The Summer Palace is wonderful .Have you ever visited any other interesting placeshave been had been为什么

问题描述:

The Summer Palace is wonderful .Have you ever visited any other interesting places
have been had been
为什么

have been 现在完成时,这里是说:你曾经去过吗?had been 是过去完成时.had been是过去完成时结构:had+动词过去分词:表示两个事件中一个发生在前,或者说是表示较早的过去.After they had entered the house,they w...