I recently introduced DW to my group, and we had a real problem with dodging.  I think I'm probably missing something, so I wanted to post here for some guidance.  Some version of this situation came up many times:

1.  Monster approaches player.
2.  Player does something other than attack.
3.  Monster attacks. 
4.  Player says "I try to dodge out of the way."

How does this get adjudicated?  I had them rolling Defy Danger (as "Defense" seems to be "Defense of Other" not "Defense of Self") and they kept rolling 7, 8, or 9.  Then I tried to think of what partial success would be.  It often involved falling over upon dodging.

That cannot be right.  But dodge is not calculated into armor like it is in Dungeons and Dragons (since armor is damage reduction here) and it seems odd that a player can do nothing when I say they're being attacked.  In fact, it seems impossible, since bad guys don't have attack rolls - it's all player centered.  (Unless I'm missing something.) 

So what happens?  Does the player have to just do nothing and take the blow?  It seems like there should be some equal mechanic to Hack & Slash, where on 7-9 the Monster gets to attack back.  If there is not, then on monster will attack, followed by player attacking at 7-9 giving the monster a free attack, and so on. 

Maybe my mindset is wrong (I still tend to gravitate to turn-based narration) or maybe I'm missing a rule.  Any help would be appreciated.