有个句子原句是：
This place must have been prosperous when people were still living here.
能如此说吗？
This place must have been prosperous when people had lived here.
请问：had lived here 是曾在这里住过还是已经住在这里？
有个句子原句是：
This place must have been prosperous when people were still living here.
能如此说吗？
This place must have been prosperous when people had lived here.
请问：had lived here 是曾在这里住过还是已经住在这里？
live为静态动词，假如用于完成时态，一般要与时间段一块连用表示动作/状况持续某一时间点的时间总长度，或者说是一种没有完成，没有结束,仍然在持续的动作行为或者状况。
He had lived here for three years before I came here.
She has lived in China for eight years.
Tom has lived in Beijing since 2010
Mary has lived in China since three years ago.
Jack has lived here since he came here .
