Unit 4How I Have Changed I have changed a lot since I was in this school three years ago. I still remember that in my first year,I was too weak to do much exercise and I was not good at English.But with the help of the teachers and classmates,I do exercise whenever I am free, What’s more,I try my best to read and write English as much as possible.And now I can run much faster and I can also get better English grades. Thanks to the middle school life,I have changed so much.Thanks to the teachers and classmates,I have learnt a lot. Never will I forget the valuable middle school life.