动词的基本功能是作谓语，如果动词不作谓语，那就变为非谓语动词了。

非谓语动词可作后置定语的有：不定式、现在分词短语和过去分词短语。

一：不定式作后置定语：

1.Mary is the last one to leave the school.

2.I have much work to do.

二：现在分词短语作后置定语：

1.The girl cleaning the blackboard is our monitor.

2.The boy standing under a big tree is Tom's brother.

三：过去分词短语作后置定语：

1.She is a boy called Peter.

2.I like to read the books written by LuXun.