开心或悲伤的英文怎么说

开心（happy）来源于古英语中的 "hap"，意思是幸运、吉祥、美好的事情。悲伤（sad）则来源于中世纪拉丁语 "satis"，意思是满足、满意。

以下是一些例句：

I'm feepng happy today. (我今天很开心。)
She was sad when she heard the news. (她听到这个消息时很悲伤。)
His jokes always make me happy. (他的笑话总是让我开心。)
The movie was so sad that I couldn't help but cry. (这部电影太悲伤了，我忍不住哭了。)