on saturday morning是什么时态的标志

All right. Let's make it at 8:00 on Saturday morning.

行。我们就定在星期六早上8点吧。

I always play with my friends on Saturday morning.

我在星期六早晨总是与我的朋友玩。

Are you free on Saturday morning to meet him?

你星期六上午有空去见他吗？

On Saturday morning I'm going shopping with my mother.

周六上午我要和妈妈一起去购物。

I'll look forward to that. Let's go early on Saturday morning.

我期待着去那里。咱们周六上午早点去吧。