① 介绍(introduction)
② 问候(greetings, goodbyes)
③ 邀请(invitations)
④ 道歉，安慰(apologies, condolences)
⑤ 感谢，称赞，祝贺(gratitude, compliments, congratulations)
⑥ 要求，命令，警告，指示 (requests, commands, warnings, directions)
⑦ 提议，批准(offers, seeking permission)
⑧ 忠告，意向(advice, intentions)
⑨ 高兴，不快(pleasure, displeasure)
⑩ 发表见解(expressing your opinion)，重新询问 (asking people to repeat themselves) , 打断某人讲话(interrupting someone) , 转移话题(changing the topic of conversation)