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Grammar

Possessive pronouns and whose

Mine, yours, his, hers, ours, theirs, a friend of mine, and questions with whose.

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A possessive pronoun (mine, yours, hers) says who something belongs to, and it stands alone, without a noun after it: This bag is mine. To ask who the owner is, we use whose.

The words

Subject
Before a noun
Alone
I
my bag
mine
you
your bag
yours
he
his bag
his
she
her bag
hers
we
our bag
ours
they
their bag
theirs

His is the same in both columns. Its is almost never used alone.

  • "Is this your coat?" "No, mine is blue."
  • These aren't our seats. Ours are in row F.
  • My job is boring, but hers is really interesting.

Before a noun, or alone

Use my, your, her before a noun. Use mine, yours, hers when there is no noun after it.

  • This is my phone. This phone is mine.
  • Is that your car? Is that car yours?
  • Incorrect: This is mine bag.
  • Correct: This is my bag. / This bag is mine.
    Mine is never followed by a noun.
  • Incorrect: Excuse me, is this your?
  • Correct: Excuse me, is this yours?
    There is no noun after it, so use yours.

No apostrophe, no article

Possessive pronouns never have an apostrophe, and they don't take the.

  • The decision is yours.
  • Our flat is smaller than theirs.
  • Incorrect: Is this pen your's?
  • Correct: Is this pen yours?
    Yours, hers, ours and theirs are written with no apostrophe.
  • Incorrect: Your car is red, and the mine is grey.
  • Correct: Your car is red, and mine is grey.

A friend of mine

To say "one of my friends", English uses a friend of mine. After of in this pattern, use the possessive pronoun, not me or my.

  • A friend of mine works at the hospital.
  • Is Tom a colleague of yours?
  • We met a neighbour of ours at the station.
  • Incorrect: A friend of me lives in Berlin.
  • Correct: A friend of mine lives in Berlin.
    After a friend of, use mine, yours, his, hers, ours or theirs.

With a name, use 's: He's a friend of Anna's. (A friend of Anna is also heard.)

Whose: who is the owner?

Use whose to ask who something belongs to. It can go before a noun, or alone before is or are.

Whose + noun
Whose alone
Whose bag is this?
Whose is this bag?
Whose keys are these?
Whose are these keys?
  • "Whose coat is this?" "It's mine."
  • "Whose are these glasses?" "I think they're Sam's."
  • Incorrect: Whose this phone?
  • Correct: Whose phone is this?
    The question needs is: whose + noun + is + this.

Whose or who's

Whose and who's sound the same. Who's is the short form of who is or who has.

  • Whose turn is it?
    (Which person has the turn?)
  • Who's next?
    (Who is next?)
  • Incorrect: Who's umbrella is this?
  • Correct: Whose umbrella is this?
    Here we ask about the owner, so we write whose.

Answering: mine, yours, Anna's

Answer a question with whose with a possessive pronoun or with a name + 's.

  • "Whose is this sandwich?" "It's his."
  • "Whose idea was it?" "Ours."
  • "Whose car is outside?" "It's my sister's."

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Where this rule sits

All A2 rulesPronouns and determiners: all rules