Translation:Ik herken de vlag niet.
Why 'herken' with 'ik'? Is it a mistake, or is it a special verb with exceptional conjugation? I was expecting a "ik" ending, like 'Ik herk' or something... Could someone enlight me?
The infinitive is herkennen.
When must niet come at the end of the phrase and when must it come sirectly after the verb? I have been told i was wrong for both these placements in this lesson.
You can find more on word order here: https://www.duolingo.com/comment/3733010
And a very extensive section on dutchgrammar.com: http://www.dutchgrammar.com/en/?n=WordOrder.00
Placing niet before the direct object is a form of emphasis and contrast. Here is a link to an explanation of specifically how negation works in Dutch: http://www.dutchgrammar.com/en/?n=WordOrder.45
I love how "Ik herken de oranje niet" is an option here. Wij houden van oranje :)