THE CAUSATIVE

   HAVE SOMETHING DONE    FORMULA  ( HAVE + OBJECT+ VERB IN PAST PARTICIPLE)


EXAMPLE :    MARIA IS HAVING HER DRESS DESIGNED BY THE ATYLOR
                                       HAVE          OBJECT      V. PAST PART

MY BROTHER    HAD  HIS CAR   REPAIRED     BY THE MECHANIC
                            HAVE  OBJECT   V. PAST PART.

VIDEO  ABOUT THE CAUSATIVE FORM
http://www.youtube.com/watch?v=affpJFO7DvY

PRACTICE SOME EXERCISES IN THIS LINK

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-76121.php