英语国家用标点符号吗

是的，文章中使用标点符号。

一个完整的句子结尾，要用句号、问号、或者感叹号。如

I have lived in China for five years.

How old are you?

What a beautiful flower!

句子中间使用逗号。

I have a pen， two books， and a toy in the bag.

句子中间断开时使用分号。

I met him in the street yesterday he gave me a warm greeting.