Possessive pronouns in Swedish 1 - Sin, sitt, sina

Possessive pronouns (Possessiva pronomen)

1. my - min, mitt, mina
2. your - din, ditt, dina
3. his - hans; sin, sitt, sina
4. her - hennes; sin, sitt, sina
5. its - dess; sin, sitt, sina
6. our - vår, vårt, våra
7. your - er, ert, era
8. their - deras; sin, sitt, sina

The words "sin", "sitt" and "sina" are reflexive possessive pronouns in Swedish. According to Wikipedia, "A reflexive pronoun is a pronoun that is preceded by the noun or pronoun to which it refers (its antecedent) within the same clause".
Sin is used when defining singular objects, like this:
Han flyttade sin stol - He moved his chair
or
Hon flyttade sin stol - She moved her chair

As you can see, it doesn't differ between genders. But here's the tricky part. Remember en, ett, den and det? The reflexive possessive pronoun changes because of the noun being used in the sentence (in this case, stol becomes stolen when defined, since it's "en stol - a chair" and "stolen - the chair").

Sitt is also used with singular objects, like this:
Hon skadade sitt knä - She hurt her knee

As with sin, sitt doesn't differ between genders either. And the only reason for using sitt in this example is because knä becomes knäet when defined (as the Swedish language doesn't have a word for "the", I hope you know that by now :)

Sina is used with two objects or more, plural. It doesn't change form at all.
Han skrev ett brev till sina föräldrar - He wrote a letter to his parents
Mamman kramade sina barn - The mother hugged her children
Katten slickade sina tassar - The cat was licking its paws