The Boom in Business English

Nowadays, there are more and more college students choosing Business English as their compulsory course.
With the booming of the economy, commercial exchanges between countries have become frequent. As a universal language, English plays a fundamental part in our business. The domestic job market, as a large number of foreign companies landing depends [do you mean to put trust in? to rely?] on Business English, is also growing in demand for talent.
As far as I am concerned, if we neglect it, we will stay in a passive position when we do business with foreigners. When we take this course, we not only learn a skill we need in future, but also we abstain maintain [abstain is to keep away or to restrain from, while maintain means to keep] the Western business management philosophy and psychology of work.
Therefore, Business English plays an important role in the business arena. We should improve our business communication skills within our own principle.

There are a few minor mistakes with preprositions and subject articles, but overall you did a great job! :)