First time playing badminton in Concord

Last Wednesday, I think, I met some students from China, my country. Of course, I felt very happy. During lunch, they told me they often play badminton in the sports hall after class. I like playing badminton,but I hadn't been to the sports hall yet. So, I went with them.
You can guess what happened next, we played badminton then. I must say, that was really interesting. I used to think I played badminton very well, but my new friends played far better than me. I had to practise more.
We played and played, that was fun, you know. We played until 9 p.m. I think I played a little more because I felt very tired next day morning, and my arm had something wrong. My new friends joked about my arm over breakfast.
During morning break, I think, the sports teacher asked us if we would like to take part in the badminton competition. We said 'yes', and I entered for the singles. But, I felt a little nervous.