One thing that the foreign students should know when they come to learn Chinese in China is that Chinese people always attach much attention to the politeness when communicating with other people. Therefore, you should learn some common Chinese expressions which show respect abs politeness when in communication. The following parts will introduce several useful patterns in detail in meaning and application to improve your language when you are talking with your Chinese friends.

First of all, when you hear Chinese people say借光, you should know it is a polite formula applied to ask for the others to give some convenience to the speaker like借光，我过去一下. It is more often used to ask for the others to make way for the speaker in such places as the department stores, elevators, streets or the corridors. Accordingly, you can say借光喽！被碰着您.

Another important and frequently used polite formula is 久仰, carrying the meaning that the speaker has heard of the other party’s name for a long time and admired him very much. For instance, 张先生！久仰久仰！五年前我就听说过您的大名了. But those who learn Mandarin should know that it is often used in formal occasion. You can also say您就是王总？久仰！

As one of the common polite formulas in Chinese language, 请多包涵is applied to ask for being excused or giving some care such as 孩子不懂事，闹了一中午，吵了您的午觉，请多包涵. Of course, you can add the objects like 您，你and你们after请. In this case, you can say我们初来乍到，很多规矩还不懂，请您多包涵.

Some students who study Mandarin online may say that Chinese people often say 请慢用when having dinner. Actually, it is used to ask the other party politely to have a meal. 请also can be followed by the objects like您and大家. Since it carries the respectful tone, it is also usually used on formal occasion like菜上齐了，请您慢用.