英语是:Learn some extracurricular knowledge.解释:learn 英[lɜ:n] 美[lɜ:rn] vt. 得知; 学习,学会; 习得; 记住; vt. 学习; 得知; 记住; 认识到; vi. 学习; 获知; [例句]Their children were going to learn English他们的小孩会学英语。extracurricular 英[ˌekstrəkə'rɪkjʊlə] 美[ˌekstrəkə'rɪkjələ] adj. 课外; 学校课程以外的; [例句]Each child had participated in extracurricular activities at school.每个孩子都参加了学校的课外活动。knowledge 英[ˈnɒlɪdʒ] 美[ˈnɑ:lɪdʒ] n. 了解,理解; 知识(表示多方面的知识时有复数knowledges这一用法); 学科; 见闻; [例句]She told Parliament she had no knowledge of the affair.她告诉议会她对此事并不知情。