Miss Green didn't tell us ____ before she came to our school.where she livedwhere she had lived答案是后一个,我要一个说得过去的理由,不是翻译

Miss Green didn't tell us ____ before she came to our school.where she livedwhere she had lived答案是后一个,我要一个说得过去的理由,不是翻译
Miss Green didn't tell us ____ before she came to our school.
where she lived
where she had lived
答案是后一个,我要一个说得过去的理由,不是翻译

Miss Green didn't tell us ____ before she came to our school.where she livedwhere she had lived答案是后一个,我要一个说得过去的理由,不是翻译
第一个回答很对.
再简单一点就是LIVE这个动作在CAME之前,CAME已经是过去式了,所以LIVE就是"过去的过去"啦,所以要用过去完成时.
再没有为什么了,过去的过去就得用过去完成时.

这个是从句的形式，从句的时态要比主句往过去一级，主句用的是过去时，所以从句就变成过去完成时