一道初二被动语态

问题描述:

一道初二被动语态
The workers are building a tall building.
A tall building()()()by the workers

The workers are building a tall building.(改被动语态)
A tall building (is) (being) (built) by the workers
一栋大楼正在被工人们修建.
这是现在进行时态的被动语态.