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
