在自主学习过程中,从任务的选择人来划分,可以分为老师布置型任务和学生自选型任务。从学习效果来看,可以分为有效型学习任务和无效型学习任务。老师只有充分了解各种任务的特征和作用,才能够更好地布置和选择任务,达到提高学生英语水平的目的。 In the process of autonomous learning, from the task of selecting people to divide, can be divided into teacher-arranged tasks and students’ self-selection tasks. From the learning point of view, can be divided into effective learning tasks and invalid learning tasks. Only by fully understanding the characteristics and roles of various tasks can teachers better arrange and select their tasks so as to achieve the goal of improving students’ English proficiency.