task-based 基本例句 adj.基于作业的 Cooperative learning, proposed by some American educators, is a learner-centered, task-based approach which is suitable for foreign language learning and widely employed in many countries. 由美国一些教育家倡导的合作学习是以学生为中心的教学方法，适合外语学习的特点，在世界上许多国家推广。 cnki