求问university 和umbrella为什么一个前面是a,一个是an?

求问university 和umbrella为什么一个前面是a,一个是an? 弱弱的问一下,the university of manchester 和university of manchester有什么区别? at university和in the university 翻译SOOCHOW University和CENTRAL SOUTD University college和university区别 My university 求英语作文 Beijing normal university我想问一下normal University university University 和 College 的区别 university和college的区别? college和university的区别? college和university的区别? sheffield university 和sheffield hallam university哪个好? University of Michigan和Michigan State University是什么关系? Oxford University 和 University of Oxford 的区别? “American” 和 “university”这两个名词前加 a 还是 an ,说明理由.急求答案 Binghamton University, State University of New York & university of california Riverside 纠结中.求建议!