Ving做后置定语：
1.Do you know the boy singing in the classroom?
2.The girl cleaning the room is my sister.
3.I don't know the boy swimming in the river.
4.The man lying on the ground is very poor.
5.I want to make friends with the student playing basketball now.
6.The woman sitting on the chair is my teacher.
V-ed做后置定语：
1.Do you know the boy named Tom?
2.The bridge built last year is very beautiful.
3.Why not help the student laughed at by his classmates?
4.The book taken by the teacher is mine.
5.Please help me repair the desks broken by my son yesterday.
6.Could you let me have a look at the problem solved by you just now?
