To know how to explain the term "word building"
It's not as easy as the science of psychology
But necessary and it's really killing :)
A student must know the science of stylistics
Not only neutral the words are or elevated
There are a lot of problems in linguistics
Which for the students and professors are created
A student must be known in rules of grammar
To understand the usage of the tenses
You know that after "no" there is no "never"
The lack of knowledge can provoke offences.