“你”和“您”都是第二人称单数的面称用语。“你”是一般的称谓，用在同辈或比自己辈分小的人身上，还可以用在较熟悉的朋友之间的互称；“您”是用在对长辈或上级的面称，表示尊敬。

Both nǐ and nín are pronouns of “you”. The former is generally used with colleagues of one’s age, younger people, close friends or acquaintances. The latter is applied to elders or higher-ranking officers as a respectful form of addressing.

For example, Tom asked Peter: Will you go to the cinema? 汤姆问皮特：你会去看电影吗？
The secretary told her manager: You have a meeting at 4pm. 秘书告诉经理：您下午四点有会要开。