粗心 Carelessness

This morning I made a mistake on the way to school. Maybe I was still a little sleepy when I was waiting for the bus to school. I was so careless that I went on the wrong bus. And I didn’t find it. Ten minutes later, I looked outside the window, and then I found the road was not the one I usually went to. Then I found that I was on the wrong bus. I changed right away. But I was late for school at last. 

今天早上在去学校的路上我犯了一个错误。也许是因为我在等公交车去学校的时候还有点困。我太粗心了，所以就上错车了。而我却没有发觉。十分钟后，我看了看窗外，发现路跟我平时走的路不一样。然后我发现我上错车了。我马上转车。但，最后还是迟到了。