"I sit down on the chair."
Translation:Jag sätter mig på stolen.
This requires the reflexive object, right? "Jag sätter ned på stolen." doesn't work, correct?
Quite correct. :) You're putting something on the chair, and you need to specify what. If it's yourself, you use a reflexive object.
Woo! So it really means "I set myself", and you can set something else as well.