什么是开心的英文怎么说

"��心"的英文是 "happy"。这个词来源于中世纪的英语单词 "hap", 这个单词本身来自古英语单词 "gehaep"，意思是"好运"或"幸运"。

例句:

I'm so happy to see you. (看到你我非常开心。)
She always has a happy smile on her face. (她总是脸上带着开心的微笑。)
He was overjoyed when he heard the news. (他听到这个消息时非常开心。)
The children were happy to be at the park. (孩子们很高兴在公园玩。)