A person who is fluent in a foreign language can easily teach it.
Our modern world is unimaginable without a knowledge of foreign language.
The studying of foreign language is impossible without a teacher.
I consider that only specialist in teaching the foreign language can give you a solid knowledge.
The teacher study in the University.
He explains in details a study material.
This is very important in any studied subjects.
For example, not everyone who speaks foreign tongue can explain grammar of this language.
You would probably agree with me that the teacher is also psychologist.
He finds an individual method of learning for his student.
The teacher can be mentor and friend.
Thanks to the game and a friendly atmosphere the studied material remember easily.
Some opponents might say that a person who is fluent in the foreign language can teach another easily.
For example, he can speak foreign tongue with his pupil.
This is essential for studying the languages of other countries and improving the level of foreign language.
However voracious it sounds, I wouldn't agree with the above mentioned idea.
Specially trained people can improve any level of foreign language or teach from the beginning.
Unfortunately, a man who has fluent level of foreign tongue cannot do all of the given above.
In conclusion, I want to say that studying of foreign language is difficult task.
Man must choose the teacher wisely.