如果你在网上买了很多东西，那么你不用付快递费。

Rúguǒ nǐ zài wǎngshàng mǎi le hěn duō dōngxi, nàme nǐ bú yòng fù kuàidìfèi.

If you buy a lot of things online, then you don’t have to pay for shipping.

你可以用手机付车费吗？

Nǐ kěyǐ yòng shǒujī fù chēfèi ma?

Can you pay the fare with your phone?

我们先付一半，剩下的下个月再付。

Wǒmen xiān fù yíbàn, shèngxià de xià gè yuè zài fù.

We will first pay half, and pay the rest next month.