大一学生：freshman

大二学生：sophomore

大三学生：junior

大四学生：senior

一般不说：grade one, two...

my freshman year；my first year in college/in the university 大学一年级

my sophomore year；my second year in college/in the university大学二年级

my junior year；my third year in college/in the university大学三年级

my senior year；my fourth year in college/in the university 大学四年级