本文是一篇记叙文。“我”和邻居Orlando总是互相帮助，这次下雪，“我”帮助他铲除了道路上的积雪，让他能很快去上班。一个等待急救的男孩在他的及时救治下摆脱了危险。“我”的善举救了孩子一命。

【熟词生义】　shift 常用义：v. 转移

例句：The action of the novel shifts from Paris to London.

小说情节从巴黎移到了伦敦。

本句义：n.轮班

例句：His father worked shifts in a steel mill.

他的父亲在一家钢铁厂轮班工作。

【难句分析】　A few years back we started this sort of “favor war”， where one of us would do something for the other, such as shoveling (铲) his driveway or helping him build a shed, and next time the other would try to top it with another favor.

分析：该句为主从复合句。句中“where one of us would do something for the other... with another favor”为where引导的定语从句，先行词为“favor war”， where在从句中作地点状语。