Кто хорошо разбирается в английском, проверьте плиз небольшой текст)

В принципе, весьма неплохо :-) Но ошибки есть. Общий стиль трогать не буду, но грамматику причешу :-).

NOWADAYS IT is very important TO know foreign languages because the relationship AMONG DIFFERENT countries are developing quickly. RussianS travel around the world but often do not understand the language of the foreign country. THIS CAUSES a lot of problems and inconveniences. Pupils In Russian schools learn only one foreign language. I think that this is not enough and two more foreign languages to the curriculum SHOULD BE INTRODUCED. Many Russian pupils do not want TO learn three foreign languages. They say knowledge of languages is not useful in life. Other pupils dO not want addition OF new subjects to the curriculum because they are afraid OF increasing the school workload. Some students believe that learnING three languages at the same time is impossible. I am sure that introduction of two foreign languages will be useful.
FirstLY, students WOULD BE ABLE TO study in detail culture and values of several countries simultaneously. This knowledge WOULD allow children to stretch THEIR mind.
Secondly, knowledge of three foreign languages WOULD help in the future to find a prestigious job.
Thirdly, students WOULD be able TO travel to other countries and communicate with foreigners.
If I could, I would like to learn French and Spanish.
French would help me to read French authors in original.
Spanish attracts me WITH THE WAY IT sounds. Also, I could move for livING to Spain with knowledge of the language.
So, I think that learning foreign languages will help pupils in the future.
They WOULD become more educated and intelligent. In the modern world COMMUNICATION is much appreciated. People from different countries must understand each other, but without studyING of foreign languages IT is impossible.

Где-то так :-)

very important TO know
а вообще мне впадлу сканировать так много текста

Ошибок нет.