特殊动词hope、want的过去完成时的含义

特殊的一些动词如hope、want、mean、plan、expect、think、intend、suppose等，这些词单存地用于过去完成时表示“过去未曾实现的愿望”，意思是：“本打算（希望）.......”
They had hoped to come to see you last Friday.
We had wanted to earn a lot of money.
They had intended to go to Washington that summer.
They had wanted to help but couldn't get there in time.