how doyou find out abut prefixes it is so anoyying when i have to think twice and try to rember what my techer says at school in class and well can any one help me here thanks a million

Answer 1

You might print this chart of prefixes so that you can refer to it any time.

http://www.englishclub.com/vocabulary/prefixes.htm

Answer 2

Millions before you have suffered through it and succeeded. No need to be annoyed. Make yourself flash cards, and in a few days you will have them memorized for life.