过去完成的英文
past perfect
例句与用法
更多例句： 下一页- For three weeks , for a long time
可用于现在过去完成时或过去时的句子里 - They said that production costs had been reduced
（过去完成时）他们说生产成本已经下降了。 - He told me that there had been an argument between them
（过去完成时）他告诉我他们之间有过一场辩论。 - Past perfect continuous tense
过去完成进行时 - Past and past participles
过去或过去完成式
