It's definitely, not definately.
It's "toe the line," not "tow the line."
Plural of Jones is Joneses, not Jones' or Jones's or Jone's. If you put a sign on your front door to say the Smith family lives here, it should read "The Smiths" not "The Smith's".
It's October 2008, not October, 2008.
It's "could have" or "could've," not "could of".
Are you sure about "toe the line"? I think it's "tow the line" but I could be wrong.
