[ابو بيشو]

Incorrect: I have never seen a so good boy.
Correct: I have never seen such a good boy.
Correct: I have never seen so good a boy.
Incorrect: He was a so big man that he could not sit in that chair.
Correct: He was so big a man that he could not sit in that chair.
Read more at http://www.englishpractice.com/gramm...u0Z0uTlQrY7b4P
الرابط
Common Errors with Adjectives – Part II - English Practice