Video narration
When you see someone or buy something, who or what receives the action-Wen, meaning whom, or Was, meaning what? That person or thing is the direct object in Akkusativ. Ich sehe den Mann; Ich kaufe die Tasche; Ich habe das Buch; Ich sehe die Kinder. Here, der becomes den; die stays die, das stays das, and plural die stays die. Now you: Ich sehe ___ Hund. Der, den, or dem? Den-because Hund is what I see.