自我介绍嘛,就 Hi, I'm... Nice to meet u. 之类的
老朋友见面可以 how r u? what's up? how's it going? 之类的
老久不见的可以 long time no see. where have u been? i was looking for u. i miss u 之类的
开始语 hello everyone. hey guys. hi people. 之类的
结束语 that's it for today, have a nice day. sorry i have to go. Have fun. Take care. 之类的
至于去其它组嘛 That group seems like having an interesting conversation, i want to hear what they are talking about.
这些都是基本礼貌/问候。至于话题,因人而异,据情况而定,想象你平时和朋友聊些什么,就去那里聊些什么--八卦、趣事、知识、体验等等。轻松的去对待。
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