2016-06-23
xredued04
They’ve been married for twenty years.他们结婚已二十年了。
The war has lasted for a long time. 这场战争已经持续了很长时间。
7. 现在完成进行时不用于被动语态，若要用可用现在完成时的被动语态代替。如：
The house has been painted for a month. 这房子已漆了一个月。
The problem has been studied for five days.这个问题已研究了五天。