主语+谓语+倍数+the size/amount/length/width/depth/weight等抽象名词+of…：The earth is 49 times the size of the moon. 其他几种常见的倍数表达法有：主语+谓语+倍数+as+adj/adv+as；主语+谓语+倍数+adj/adv比较级+than