Who's Misspelling Whose Words? (who's and whose)

Today we'll add another pair of often-confused words with the same pattern we saw in the last two posts.

The pronoun "who" isn't a personal pronoun but can be either relative or interrogative. Its possessive form, "whose," has no apostrophe.
He is the person WHOSE name was called. (relative pronoun)
WHOSE responsibility is it to clean the kitchen? (interrogative pronoun)

The pronoun "who" combines with "is" or "has" to make the contraction "who's" by dropping the "i" or "ha" and inserting an apostrophe.
WHO'S responsible for cleaning the kitchen? (WHO IS..)
WHO'S been responsible for cleaning the kitchen?  (WHO HAS been...)

Again it's important to remember-
              The possessive form has no apostrophe.
              The apostrophe is used in place of the missing letter or letters to make
                    the contraction.


           sentences using "whose"                      sentences using "who's"

Whose house is this?                                 Who's the owner of this house?
                                                                   Who's been living in this house?
Whose invitations have been mailed?       Who's coming to the party?
                                                                   Who's been invited to the party?
Whose experience is the most extensive? Who's the most experienced person?
                                                                   Who's had the most experience?
He is an author whose books I enjoy.        Who's your favorite author?
                                                                   Who's written your favorite books?