2021届人大附中高中英语新高考语法一轮复****讲义(11)than,as和but作关系代词用法知识点总结整理 than, as, but作准关系代词的用法 关系代词通常是用来引导定语从句的,than, as和but除了做基本连词外还可以作准关系代词,但是与which,who,that等关系代词不同,than, as和but引导的定语从句与典型的定语从句不太相像,因此称它们为准关系代词。 Than,as,but作准关系代词条件是:前面必须有先行词(名词) 例: I have more money than you do (我比你有钱) He has as much money as I do (他和我的钱一样多) There is nothing but he knows(没有什么他不知道的) 我们分别进行详细说明: 1. Than 作准关系代词的用法 Than 之前若有名词,则than = than + the + 前面的名词 + 关系代词(who, whom, which),因此可以将than 视为关系代词。Than 作准关系代词通常出现在more …than,less…than, fewer…than等结构中,且在从句中可以充当主语,宾语和be动词后得表语。 例1. I have more money than is needed.(than作从句的主语) = I have more money than the money which is needed (我现有的钱比所需要的多) 例2. I have more money than he needs(than作从句的宾语) I have more money than the money which he needs (我现有的钱比他所需要的多) 例3. heis a better student than you( are ).(than 作从句的表语) 2. As 作准关系代词的用法 as之前若有名词,则as = as + the + 前面的名词 + 关系代词(who, whom, which),因此可以将as 可视为关系代词,并在所引导的从句中作主语,宾语和be动词之后的表语。但只用于下列短语中: as作为准关系代词只能用于下列短语: 1. Such+n. + as... 例: I don't like such a man as tells lies(as作从句的主语) 我不喜欢说谎的人 2. The same+ n. + as... 例: I have the same book as you bought yesterday(as作从句的宾语) 我有一-本书和你昨天买的-样 3. As+ adj. +n. + as... 例1: he is as diligent a man as ever lived(as作从句的主语) 他是有史以来最勤奋的人 例2: he is as good a man as John (as 作从句的表语) 他是个和约翰一样好的人 注意: ① such + n. 之后不可用like(像)加以修饰。 Such a man like him is ba