定语从句,先行词前的介词或介词短语一些疑问...

题目

定语从句,先行词前的介词或介词短语一些疑问...
比如说 There is the house where I used to live.
可变成 There is the house in which I used to live.或
There is the house which I used to live in.
定语从句中的介词提前了.
那这个句子(看后半部分,within开始):He described it as a very agreeable situation located within two small hills in the midst of which flowed a great river.
定语从句是in the midst of 还是这个介词短语修饰了先行词?
那这个句子是不是对的?I have a table in the middle of which stands a bottle.

答案

第一个句子分块挺多：1、主句是He described it as a very agreeable situation.located within ...是过去分词作situation的后置定语2、定语从句部分指...two small hills 【in the midst of which】 flowed a great...