目录
1，“cost”的过去分词和过去式分别是什么？
都是原型，cost ,cost. 读音： 英 [kɒst] 美 [kɔst] 释义： vt. 花费；使付出；使花许多钱 n. 费用，代价，成本；损失 vi. 花费 n. (Cost)人名；(英、罗)科斯特 短语： the cost of 以…为代价 low cost 低成本，廉价的 production cost 生产成本 at the cost of 以…为代价 cost control 成本控制 例句： 1、Did you reckon in the cost of the taxi? 你把坐计程车的费用计算在内了吗? 2、They deducted the cost of the broken window from his allowance. 他们从他的津贴中扣除损坏窗户的费用。 3、We have to weigh the cost of the new system against the benefits it will bring. 我们必须权衡一下起用新系统所需的成本和它将带来的效益。
2，动词的过去式和过去分词
attend...attended ask...asked finish...finished discuss...discussed continue....continued need...needed assist...assisted ride....ridden...rode teach...taught watch...watched sell..sold expect...expected repeat...repeated explain..explained heat...heated force..forced hear...heard.. shout..shouted hold..held
3，cost的过去分词和过去式
都是原型，cost ,cost. 读音： 英 [kɒst] 美 [kɔst] 释义： vt. 花费；使付出；使花许多钱 n. 费用，代价，成本；损失 vi. 花费 n. (Cost)人名；(英、罗)科斯特 短语： the cost of 以…为代价 low cost 低成本，廉价的 production cost 生产成本 at the cost of 以…为代价 cost control 成本控制 例句： 1、Did you reckon in the cost of the taxi? 你把坐计程车的费用计算在内了吗? 2、They deducted the cost of the broken window from his allowance. 他们从他的津贴中扣除损坏窗户的费用。 3、We have to weigh the cost of the new system against the benefits it will bring. 我们必须权衡一下起用新系统所需的成本和它将带来的效益。