used to say hello politely when people first see each other in the morning; sometimes also used formally when people leave each other in the morning (上午见面时用语,非正式场合常说 Morning)早上好,上午好,你(们)好;(有时用作上午告别时的正式用语)再见 He didn't even say ‘Good morning’. 他甚至连“早上好”都没说。