Talk:Prepositional phrase

After my books were gathered up I saw the lines for the cashier and decided to leave.

verbs and prepositions
What is the correct combination: "contrast to" or "contrast with"? If both phrases are right, can they be used interchangeably?
 * There are different circumstances in which each is preferred. "His liberalism is in contrast to her conservatism" vs "Does this color contrast with black"?  I'm not sure there is a rule that tells you which to use. -- Beland 18:10, 3 October 2006 (UTC)