鯊魚的行為動作: glide, move,twist, turn, bend, swim, hunt, bite,leap, catch, attack 鯊魚的身體結構: tooth, tail fin, cartilage, skin, mouth, head,back,belty 鯊魚牙齒的分類: long spiky tooth,flat tooth, serrated tooth take one's place 代替某人;替換某人 watch out J心 go surfing 去沖浪 on purpose 故意地 be afraid to do sth害怕做某事 條件狀語從句: Ifa shark loses a tooth, a new one moves forwardto take its place. 時間狀語從句: The pups stay near the shallow water until they aregrown. 比較狀語從句: Sharks can see better than humans can. 賓語從句: You can imagine how big the shark must have been. 過去分詞短語作后置定語: Ahammerhead shark has a headshaped like a giant hammer.