表示“相差……;增加了……;增加到……”句型：
(1)She is taller than I by three inches. 她比我高三英寸
(2)There is one year between us. 我們之間相差一歲。
(3)She is three years old than I 她比我大三歲。
(4)They have increased the price by 50%. 他們把價格上漲了50%
