求翻译：四是形式灵活，突出趣味性。教师在布置作业时，应考虑到小学生特殊的心理特点，做到作业的趣味性与形式的多样性、灵活性相统一。如通过让学生扮演“大夫”“药剂师”“病人”的不同角色，来完成修改病句的练习，学生兴趣盎然，效果颇佳。是什么意思？

Fourth, the form of flexible, highlighting interesting. Teachers in assignments, special consideration should be given to the psychological characteristics of students, so the job fun and diversity, flexibility, unity. Such as by allowing students to play "doctor" "Pharmacist," "patient" of the diff

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正在翻译，请等待...

Four are flexible, highlighting interesting. Teachers at the time of assignments, consideration should be given to the pupils of special psychological features, do the job of interesting forms of diversity, flexibility, and unity. Such as by letting students play "doctor" "pharmacist" and "patient"