cost

　　The ticket cost me ten dollars.此句中cost用作及物动词,意为“花费”,这是cost的常用法之一。

　　The cost of living is much higher now than it was two years ago. 此句中cost用作名词,意为“价格,成本,费用”,这是它的常用法之二。

　　cost除了以上用法外,还有其它用法。如:

　　① Has this project been costed? (cost用作及物动词,意为“估价,估计成本”。)

　　② I must get the book at all costs. (at all costs意为“无论如何,不惜任何代价”。)

　　③ She saved him from drowning, but at the cost of her own life. (at the cost of sth.意为“以牺牲某事物为代价”。)