用英語(yǔ)表達(dá)"A 是 B 的 N 倍長(zhǎng)（寬，高，大，重等）"，"A 比 B 長(zhǎng)（寬，高，大，重等）N 倍" 或"A 的長(zhǎng)度（寬度，高度，大小，重量等）是 B 的 N 倍"，可用下列幾種句型：

　　1."A + be + 倍數(shù) + as + 計(jì)量形容詞原級(jí) + as + B".

　　This tree is three times as tall as that one. 這棵樹(shù)是那棵樹(shù)的三倍高。

　　His father is twice as old as he. 他父親的年紀(jì)有他兩倍大。

　　2."A + be + 倍數(shù) + 計(jì)量形容詞比較級(jí) + than + B "

　　The Yangtze River is almost twice longer than the Pearl River.

　　長(zhǎng)江差不多比珠江長(zhǎng)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(shù) + the + 計(jì)量名詞 + of + B "

　　The newly broadened square id four times the size of the previous one.

　　新擴(kuò)建的廣場(chǎng)是未擴(kuò)建時(shí)的四倍大。

　　4."The + 計(jì)量名詞 + of + A + be + 倍數(shù) + that + of + B "

　　The size of the newly broadened square is four times that of the previous one.

　　新擴(kuò)建的廣場(chǎng)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倍于往常的價(jià)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(lái)，電視機(jī)的價(jià)格下降了兩倍。