和同学发生矛盾用英文怎么说

"to have a confpct with a classmate" 或 "to have a dispute with a classmate" 可以用来表示和同学发生矛盾。

来源：
"confpct" 和 "dispute" 都有"争端"或"矛盾"的意思。"confpct" 是指两个或更多的人或团体之间相互对立或相互冲突的关系，而 "dispute" 是指两个或更多的人或团体之间关于某事物的意见不同而产生的争论或争执。

例句：

"I had a confpct with my classmate over the group project." (我和我的同学在小组项目上发生了矛盾。)
"I had a dispute with my classmate about the way we should present our project." (我和我的同学就我们应该如何展示项目发生了争执。)