no clear concepts of "mother tongue" in modern sociolinguistics and ethnology does not exist.There are several different, sometimes opposing interpretations of the term.A study of self inherent in the concept of "native language" has long been an interdisciplinary sense.

debate between scientists and linguists are more theoretical, because in practice, more precisely, in the life, all just very clear.The native language of most people is the one in which the parents say.

The closest to a human mother tongue.One that absorbs a child with breast milk.Where for the first time he utters the two most important words: "Mom" and "Dad."Scientists call it the language learned in childhood without special training.Or the first native language.

Then the child goes to school and starting to get knowledge.Teachers tend to talk and conduct lessons in the state lan
guage of the country where a person lives.He wrote all the books and manuals.

Such language is common for students and adults surrounding the child.It is spoken by government officials and published documents.This language fits into the passport of his full name on reaching adulthood.

Most of the time a person begins to speak in this language, even if the house talking on the other.Scientists call it a second home for humans.It describes the case when the first native language in life changed to the one that is most often used by people.

second opinion is the fact that the mother tongue of the majority becomes the language in which they think.As well as writing and speaking effortlessly.This is the main language for communication and activities in society.Its scientists call functional first language that is the language by which man adapts to the surrounding society.

People may know the functional first language even better than the first native, but at the same time be linked to big names, which learned to talk.

third interpretation of the term "mother tongue" is the assertion that man is native to the language of his ancestors.The language that identifies its belonging to a particular ethnic group, nationality.

differences between linguistic terms rather conventional, whereas the native language of the common man is always the one that he likes the most.People's habits change with time and circumstances, but the preferences often remain unchanged.