Mr.Joe,_____ professor at the University of Fribourg,is famous for his academic achievements.

题目

Mr.Joe,_____ professor at the University of Fribourg,is famous for his academic achievements.
A.不填 B.a
翻译成“***大学的一个教授”
但是我觉得,“professor at the Universit of Fribourg”是作Mr.Joe的同位语,当称谓、头衔作同位语时,要使用零冠词的.

答案

在这里并不是指头衔,而是指一个人,Mr.Joe 和Professor构成同位语的关系,周先生是该大学的一个教授
头衔的时候如：He was appointed professor of the university,这时不用冠词