我是一名中学生：How about I am a middle school student.
我是一名大学生用英文I'm a junior in the university.
我是大三学生I'm a senior in the universityI'm a college student.
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我是个大学生I'm an undergraduate student;m a freshman in the university.
我是大一学生I'm a sophmore in the university.
我是个大学本科学生I'm a postgraduate student.
