关于there be 句型后非谓语动词的用法.

问题描述:

关于there be 句型后非谓语动词的用法.
There have been several new events ___ to the program for the 2008 Beijing Olympic Games.
A.add B.to add C.adding D.added
答案是D我知道,我想问的是,不是说there be 后面+V.ing么?就象 There are some boys playing football.那为什么这道题又是选V.ed?是因为events 承受add的动作吗?还是因为there be 后面的非谓语动词要看具体情况,发出用ing,承受用ed?
答案我知道,我也知道它考的是非谓语动词,我不是要考点和答案!

是因为events 承受add的动作,也是因为there be 后面的非谓语动词要看具体情况,发出用ing~
发不出动作的话就用+ED咯