用介词to表示所属关系的名词名词后用of表示所属关系是最常见的用法,但在某些特定的上下文中,主要是应一些名词的要求,必须用to来表示所属关系。常见这类名词有：key、answer、Monument、note、exit、entrance 、bridge、road、way、solution、visit记忆口诀： 钥匙答案纪念碑，注释索引和附录， 出口入口桥与路，参观介绍多用to。 eg：thekeytothebike自行车的钥匙，the key to success.theanswertothequestion问题的答案，theMonumenttothePeoplesHeroes人民英雄纪念碑，thenotetothetext课文注释，theexittothecinema电影院出口，thebridgetoknowledge知识桥梁，thewaytotheschool去学校的路， the road to victory. payavisittotheGreatWall参观长城 the solution to the problem.eg. Hard work is the key to success.Only one student knew the answer to the question.Mike thinks he has the key to success.The coach said that the road to victory is through practice.Who know the key to the room ?They didnt geta solution to the problem .All entrances to the city are guarded by armed men经典考题：1. Do you know the a to this question ?Keys:1. answer