This railway is as three times long as that one.中的three time

題目：

This railway is as three times long as that one.中的three times long做什麼詞性

解答：

as three times long as是作爲副詞修飾railway 再問： 那this railway is three times longer than that one 和 this railway is as three times long as that one的區別在什麼地方
再答： 前者是這條鐵路比那條長三倍，即是那條鐵路的四倍 後者是這條鐵路的長度是那條的三倍。