homework, guiding learning methods, encouraging students to query and find problems。 After- school classes give guidance and help for the students。 There are two forms of after-school, inpidual tutoring and group tutoring ( Shen 1991)。Combined with the views of several educators, the broad range of traditional after-school classes, including school activities organized by the school, as well as the activities outside the school。文献综述

With the change of the times and the development of economy, people's demand for knowledge is increasing。 The traditional school education cannot meet the needs of students。 In today's era, after-school class t is not only refers to the traditional school extra-curricular guidance。 At this stage, the school teachers are still one of the main body of after-school class。 However, it has been unable to meet the needs of students, students seeking tutoring out of school。 In the modern sense, compared with the traditional extracurricular tutoring, it has shown a trend of persification, and its meaning is much broader。 First, the implementation of the space transfer from the school to the outside。 Secondly, the implementation of the main body from the school teacher turned to outside school teachers。 Moreover, modern tutoring is a kind of paid service, not an obligation。 Modern after-school class has become one of the important

means to meet their own needs on curriculum （Zhang 2007)。