in,on,to,off在用于描述地理位置

1 Shanghai is IN the east of China ------- IN强调在某个范围里面
2 Shanghai is TO the south of Beijing---------TO强调一个物体与另一个物体相对相望,在后者的范围以外
3 Shanghai is ON the south of Zhejiang---------ON强调一个物体与另一个物体在某个方位上连接
4 Island A is 50 kilometers OFF the east of Old York.--------OFF==AWAY FROM