心形用英语表示为 "heart shape"。

这个词的来源可能源于古代人们用来描绘心脏的形状。心脏被认为是人类情感的中心，因此心形也被用来表示爱情、亲情和友情。

例句：

The couple exchanged heart-shaped pendants to symbolize their love for each other. (这对情侣交换了心形吊坠来象征他们彼此之间的爱情。)

The children made heart-shaped cookies for their mother on Mother's Day. (孩子们在母亲节为他们的妈妈做了心形饼干。)

The teacher hung a heart-shaped wreath on the door to welcome the students on the first day of school. (老师在门上挂了一个心形花环来欢迎学生们开学的第一天。)