Describe a friend who you had at school.
You should say:
what he/she looked like
where you first met
how you became friends
what you do/did together
and explain why you remember him/her so well.
Let me tell you about my best friend in my university. His name is Jim. He is not very tall, but he is very strong and has a lightly tanned skin because he really enjoyed outdoor activities. We firstly met when I went to the university as a freshman.
We became friends when he taught me how to swim in the sea. Actually my university was near the sea, and he was very kind-hearted and he taught me how to swim in the sea. At first, I just swam like a brick, but he showed me patiently how to kick my legs and put my face in the water. Then he taught me how to control my breathing. Gradually I got the hang of it and felt comfortable with the water. Eventually I could control my breathing perfectly and do the swimming strokes pretty well.
After we became good friends, we always got to the library to study together, or played football during our time off. However after graduation, we went to the different cities to live, and sometimes I missed him because he was a very helpful and magnanimous friend.