英语句子中的问题

Plutarchs Lives there was, in which I read abundantly, and I still think that time spent to great advantage.

老师这句话中的Plutarchs Lives there was不应该用完全倒装吗？in which Iread abundantly为何用inwhich？togreatadvantage是什么使用方法？

Plutarchs Lives 这是书名。所有格指该作者写的，是传记集：波卢塔克的《生活》。

把存在句的真的主语提到句首，应该是强调使用方法，为了显眼。

think that time spent to great advantage，是 think 后接复合宾语结构。that time 是think 的宾语，spent 是过去分词作time 的定语，to great advantage 是宾补。

I still think that time spent to great advantage. 意为：我目前仍然觉得，所花的那些时间对我非常有好处。