(1)倍数＋比较级＋than．．．，

例：The room is twice larger than that one．这个房间是那个房间的两倍大。

         There is 30 times greater chance of being hit by lightening than being attacked by a shark.

(2)倍数＋as＋原级＋as．．．，

例：The room is three times as large as that one．这个房间是那个房间的三倍。

(3)倍数＋the size ／height／length ／weight ／width of．．．

例：The room is three times the size of that one．这个房间是那个房间的3倍大。