For examples:<br/><br/>He threw the ball <b>to</b> me. (for me to catch)<br/><br/>He threw the ball <b>at</b> me. ( in order to hit me. He was angry with me)<br/><br/>He shouted <b>to</b> me ( to communicate with me)<br/><br/>He shoted <b>at</b> me ( Angry with me)