[解析]
We sat down next to each other,but David wouldn't look at me.I said gently and quietly, "No one can change your mind,except yourself.If you desire to challenge yourself,there is nothing to do with others' thoughts." He sat still with a deep breath. "You have a full preparation before this event,which is the most important reason why you show up here",【高分句型一】I added with a sincere tone.Hearing my words,David turned to me tremblingly with tears spilling out of his eyes and expressed he had made a firm determination to finish the cross﹣country run.His coach heard what David said and gave me a look—the kind that was more determined than anyone else's.(作者鼓励大卫继续完成比赛,大卫经过强烈的心理斗争,最终决定参加比赛)
I watched as David moved up to the starting line with the other runners.The race started.It seemed that the runway was extremely long for young children,not to mention a child with a heart disease.David insisted on running as if he had forgotten all his weaknesses,though he was tripped over within the a few kilometers.It didn't take long before he picked himself up again and continued his mission.Classmates all appeared on the racing track,cheering for him. "Come on!You can make it!We are proud of you!" they shouted enthusiastically.To everyone's joy,he reached the final line and ranked the 20th.It was no more important whether he won the first place or not【高分句型二】.It was his brave heart and strong faith that could make something unusual happen finally.(大卫开始参赛,虽然中途遇到困难,仍然坚持到最后,完成比赛)