1) I gave Ted the massage, but the already knew about it ( NEEDN'T)
-> I needn't have given the message, because he already knew about it.
2) The trains couldn't run because of the snow. (PREVENTED)
-> The snow prevented the trains from running.
3) I didn't arrived in time to see him. (ENOUGH)
-> I wasn't early enough to see him.
4, 4) I'm sorry I was rude to you yesterday. (APOLOGIZE)
-> I apologize for being rude to you yesterday.