保護層的種類: sharp spines,strong shells,super scales 有刺的動物: lionfish,porcupine,pufferfish,hedgehog 有殼的動物: snail,clam,turtle 有鱗的動物: bird.lizard,crocodile,turtle,snake,fish,pangolin 疑問代詞的用法，例如: what 指示代詞的用法，例如: this,that, these 副詞的用法，例如; quickly, slowly 連詞的用法，例如:and,but,if,when 時間狀語從句，例如: They shake and rattle when danger is near 定語從句，例如: A pufferfish has spines that lie flat.祈使句，例如: Stay away from a porcupine!