cost 費用 可數嗎

　　How much does it cost to become a member?

　　要成為會員得花多少錢？

　　It's time we got on to the question of costs.

　　我們該討論成本問題了。

　　That one mistake has cost him dear over the years.

　　那一個差錯使他多年來付出了沉重的代價。

　　Cost was a key element in our decision.

　　價錢是我們決策時考慮的主要因素。

　　The cost should average out at about  6 per person.

　　費用應該是平均每人約6英鎊。