关于人际关系和如何交友的文章一般有记叙和议论两种体裁，每种体裁都有不同的写作特点：
记叙文：什么时间、什么地点、如何结识朋友的；你对朋友的第一印象；你朋友的性格；你与朋友之间的交往，有什么共同的爱好等等。语言生动、真实、贴切为准则。
议论文：对于如何处理人际关系和友谊，表述观点，可从正反两个方面阐述，最后要表达自己的想法。如果为了让读者对你的观点更加信服，可适当列举一些典型的事例。
1．I'm writing to give you some tips about how to maintain your friendship with your old friends.
2．I'm writing to apologize to you for not keeping my promise.
3．I suggest that you should join a club so that you can get in touch with those who share the same interest with you.
4．If I were you, I would spend more time communicating with people around me.
5．Just as a famous saying goes, a friend in need is a friend indeed.
6．I'm sorry to have broken my promise, but I didn't mean to.
7．I was just leaving home when it suddenly rained heavily.
8．I was so busy with my homework that I thought about nothing else.
9．You can share your happiness and sorrow with your old friends so that you won't feel stressful in life.
10．I hope that we will remain good friends no matter what happens in the future.
