当介词后面跟动词时要先看动词的用法.比如：Friendships between girls are usually based on shared feelings and support.这句话.之所以是based on shared,正因为shared是修饰feelinga and support的,并不是做动词出现.
当介词后面跟动词时要先看动词的用法.比如：Friendships between girls are usually based on shared feelings and support.这句话.之所以是based on shared,正因为shared是修饰feelinga and support的,并不是做动词出现.