英语 过去分词 现在分词 后置定语?

一、过去分词和现在分词 作定语,一般说来,如果是单个分词,就做前置定语,如果是分词短语,就做后置定语.但也有一些特殊的情况.
1.this is a developing country.
2.the lady talking with your teacher is a nurse.
3.he is an experienced teacher.
4.Tom hired a young worker called JOhn Hill.
二、动名词可直接放在名词前作定语.不能作后置定语.
Will the swimming pool be open today?