This tree is three times as tall as that one.這棵樹是那棵樹的三倍高.
His father is twice as old as he.他父親的年紀有他兩倍大.
2.“A + be + 倍數 + 計量形容詞比較級 + than + B ”
The Yangtze River is almost twice longer than the Pearl River.
長江差不多比珠江長兩倍.
The dictionary is exactly five times more expensive than that one.
這本字典比那本恰好貴5倍.
3.“A + be + 倍數 + the + 計量名詞 + of + B ”
The newly broadened square id four times the size of the previous one.
新擴建的廣場是未擴建時的四倍大.
4.“The + 計量名詞 + of + A + be + 倍數 + that + of + B ”
The size of the newly broadened square is four times that of the previous one.
新擴建的廣場為以前的四倍大.
5.其它
I'm twice/ double his age.我的年齡是他的兩倍.
I've paid five times the usual price for the stamp.
我出了5倍於往常的價格買這枚郵票.
The average income of the staff has been increased by 50 percent compared with last year.與去年相比,該單位職工的收入增加了50%.
The price of TVs are twofold（adj.兩部分的,雙重的）down over these years.
近幾年來,電視機的價格下降了兩倍.