The Japanese Language

Japanese has an extensive grammatical system to express politeness and formality.

The Japanese language can express differing levels in social status. The differences in social position are determined by a variety of factors including job, age, experience, or even psychological state (e.g., a person asking a favour tends to do so politely). The person in the lower position is expected to use a polite form of speech, whereas the other might use a more plain form. Strangers will also speak to each other politely. Japanese children rarely use polite speech until they are teens, at which point they are expected to begin speaking in a more adult manner.

Whereas teineigo (丁寧語) (polite language) is commonly an inflectional system, sonkeigo (尊敬語) (respectful language) and kenjōgo (謙譲語) (humble language) often employ many special honorific and humble alternate verbs: iku "go" becomes ikimasu in polite form, but is replaced by irassharu in honorific speech and ukagau or mairu in humble speech.href="http://en.wikipedia.org/wiki/Japanese_language">1