英语倍数怎么表达全面有讲解O(∩_∩)O谢谢

非常简单.
House A is 120 years old .House B is 40 years old.(用三种方法把它们合并起来 120 / 40)
1 House A is three times as old as House B.---------倍数+as +形容词/副词原级+as - - - -
2 House A is three times the age of House B.---------倍数+the +名词+of - - - - -
3 House A is three times older than House B--------倍数+形容词/ 副词比较级+than - -- - -

常见的3种表达， 以A是B的两倍长为例子：
A is twice longer than B. 倍数+比较级+than
A is twice as long as B. 倍数+as 原形 as
A is twice the length of B. 倍数+ the + n. + of
望能解你之惑