句子写得不错,就是有很多拼写错误,另外句首都要大写的.我帮您修改了一下,请对照原文,希望对您有所帮助：
AN UNFORGETTABLE THING
Everyone has his unforgettable thing.Friendship may be the most impotant thing in our life.
It's like a light that gives us brightness.I have many things that I can't forget with my friends.
One day,I showed a new watch to my best friend.The watch is very pretty and I like it very much.When I passed it to her,she dropped it and the watch crashed into pieces.I shouted to her:I don't want to see you again.She cried at once after school.I found a pretty pencil case in my desk.In the pencil case,I found a note which said:"Dear Cristine,I gave this to you because I don't want to lose you.Can you forgive me?" I was moved by the note and I felt regret with my words.I said sorry to her and we were closer than before.A friend is like a star in the sky.He (She) is always there around you.I can't forget this thing forever.