上课铃声响了用英语怎么说

"The school bell has rung" 或者 "The bell for class has rung" 是表示上课铃声响了的英文表达。

"School bell" 是指学校里的铃声，用来宣布上课或者下课的时间。这个说法可以追溯到19世纪，当时学校采用铃声来定时上课。

例句:

"The school bell just rang, we have to go to class now." (铃声刚刚响了，我们现在必须去上课。)
"I was so focused on my work that I didn't even hear the school bell ring." (我太专注我的工作了，以至于我都没有听到上课铃声响。)
"The sound of the school bell brought back memories of my childhood." (上课铃声的声音唤起了我童年的回忆。)