问题补充：
be begun和began的区别,开始begin在什么时候可以用被动be begun?比如这一句吧The Taj Mahal,which was begun in 1632 .很是不解.(新概念第2册的练习题)/c?word=the%2Ctaj%2Cmahal%2Cwas%2Cbegun&url=http%3A//61%2E142%2E127%2E155/Resource/GZ/GZYY/XGNYY/XGNYYZXD/tbjx0075zw%5F0011%2Ehtm&b=0&a=69&user=baidu拉到最下面彩色的地方为什么不用主动的began并分析下began和be begun的用法, 英语
答案：
【答案】 再如：The bridge was begun five years ago and the estimated cost has already doubled.
建筑物动工这个概念,都用sth was begun
类似的我们可以说The bridge was started 5yrs ago.
当然一般begin用主动
如：
The film they want to watch begins at seven.
The meeting began promisingly,but then things started to go wrong.
电影开始,会议开始都是主动
但比较下就知道,桥梁不是开始,而是动工,所以被动
