恐龙的身体部位: bones,skin,neck,knees,ankles,toes,teeth 恐龙的分类: plant-eaters,meat-eaters 恐龙的繁殖方式:egg,nest, hatch 疑问代词的用法，例如: what,when, where 指示代词的用法，例如: this,that, these, those 副词的用法，例如:safely 情态动词的用法，例如: can,might 宾语从句，例如: A dinosaur's teeth tell us what it ate 特殊疑问句，例如: Where did they come from? -般过去时的用法，例如: The bones weren't always at themuseum.