As we had had a long walk through one of the markets of old Delhi.第二个had是什么意思,什么用法

问题描述:

As we had had a long walk through one of the markets of old Delhi.第二个had是什么意思,什么用法
是一个词组吗

第二个had是实义动词have的过去分词have a long walk走了很远的路.第一个had是过去完成时中的助动词,