they went to beijing three days ago.和the have been in Beijing for three days .句意有区别吗?

题目

they went to beijing three days ago.和the have been in Beijing for three days .句意有区别吗?
写错个单词．． 第2句第一个是they

答案

当然有啦.
前面那句话的意思是说“他们在3天前去了北京”,现在回没回来不知道；后面那句话的意思是说“他们已经到北京3天了”,现在还没回来,还在北京.
这就是一般过去式跟现在完成进行时的区别,相信你以后会慢慢体会出来.