Prefixes un- & re-

   Hello!   
   A prefix is a word part (afix) that is added to the beginning of a root word.Today's lesson was about the prefixes un-and re-: the prefix un- means "not" or "opposite of"; the prefix re- means "again" or "back to". Learning prefixes will help us better understand meanings of words.
    The words that were the basis for the explanation were:

    When the prefix re- and un- are added to a base word the meaning of the base word changes. The structure of the preset words is:

Prefix

+

Base Word

=

New Word

Meaning

re-	make	remake	to make again
re-	tell	retell	to tell again
un-	fair	unfair	not fair
un-	sure	unsure	the opposite of sure