这次我没时间，下次再去吧。

Zhècì wǒ méi shíjiān, xiàcì zài qù ba.

I don't have time this time; let's go next time.

下次请早点来。

Xiàcì qǐng zǎodiǎn lái.

Please come earlier next time.

下次我们一起去北京。

Xiàcì wǒmen yìqǐ qù Běijīng.

Next time we will go to Beijing together.