前置定语和后置定语用法不一样啊.1.动词现在分词单独作定语,通常放在所修饰词前.例如：
The sleeping boy is Tom.
2.现在分词短语作定语放在所修饰词的后面,意思同定语从句差不多.例如 ：
Tell the children playing outside not to make too much noise.= Tell the children who are playing outside not to make too much noise.
3.现在分词可相当于非限制性定语,常用逗号分开.例如：
Tom,wearing beautiful clothes,followed me down the hill.= Tom,who is wearing beautiful clothes,followed me down the hill.
4.有时现在分词可以和副词或名词构成复合词作定语.例如：
This is an English-speaking country.