我们通常八点上课 We usually eight class ; We usual eight attend class

明天早上八点上课 At eight tomorrow morning class ; Eight classes tomorrow morning

在八点上课 In the eight classes

我们八点开始上课 We started eight classes

八点四十分上课 Eight forty class

八点我们开始上课 We started eight classes

学校从八点起开始上课 School begins at eight

学校八点开始上课 classes begin at

每天八点开始上课 Classes begin every eight