班长用英语怎么说

班长用英语被称为 class monitor.
来源：这个词是从英文单词 class 和 monitor 构成的。class 指的是班级，monitor 指的是监督、管理者。因此班长就是班级中负责监督、管理的人。
例句：
The class monitor is responsible for keeping the classroom clean and organized.
The class monitor will collect and turn in all the homework for the class.
I want to be the class monitor because I want to help my classmates and make sure everything runs smoothly in the classroom.