星期五晚上我们可以放松一下，因为星期六不上课。

We can relax a bit on Friday evenings because there is no school on Saturday.

youdao

好主意！我们星期六不上课。

Good idea! We don't have classes on Saturday.

youdao

肖明星期六不弹钢琴。

Xiao Ming doesn't (play the piano) on (Saturday).

youdao

If you don't know that somebody should've taught you that in the 6th Grade or the 4th Grade or the 1st Grade or somewhere.

如果你不知道,那你们肯定是忘了,在六年级或四年级的时候老师肯定讲过,或者一年级,无所谓具体什么时候

耶鲁公开课 - 美国内战与重建课程节选