在这句话中at the school是不是应该放在句尾?This is the distinction that I learned first from at the school Professor Robert Kaganwho talks about this.（我第一次听到这个概念是在上学时罗伯特•卡根教授提出的
在这句话中at the school是不是应该放在句尾?This is the distinction that I learned first from at the school Professor Robert Kaganwho talks about this.（我第一次听到这个概念是在上学时罗伯特•卡根教授提出的
在这句话中at the school是不是应该放在句尾?
This is the distinction that I learned first from at the school Professor Robert Kagan
who talks about this.（我第一次听到这个概念是在上学时罗伯特•卡根教授提出的）
在这句话中at the school是不是应该放在句尾?This is the distinction that I learned first from at the school Professor Robert Kaganwho talks about this.（我第一次听到这个概念是在上学时罗伯特•卡根教授提出的
此处的 at the school 是插入性状语,口语中常可以见到,书面语中一般在它的前后各加一个逗号,把它与其他成分隔开,这样就好理解了：
This is the distinction that I learned first from,at the school,Professor Robert Kagan
who talks about this.
事实上,英语中的状语位置是随意的,可出现在句首、句尾或句中,这要看说话人持什么样的强调态度.比如本句的 at the school 还可以有其他不同的位置：
* At the school,this is the distinction that I learned first from Professor Robert Kagan
who talks about this.
* This is the distinction that I learned first from Professor Robert Kagan at the school
who talks about this.
* This is the distinction that I learned first from Professor Robert Kaganwho talks about this at the school.
.
没错... at the school 改放在句尾.