与不定式类似，现在分词做后置定语时，与前面的被修饰先行词有主谓，动宾，同位关系，可否各举一个例子，谢谢专家老师。

现在分词作后置定语分为以下2种情况

A:无动作含义现在分词作定语.(此时现在分词已经被形容词化，属于分词形容词，失去了动词的含义）

This voyage was the most exciting adventure of their lives. 

这次旅行是他们人生中最刺激的冒险经历。

A surprising number of customers order the same sandwich every day.  

每天点同一种三明治的顾客多得惊人。

B:具有动作含义现在分词作定语(相当于一个定语从句）

(1)表示主动/进行含义

The boy standing under the tree can speak English fluently.

=The boy who is standing under the tree can speak English fluently.

站在树下的男孩能够说一口流利的英语。  

The man talking to my teacher is my father.

=The man who is talking to my teacher is my father.

正在和我的老师讲话的那个人时我的父亲。   

(2)表示被动/进行的含义

The building being built is our teaching building.

=The building which is being built is our teaching building.

正在盖的楼房是我们的教学楼。

The boy being criticized by the teacher is called Tom.

=The boy who is being criticized by the teacher is called Tom.

正在被老师批评那个男孩叫汤姆。

(3)仅表示主动无进行的含义

The room facing south is our classroom.

=The room which faces south is our classroom.

朝南的那间房间是我们的教室。