When Bad Grammar Happens to Good people is a very useful book!
Everyone has bad language habits. We hear language errors
on TV, at work, and even from our family—so many times
that the errors might seem correct. But they’re still errors, and
they can make us sound less sophisticated, or even less intelligent,
than we really are.
Here is the guide about how to avoid common errors in english by Ann Batko
[get this widget]