很好，不错的归纳

形容词的倍数表达法
(1) as +形容词原级+ as
This room is three times as large as that one. 这个房间是那个房间的三倍大。
The old man is twice as old as I am. 这个老人的年龄是我的两倍大。

(2)倍数+ more than
this room is three times larger than that one. 这个房间比那个房间大两倍。
The old man is two times older than I am. 这个老人的年龄比我大一倍。

(3)倍数+ that/those of
His weight is three times that of mine.他的体重是我的体重的三倍。
实际上，that of 相当于as much as
即His weight is three times as much as mine.

(4)倍数+ n. + of 其中n.表示“比较的方面”，例如：weight, size, age等
this room is three times the size of that one. 这个房间是那个房间的三倍大。