1.5元用英语可以表示为"one point five yuan". 来源: 英语是一种源自英国的语言, 而人民币（yuan）则来源于中国.

一些英文例句和翻译如下:

"I bought a bottle of water for one point five yuan." (我用1.5元买了一瓶水.)

"The price of the shirt is one point five yuan." (衬衫的价格是1.5元.)

"I only have one point five yuan left in my wallet." (我钱包里只剩下1.5元了.)