1.小学生:pupil复数:pupils形容词:pupillary例句:The teacher teaches her pupils math. 这个老师在教小学生数学。2.中学生:middle school student复数:middle school students例句:Are you middle school student? 你是中学生吗?3.大学生:undergraduate/academician复数:undergraduates/academicians例句:The undergraduate/academician has spent four years at university.这名大学生已经度过了四年的本科生活。