今天姐姐的英文怎么说呢

如果你想问今天你姐姐的英语怎么样，你可以这样说：

"How is your sister's Engpsh today?"

这个问句来源于英语口语中对别人的语言能力的常见询问。

其他一些可能有用的例句和翻译如下：

"My sister is really good at Engpsh. She speaks it fluently." (我姐姐的英语很好。她流利地说英语。)
"My sister is still learning Engpsh, so she makes a lot of mistakes." (我姐姐还在学习英语，所以她经常犯错误。)
"My sister is taking an Engpsh class to improve her skills." (我姐姐在上英语课来提高她的能力。)