Fatal attraction?

OBJECT PRONOUNS

A pronoun is the word that takes the place of the noun. The subject pronouns are the pronouns that are the subject of a sentence (I, you, he, she, it, we, they)

          Mary has a car ------> She has a car 
          Peter and I are happy -----> We are happy

The 'Object Pronouns' or complement pronouns are the pronouns used as a complement of the verb or after a preposition (me, you, him, her, it, us, them)

           Peter buys flowers for Lorraine -----> Peter buys flowers forher
           I like those shoes -----> I like them

Don't confuse them with the possessive adjectives. The possessive adjectives are adjectives, so they come before a noun. The pronoun substitutes the noun, so they come alone.

           Possessive adjective: Tom and Bob live with their parents
           Object pronoun: Tom and Bob live with them

Click  and do the exercises:

http://a4esl.org/q/h/9901/jd-pronouns.html

http://elt.oup.com/student/englishfile/elementary/a_grammar/file04/grammar04_c02?cc=global&selLanguage=en&mode=hub