Questions & Answers about Sie hat den König nicht erkannt.
Why doesn't the past participle have a ge- at the beginning, like geerkannt?
The verb erkennen (to recognize) starts with the prefix er-. Verbs with inseparable prefixes like er-, be-, or ver- never add ge- to their past participle. Because it is a mixed verb, it simply becomes erkannt.
Why does the sentence use den König instead of der König?
The king is the direct object of the sentence—he is the person being recognized. Because König is a masculine noun (der König), its article changes to the accusative case den.
Why does nicht go right before erkannt?
In the perfect tense, the past participle (erkannt) always goes at the very end of the sentence. When you negate the whole action of the sentence, the word nicht gets pushed as far to the end as possible, landing right in front of that past participle.
The English translation uses the simple past (did not recognize). Why does German use the perfect tense (hat erkannt)?