I was nervous of exams all the time before. I是 我be nervous of 是对...感到紧张的(由于担心)/感到焦虑的exams是考试exam的复数形式all the time 是总是,用来代替时刻,因为老外不会这么讲before是以前 如满意,请采纳! be nervous about 是表示敏感性的紧张例如:And it's about my third or fourth week of graduate school and I'm pretty nervous about this.那时,研究生学习才开始三到四周,我很紧张。be nervous of 是带有恐慌感的紧张例如:I'm extremely nervous of missing the train.我非常担心我会赶不上火车。