标题: 牛人来看一个经典语法问题 关于twice等数词用法 急 [打印本页] 作者: zlljolie 时间: 2011-7-4 21:29 标题: 牛人来看一个经典语法问题 关于twice等数词用法 急 When drive-ins were at the height of their popularity in the late 1950s, some 4,000 existed in the United States, but today there are less than one-quarter that many 有个选项是. the number is less than one-quarter the amount 想问下牛人，这里的one-quarter到底是什么词性呢？ 单从语法看，只看这个选项这句话the number is less than one-quarter the amount。这种表达语法正确吗？ 以前遇到过twice，有twice+n. , twice+ what从句，这里的twice又是什么词性呢？ 这种问题好纠结啊！作者: colasama 时间: 2011-7-4 22:44
查了下朗文
twice在这里是前置限定词（predeterminer）,就是用在determiner前面的词。
什么是determiner呢？the、that、his之类的就是 all the boys, both his parents中的all 和both就是前置限定词