In midst of which flowed a great river

1.a very agreeable situation located within two small hilss in the midst of which flowed a great river.
还原应该是, a great river in the midst of two small hills.

2. They support the cables from which the bridge has been suspended.
还原应该是, the bridge has been suspended from the cables

第一句中, in the midst of which flowed a great river 中, flowed a great river 采用倒装.
第二句仲, the bridge has been suspended, 为何没有倒装?

这是一个定语从句的完全倒装句，原句为 a great river flowed in the midst of which(which就是代替two hills)。in the midst of which 是定语从句的语法要求，至于flowed的倒装与否，要看句意的需要，也可以不倒装。flow是不及物动词，千万不要以为是此句的意思是flow与a great river 是动宾关系。

首先纠正你几个错误： ①“flow 是不及物动词来的, 所以不会是过去分词做状语”,谁说过去分词做状语必须是及物动词？ gone from home so long, they joyously embraced their mates of boyhood.---《薄冰英语语法》p349，其中go是vi ②in the midst of which a great river flowed × ===================================================================== 下面逐步分析这个句子,其实这个句子比较复杂。 ①这个句子可以写成 1.a very agreeable situation which is located within two small hills. 2.a great river flowed in the midst of the hill. ②现在使用过去分词做定语，句1变成a very agreeable situation located within two small hills ③接着要让句2变成句1的定语，使用which用作关联词，指代two small hills，因为介词根据句型结构的进行了前置，该句子必须采用倒装，（地点状语位于句首，主语为名词而谓语为不及物动词的陈述句必须倒装----《薄冰英语语法》p592，eg：from the windows came sound of music.) ================================================================ 现在就好理解了，既然是倒装，谓语flowed就必须位于主语a great river之前。 =============================================================== 需要注意的是，in the midst of which 虽然说引导的是一个定语从句，但在自身从句中却是做地点状语，这也正是该句子复杂所在，也是flowed必须位于a great river的原因。 ================================================================== 说得这么详细了，花了我一个下午的时间，还帮你详细查阅了，《薄冰英语语法》楼主一点要加分啊！