The Taj Mahal ______ (build) in the seventeenth century for the emperor Shah Jehan.A few years after he ______ (become)
问题描述：
The Taj Mahal ______ (build) in the seventeenth century for the emperor Shah Jehan.A few years after he ______ (become) ruler,his wife,Mumtaz-i-Mahal,______ (die).The Taj Mahal ______ (build) in her honour.Experts ______ (call) in from many parts of the world to construct the domes and to decorate the walls.The Taj Mahal which ______ (begin) in 1632 and ______ (complete) in 1654 ______ (cost) a fortune.Up to the present day,it ______ (visit) by millions of people.
但不知道为什么,比如第一空,为什么是 was built ,而不是has\had built尼.为什么有时用HAS,有时用HAD.
答
was built是被建造的意思,has的时候是在现在完成时的句子里,强调对现在的影响,had是用于过去完成时,事情发生在过去的过去,