学校八点上课下午五点放学用英语怎么说

学校八点上课下午五点放学用英语可以说作："School starts at eight in the morning and ends at five in the afternoon."

"Morning"和"afternoon"都是英语中表示时间的常用词汇，"morning"表示早上，"afternoon"表示下午。

例句：

"I have to be at school by 8am every morning."（我每天早上8点钟要到学校。）
"I'll meet you in the library after lunch, around 2pm in the afternoon."（我会在下午2点左右午饭后在图书馆碰面。）