老师们，好!
when reports came into London Zoo that a wild puma had been spotted forty-five miles south of London .这个句子中forty-five miles做状语前面为何没介词呢？譬如at forty-five miles south……
望解惑，谢谢啦！
你理解错误。forty-five miles south of London 是一个副词短语做状语，中心词是副词south，forty-five miles 修饰south。所以这里不需要介词。
