同学用英语怎么写翻译

　　I'm going to see an old schoolmate of mine.

　　我去见一个老校友。

　　My father still keeps in touch with his old schoolmate.

　　我父亲仍和他的'老同学保持联系。

　　He started the magazine with a schoolmate

　　他和一个同学创办了那份杂志。

　　On my graduate student's time, an schoolmate's paper discussed this topic.

　　我上研究生的时候一个同学论文就是做的这个题目。

　　10 years after graduation, he could hardly recognize his old schoolmate.

　　毕业10年后，他几乎认不出他以前的同学了。