中国人的称谓很复杂，同事之间可以称职务，如“麦总，刘经理”等，熟人之间可以直呼其名，或者在姓的前面加上“老，小”来称呼，如：“老王，小王”等。比较正式的场合对不熟悉的人一般可以称“先生，女士，太太，小姐”等。

The Chinese system of names and titles is by and large complicated. Titles may  be used to address each other among one’s colleagues, e.g. “màizǒng and Liú Jīnglǐ”. For acquaintances personal names and surnames may be preceded by “lǎo”(old) or “xiǎo”(young). Formal patterns of address include “xiānsheng”(mister,Sir). “nǚshì”(Ms or Mrs), “tàitai”(madam or Mrs) and “xiǎojie”(miss).

For example: colleagues greet to each other: Good morning, Wang Jingli!
             同事之间打招呼：王经理，早上好！

 Conversation between acquaintances：Xiao Li，pass me that cup of tea.
             熟人之间对话：小王，递给我那杯茶。

Formal pattern：The waiter opened the hotel door and said, come in, please, Miss.
             正式场合：侍者打开酒店的门说：小姐，请进！