I’d like to talk about my internship experience.
I was a summer intern in a big computer science company in Beijing last year.
I had a mixed feeling on my first day there. I mean, I was super thrilled, but part of me was also pretty nervous. I wanted to make a good first impression, but I was not sure whether my character would be accepted there. I smiled to everyone I met, and I just behaved as politely as I could.
Anyway, my duty was to do some entry-level job, like run some errands for others.
And one day, the leader of my group asked me to send a file to my manager, but he gave me the wrong one by mistake. When I arrived at my manager’s office and handed it to him, he was pretty angry. I was really confused at first, and later I realized maybe it was my leader who made a mistake. However, I was just a newbie / rookie, it would be inappropriate for me to talk back to him or argue with him. Plus, no one would believe me.
So the whole time, I had to be polite to my manager, and admit that it was my fault and I promised it wouldn’t happen again.
And one day, the leader of my group asked me to send a file to my manager, however, at that time, I was also holding a file full of waste paper, and when I walked past the trash can, I accidentally threw away the file that was supposed to be given to my manager. And the worst part is, I didn’t realize that until I arrived at his office.
I hurried back to the trash can, but it was already empty. I even asked the cleaning lady whether she had seen any files.
This experience has taught me a big lesson. I definitely need to be more careful in the future.
entry-level = (of a job) at the lowest level in a company
errands = a job that you do for somebody that involves going somewhere to take a message, to buy something, deliver goods, etc.比如：
He often runs errands for his grandmother.
Her boss sent her on an errand into town.
newbie = a person who is new and has little experience in doing something, especially in using computers
rookie = (especially NAmE) a person who has just started a job or an activity and has very little experience
talk back to somebody = to answer somebody rudely, especially somebody in authority
the whole time = during the whole of a particular period of time比如：
The letter was in my pocket all the time (= while I was looking for it).
waste paper = paper that is not wanted and is thrown away
lesson = an experience, especially an unpleasant one, that somebody can learn from so that it does not happen again in the future比如：
The accident taught me a lesson I'll never forget.
We are still absorbing the harsh lessons of this disaster.
Let that be a lesson to you (= so that you do not make the same mistake again).