这句话中double后面为什么可以直接跟名词?I'm twice/ double his age
问题描述：
这句话中double后面为什么可以直接跟名词?I'm twice/ double his age
还一种形式也可以吧?I am twice as old as he is
答
倍数表达法：
A + 谓语+倍数+the +n.(size/ height/ length……)+of B
A + 谓语+倍数+as + abj. + as B
A + 谓语+倍数+adj. 比较级+than B
A + 谓语+adj. 比较级+than B+by+倍数