The Summer Palace is wonderful .Have you ever visited any other interesting places
have beenhad been
为什么
人气:114 ℃ 时间:2020-04-02 16:23:22
解答
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...
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