妇女相比患心脏病的可能性要大In this accident ,the number of people who died reached as many as 25 在这次事故中,死亡人数多达 25 I have many friends to whom I am going to send postcardsWhose 的用法 whose 指人也指物，在定语从句中做定语Your are the only one whose advice he might listen to 只有你的建议他才可能会听I’d like a room whose window looks out over the sea 我想要一个窗户朝向大海的房间Which 的用法 which 一般指物,在定语从句中做主语,宾语，间或做定语The river which runs through the centre of the city was polluted seriously 穿过市中心的那条河遭到了严重的污染They stayed with me for three weeks during which time they drunk all the wine I had 他们和我一起待了三周，这期间他们喝光了我所有的酒That 的用法 that 指人也指物，在从句中可做主语，宾语或表语.做介词宾语时,介词不可提到 that 之前，若提前，介词后需要用 which 或 whom The train ran over and killed a boy and his dog that were just crossing the track 火车飞奔过去，碾死了正在穿过轨道的孩子和他的狗As 的用法 as 在从句中既可指人，又可指物，也可指整个句子，指整个句子时可位于句首，句尾，句中。As 引导定语从句时，在从句中常做主语，宾语,表语。The explorer took only such men and things as he really needed into the jungle .这个探险者进入丛林时仅带了一些他确实需要的人和物品Such people as have made great contributions to the world should be greatly respected. 那些对世界做出巨大贡献的人应当受到更大的尊重Let’s meet at the same palace as we did yesterday咱们在昨天见面的地方见面吧Shakespeare is a famous writer ,as everybody knows 众所周知,莎士比亚是一名著名的作家
