/ˌɑ:ftəˈnu:n; US ˌæf- ||; ˌæftɚˈnun/noun [C,U] the part of a day between midday and about six o'clock 下午: I'll see you tomorrow afternoon. 我明天下午见你。What are you doing this afternoon? 你今天下午干什么？I studied all afternoon. 我整个下午都在学习。I usually go for a walk in the afternoon. 下午我通常去散一会儿步。He goes swimming every afternoon. 他每天下午都去游泳。She arrived at four o'clock in the afternoon. 她下午四点钟到达。Tom works two afternoons a week. 汤姆每星期工作两个下午。Are you busy on Friday afternoon ? 你星期五下午忙吗？ When we are talking about a particular afternoon we say on Monday, Tuesday, Wednesday, etc afternoon, but when we are talking generally about doing sth at the time of day we say in the afternoon. 某个特定的下午可以说on Monday afternoon、on Tuesday afternoon、on Wednesday afternoon等，一般的下午时间可以说in the afternoon。 good afternoon used when you see sb for the first time in the afternoon （午后打招呼用语）下午好 ☞Often we just say Afternoon ‘Good afternoon, Mrs Davies.’ ‘Afternoon, Jack.’ Look at the note at morning. 往往只说 Afternoon：“Good afternoon, Mrs Davies.”“下午好，戴维斯太太。”“Afternoon, Jack.”“下午好，杰克。”参看 morning 的注释。