捕食者动物: great white shark, cheetah, parrot snake 大白鲨的身体部位: tail, skin, back fin,ears, eyes,nostrils, side fins,teeth 猎豹的身体部位: tail,back,eyes,ears,teeth,legs,claws 鹦鹉蛇的身体部位: eyes, skin, tongue, teeth, thin body, scutes 疑问代词的用法，例如: what, how 副词的用法，例如: quickly, slowly 介词的用法，例如: in,across,along,on 情态动词的用法，例如: can,may 定语从句，例如: They're just a few of the predators that share ourworld. 特殊疑问句，例如: What’s a predator? -般将来时的用法，例如: Each tooth will wear out