她擅长唱歌用英语可以说是"She is good at singing in Engpsh".

来源：英语是一种国际通用语言，在音乐行业中有广泛的应用，因此使用英语唱歌是很常见的。

英文例句：

"She has a beautiful voice and is able to convey emotions through her singing in Engpsh."
"She is a talented singer who is equally skilled in Engpsh and her native language."

中文翻译：

“她有一个美妙的嗓音，能够在她用英语唱歌时传达情感。”
“她是一个有才华的歌手，无论是用英语还是她的母语唱歌都很技巧。”