上课情况用英文怎么说写

"In class" 或 "During class" 是用来描述上课时的情况的常用短语。

来源：这两个短语都是由动词 "in" 或 "during" 与名词 "class" 组合而成的。

例句：

The students were quiet in class today. (今天学生们上课很安静。)
During class, the teacher explained the new material. (上课时，老师讲解了新材料。)