案情简介2011年5月22日14时许,付小杰、刘小畅、申小伟、申小浩四人相约前往雁栖学校附近的京密引水渠游泳。途中,四人遇到孙小利,向其表明意图后,孙小利表示愿一同前往。五人到了引水渠岸边后,付小杰与孙小利首先试水。试水时,孙小利失足落入水中;付小杰见状试图拉拽孙小利的手臂,但未成功,孙小利被水冲走。四人沿岸追赶孙小利,但未追上。途中,一成年路人询问付小杰等人是否有人落水,但付小杰等人否认,而 Brief introduction of the case May 22, 2011 14 am, Fu Xiaojie, Liu Xiaochang, Shen Xiaowei, Shen Xiaohao four people meet to Yanqi schools near Jingmi diversion swim. On the way, four met Sun Xiaoli, to show their intentions, Sun Xiaoli expressed willingness to go with them. Five people to the water channel bank, Fu Xiaojie and Sun Xiaoli first test the water. When testing the water, Sun Xiaoli stumble into the water; Fu Xiaogu saw trying to pull Sun Xiaoli’s arm, but unsuccessful, Sun Xiaoli was washed away. Four people chasing Sun Xiaoli along the coast, but did not catch up. On the way, an adult passer-by asked Fu Xiaojie et al. Whether anyone was overwhelmed, but Fu Xiaojie et al denied that