The exercise itself is in German; the explanation pages it links to are in Turkish.
n-Deklination (der Junge → den Jungen) (masculine nouns taking -n/-en)
Some masculine nouns take the ending -n/-en in every case except the Nominativ (n-Deklination): der Junge → den/dem/des Jungen. This group mainly includes nouns for living beings and professions: der Student, der Kunde, der Mensch, der Nachbar, der Herr (Sg. -n, Pl. -en). You will work out the correct form yourself in the exercise. All exercise content is in German.
Recognise: match the noun with its form in the required case. Always -n / -en except in the Nominativ.
Matched: 0 / 10Quick answer
What is in the "n-Deklination" exercise?
The "n-Deklination" exercise is at level B1 and has 5 steps with 50 questions in total: 10 matching items, 30 multiple-choice questions and 10 gap-fill items.
The steps in order: Match · Declension · Which noun? · Richtig/Falsch · Write.
You get instant feedback after every answer; the exercise runs in your browser, is free and needs no sign-up or installation.
Where can I study "n-Deklination"?
The explanation for this exercise is on the page N-Deklination – German Weak Noun Declension (A2/B1) (in Turkish). Read the rule there, then reinforce it with the 50 questions on this page.