“That was a really good publicity.”

>Mistake2Why wrong:  “Publicity” is non-count or mass noun.  Mass nouns can’t be plural or take an indefinite article (a or an means one, which is a number).

Correct it: With mass nouns, don’t use indefinite articles (a publicity) or make them plural (publicities). Say “That was really good publicity.”

Do you want to really know the difference between publicity and advertising? Contact Roy!  He will explain this and many other language points.