我的梦想是成为一名舞蹈家。这句话的英文翻译是："My dream is to become a dancer."

来源：这句话是描述一个人对未来的愿望和目标，表达了这个人想要成为舞蹈家这一职业的渴望。

例句:

"Ever since I was a child, my dream has been to become a professional dancer." (自从我还是个孩子，我的梦想就是成为一名专业舞蹈演员。)
"My goal is to one day perform on Broadway as a dancer." (我的目标是有一天能作为舞蹈演员在百老汇表演。)
"I've always been passionate about dance, and my dream is to become a choreographer." (我一直对舞蹈充满热情，我的梦想是成为一名编舞家。)