参加志愿者活动过程中，我发现志愿者参与活动的动机和持续时间具有相关性。

Participate in volunteer activities in the process, I found the motivation and duration of the volunteers involved in activities relevant. 10th grade, has organized seven students set up a project group of 186 high school students to do a survey and interviews, he concluded beneficial motivation, self-serving motivation and mixed motives, three motives opposition and interchangeable. On this basis, I finished the 11th grade papers, and published in the "Youth and Society", learned to use the basic method of writing research papers and linear regression analysis method.

During the volunteer activities, I found that the motivation and duration of volunteer participation were relevant. In the 10th grade, 7 students were organized to set up a project group, and 186 middle school students were surveyed and interviewed, concluding that he was advantageous to his motivation, self-interest and mixed motivation. On this basis, in the 11th grade I completed the thesis, and published in Youth and Society, learned the basic methods of writing the research papers and the application of linear regression analysis.

In the process of participating in volunteer activities, I found that the motivation and duration of volunteer participation were related. In the 10th grade, seven students were organized to set up a project team, and 186 middle school students were interviewed and interviewed. The conclusion is that the three motivations are advantageous to others, self-interest and mixed motivation, which are opposite and mutual conversion. On this basis, I finished my thesis in Grade 11 and published it in youth and society. I learned the basic methods of writing research papers and the application of linear regression analysis.<br>