When to use that and when to use which came up in a recent session with a student preparing for the ACT.
I started talking about restrictive and non restrictive clauses.
As his mind numbed and he slid toward unconsciousness, I resorted to blabbing on about essential versus non essential clauses.
He probably would have understood the distinction between that and which better had I pointed him to an article by Laura Brockway on Ragan.com.
Laura makes the distinction so clear that even I can understand it.
Check out her post about that versus which.
Eric is an English and history tutor in Wesley Chapel, Florida. He helps students prepare for the ACT and SAT. Call him at 813.787.8959.