同学的英语是classmate

读音：英 [ˈklɑ:smeɪt]  美 [ˈklæsmeɪt]

例句：

1.我要去看望我的一位老同学。I'm going to call on one of my former classmates.

2.她觉得自己就像一个告发了同班同学的五年级学生。She felt like a fifth-grader who had snitched on a classmate.