could you correct my grammar ?

Qualities of a good friend

There are three qualities of a good friend. Firstly, a good friend shoudl be trustworthy. For instance, I told my friend I wanted to chase a girl. After few days, everyone knows that I love that girl, and I felt embrassing. As a good friend, he should have kept my secret. Secondly, a good friend should be able to help you to solve your problems. For example, when I was a high school student, I was excluded by my classmates because I had a selffish personality. I was extremely sad about it. Fortunately, my best friend encouraged me and told me what was my problem, so I followed his advice and changed myself. After that, my classmates forgave me. Finally, a good friend should accept different types people. For example, my friend told me that he has grown up in a rich family and didn't like socialing with poor people. But after his father is bankrupted, he started to treat everyone in a friendly manner. If his father didn’t bankrupted, I think my friend would still discriminate poor people. To sum up, I think a good friend should have the three above qualities.

2009-02-02 20:18:09 補充：
a good friend *should be

2009-02-02 20:18:38 補充：
After few days, everyone knew that I love that girl,

Qualities of a good friend
There are three qualities of a good friend. Firstly, a good friend is trustworthy. For instance, I told my friend I wanted to flirt a girl. After few days, everyone knows I loved the girl, and I was very embarrassed. So in this case, a good friend's job is to keep the secret.
Secondly, a good friend should be able to help you solve your problem. For example, when I was a high school student, I was excluding by my classmates because I had a self- fish personality, so I was extremely sad. Fortunately, my best friend encouraged me and told me why my character had some problem, so I did as he advised. Since, my classmates did forgave me.
Finally, a good friend should accept different types of people. For example, my friend told me when he was growing up in rich family. He didn’t want to have any sociality with poor people. But after his father became bankruptcy, he was very friendly with different people. Nowadays, if his father didn’t become a bankrupt, I thought my friend still discriminate poor people. As a conclusion, there are three qualities to know whether your friend is a good friend or not.

Qualities of a good friend

There are three qualities for being a good friend. Firstly, a good friend should be trustworthy. For instance, I told my friend I wanted to go after the girl. After a few days, everyone knows I loved the girl, and I was very embarrassed. So in this case, my friend should have kept the secret. Secondly, a good friend should be able to help you to solve your problems. For example, when I was a high school student, I was excluded by my classmates because I had a selfish personality, so I was extremely sad. Fortunately, my best friend encouraged me and told me why my character had some problem, so I followed his advice. After that, my classmates forgave me. Finally, a good friend should accept different types of people. For example, my friend told me when he was growing up in a rich family. He didn’t want to have any sociality with poor people. But after his father got bankrupt, he was very friendly with different people. Nowadays, if his father didn’t get bankrupt, I thought my friend will still discriminate poor people. To sum up, there are three qualities to know your friend is a good friend or not.