cost的现在分词： costing；过去式： cost；过去分词： cost

cost

n.费用;花费;价钱;成本;(为做某事涉及的)努力，代价，损失

v.需付费;价钱为;使丧失;使损失;使付出努力;使做不愉快的事

例句：

How much does it cost to become a member?

要成为会员得花多少钱？

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

我们该讨论成本问题了。

That one mistake has cost him dear over the years.

那一个差错使他多年来付出了沉重的代价。

Cost was a key element in our decision.

价钱是我们决策时考虑的主要因素。