在表示方位的介词in,on,to中、同学们往往容易混淆三个介词的使用方法,现辨析如下:1、“in”表示在什么范围之内。例如:Taiwan is in the southeast of China.(台湾位于中国的东南方)这里,台湾属于中国的一部分,应视为在范围内,故使用介词in。2、“on”表示两地之间相互接壤。? In the positional prepositions in,on,to, the students are often apt to confuse the use of the three prepositions. The differences are as follows: 1. In what range does “in” indicate? For example: Taiwan is in the southeast of China. (Taiwan is located in the southeast of China.) Here, Taiwan is part of China and should be regarded as being in the range. Therefore, the preposition “in” is used. 2. “on” means that the two places border each other. ?