她有一个哥哥用英文怎么说

"She has a brother" 用英语表达。

"She has a brother" 的来源是英语中最基本的句型之一，表示一个人有某个关系。

例句:

"She has a brother who is a doctor." (她有一个医生的哥哥。)
"My sister has a brother, but I don't." (我姐姐有一个哥哥，但我没有。)
"She has a brother and a sister." (她有一个哥哥和一个姐姐。)