写出十个英语过去完成时句子，并标出其中的谓语
They had already had breakfast before they arrived at the hotel.2.She had finished writing the composition by 10 ：this 00 morning.3.He told me that there had been an argument between them 4.until last semester,we had learned the past tense,the past perfect tense and the future tense and so on.5.They said that production costs had been reduced.6.All the tickets had been sold out when they arrived.7.We had hardly reached the school before it began to rain.8.By the time I got to the bus stop ,the bus had already left .9.Eric died a few days ago and these years,he had lived as a recluse.10.He died,though great efforts had been made to save his life.11.We had learned over two thousand English words by the end of last term.12.They had planted six hundred trees before last Wednesday.13.Before she came to China,Grace had taught English in a middle school for about five years.14.I had learned 1000 English words till then.15 .They had arrived at the station by ten yesterday.
过去完成时，就是had加过去分词，或者加been加表语（被动语态）
可是我英语吧差得个没学过似的，等不清楚😂
分不清楚
