As we have known from the map of the world，this is ________.A．twice as large an

题型：不详难度：来源：

As we have known from the map of the world，this is ________.

A．twice as large an island as that	B．twice as larger as that island
C．as twice large as that one	D．twice as a large island as that

答案

A

解析

试题分析：考查倍数表达. 正确结构应该是：倍数 +as adj+a/an+n as ；第一个as是副词，所修饰的形容词要紧跟在它后面，形容词所修饰的名词要跟在形容词的后面。所以应该使用：as large an island as。句意：正如我们从地图上所看见的一样，这是一个比那个岛大两倍的岛屿。选A。
点评：倍数表达要牢记，倍数表达法是高中英语教学的重点，也是历届高考的热点。当我们要表达甲是乙的几倍时，通常用句型来表示： “A+倍数+形容词或副词的比较级+than+B”，表示“A比B大（长、高、宽等）多少倍”。2.“A+倍数+as+形容词或副词的原级+as+B”，表示“A正好是B的多少倍”。 3. “A+倍数+the size /height /length /width，+of+B”，表示“A正好是B的多少倍”。4.“……times+what+从句”。