分类：教育/科学-外语学习-英语考试
问题：Onthegateoftheconstructiontherei? 
 the gate of the construction there is a piece of board , which reads _____ without permission.A. Keep out B.Keep off C. Keep away D. Keep upkeep off是避开，不接近，而keep up是保持，维持。但其余两个在字典上查不到呀。
回答：ep out keep away keep off的区别①keep out=remain outside意为”留在外面“或=prevent...from entering意为”不让……入内“。例如：Keep out!Can\'t you read the sign on the door?别进去！难道你看不见门上的牌子吗？We should keep the enemy out of our country.我们应御敌于国门之外。Keep out of the sun.避免日照。This coat keeps out the wind.这大衣挡风。②keep away意为”不接近；离开；避开等“，away是副词，其后通常与from搭配使用。例如：Keep away from the fire!勿靠近火炉！③keep off意为”不接近；使离开“，off即可用作介词，也可用作副词。例如：Animals were afraid of fire,so they made a  big fire ti keep wild animals off(=keep off wildanimals).动物怕火，因此他们升起了一堆大火以防野兽接近。