“改变心意”常见的英文表达有 change one's mind 或 have a change of heart。
change one's mind：这是一个非常常用且直接的短语，意思是改变之前的想法、决定或态度。例如：
I was going to buy that car, but then I changed my mind.（我本来打算买那辆车的，但后来我改变了心意。）
have a change of heart：这个表达更强调内心感受或态度的根本性转变，通常带有情感上的变化。例如：
After seeing the sad situation of the animals, she had a change of heart and decided to adopt one.（看到动物们可怜的处境后，她改变了心意，决定领养一只。）