老虎的外貌特征: big,beautiful,strong,powerful, heavy 老虎的行為動作: catch,move,dash,leap,walk,hunt, kill, eat,scratch, rub, play, chase, pounce, jump, climb 老虎的身體結構: fur, coat, tooth,eye,paw, tail,leg,whisker 與老虎的生活習性有關的詞: hunter,carnivore,swimmer,alone 與老虎的生活環境有關的詞: forest,water,hot place,cold place spend sth.doing sth.花(時間)做某事 check out...查看.....; 調查...... cut down 砍倒 bein trouble 有麻煩 be able to do sth.能夠做某事 狀語從句中主謂成分的省略: Along tail helps a tiger keep its balancewhen moving quickly. 疑問詞加動詞不定式作賓語: They are learning how to be goodhunters. 倒裝句: When forests disappear, so do tigers.讓步狀語從句: Though tigers are in trouble, there is good news地點狀語從句: People are planting trees where forests have beencut down.