你不用叫他。

Nǐ bùyòng jiào tā.

You don't need to call him.

这些菜很多，你不用再点了。

Zhèxiē cài hěn duō, nǐ bùyòng zài diǎn le.

There are many dishes already; you don't need to order more.

这些菜已经够了，不用再点了。

Zhèxiē cài yǐjīng gòu le, búyòng zài diǎn le.

These dishes are already enough; no need to order more.