tiáokè tōngzhī lǐ chángjiàn sān jiàn shì: xīn shíjiān, xīn jiàoshì, bǔkè yuányīn

调课通知里常见三件事：新时间、新教室、补课原因。

A class rescheduling notice typically includes three things: the new time, the new classroom, and the reason for the makeup class.