Indicating the purpose or reason for something. She went to the store for some milk.
Indicating the recipient or beneficiary of an action. This gift is for you.
Indicating a period of time. He has been waiting for two hours.
Indicating a distance or extent. The road stretches for miles.
Indicating a comparison or contrast. For a beginner, she plays very well.
Indicating a substitution or exchange. I exchanged my sandwich for a salad.
Indicating support or favor. They voted for the new policy.
Towards; in the direction of. We're heading for the moon.