cost的过去式 就是它本身。
cost:n.费用;花费;价钱;成本;v.需付费;价钱为;
第三人称单数: costs复数: costs现在分词: costing过去式: cost过去分词: cost
How much will it cost, more or less?
这个大概得花多少钱?
The total cost to you is 3 000.
你总共要支付3000英镑。
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。