台灣小學基礎文法知識與測驗 (02) Basic Grammar Knowlede for Primary School in Taiwan by David Pai https://drive.google.com/file/d/1dZ62YMENxkdg0-MHTrgPbR8ob2AhNGJQ/view?usp=sharing
台灣小學基礎文法知識與測驗(01) Basic Grammar Knowlede for Primary School in Taiwan by David Pai https://drive.google.com/file/d/1GfwV5UXnSJhNaJgLlm6UgXGlVZrxoJ2b/view?usp=sharing
小學英語分類字彙 Vocabulary For Elementary School By David Pai https://drive.google.com/file/d/1EacdDODhJ0hkX6w31srvCHY-uklwKaWv/view?usp=sharing Yutube https://youtu.be/0Kb57pj0yHI