今天下午的英文怎么说

"下午" 的英文表达是 "afternoon"。它来自英语中 "after" 和 "noon" 的组合，意思是午后的时间。

例句：

I'm going to meet my friends in the afternoon. (我下午要和朋友见面。)
Afternoon classes are always more difficult for me. (下午课对我来说总是更难。)
Would you pke to have lunch together this afternoon? (你今天下午愿意和我一起吃午饭吗？)