它在星期一和星期五。

It's on Monday and Friday.

他们在星期一下午去。

They go on Monday afternoons.

他的语文课在星期一。

His Chinese class is on Monday.

我的组在星期一工作。

My group works on Mondays.

我在星期一放学后踢足球。

I play football after school on Mondays.

你不能在星期一参观博物馆。

You can't visit the museum on Mondays.

所以在星期一的物理课上，我也这样做了。

So in physics class on Monday, I did the same.

“我必须在星期一之前完成我的科学项目。”

I've got to finish my science project by Monday.

图书馆在星期一关闭。

The library is closed on Monday.

新项目将在星期一启动。

The new project will kick off on Mon.