一天我正在屋里看一本有趣的书，这时爸爸进来要我给他买一瓶啤酒。我下楼骑上自行车就去了。我到了商店门口的时候，没锁自行车就进去了。
几分钟后，我从商店里出来，突然看见一个人骑在我的自行车上，要逃跑。我赶紧跑着追他。可他骑得太快，我追不上他。
就在那时，一辆警车正好经过。我跑去请求他们帮助。自行车永远也没有汽车跑得快，很快小偷就被抓住了，我的自行车也失而复得。
One day， while I was reading an interesting book， my father came in and asked me to buy a bottle of beer for him。 I went downstairs and rode on my bike。 When I reached the shop， I entered without locking my bike。
A few minutes later， I came out of the shop。 Suddenly I saw a man riding on my bike and trying to get away with it。 I quickly ran to him。
But he was too fast。 I couldn"t catch up with him。 Just then， a police car happened to come along。
I went over and asked them for help。 They hurriedly drove after the thief。 A bike can never run faster than a car。
So the thief is caught in no time。 I got my bike back again。