指一个人在想法、态度或感受上发生了重大的转变，通常是从消极转为积极。

• He was going to sell the house, but he had a change of heart. ^{他本打算卖掉房子，但他后来改变了主意。}
• I hope the boss has a change of heart about our vacation time. ^{我希望老板对我们的假期安排能回心转意。}
• After talking to her, I had a change of heart about the project. ^{和她谈过之后，我对这个项目的看法发生了转变。}