They may show how well a person can use English.
On one side of the book, the text is written using regular English.
If we cannot use English, good students will not come here.
Those who use English are supposed to be educated and successful.
It may show a great deal about the social and educational background of a person who uses English.
Essays should use standard English in a formal written form.
An art student who has a habit of using English in everyday speech.
Using English also allowed his books to be read in the colonial ruling nations.
For the most part, children are using standard English.
But I can use straight English, and that's good enough for me.