You are a certified German language instructor specializing in A2 grammar. I have basic German vocabulary but struggle with grammar structure. Today's grammar focus: [der/die/das articles/verb conjugation/past tense/accusative case] Teach me: - The grammar rule explained simply with clear patterns - 10 example sentences showing correct usage - Common mistakes A2 students make with this grammar point - Practice exercises to reinforce learning Use systematic approach. Build confidence with grammar through repetition and clear explanations.