他写文章经常用错标点。

Tā xiě wénzhāng jīngcháng yòngcuò biāodiǎn.

He often uses the wrong punctuation when writing essays.

这篇文章里有很多错误的标点符号。

Zhè piān wénzhāng lǐ yǒu hěnduō cuòwù de biāodiǎn fúhào.

There are many incorrect punctuation marks in this article.

这里我应该用什么标点符号呢？

Zhèlǐ wǒ yīnggāi yòng shénme biāodiǎn fúhào ne?

What punctuation mark should I use here?