the constructions which were built 20 years before were still standing on the street now.这句话语法对么?
问题描述：
the constructions which were built 20 years before were still standing on the street now.这句话语法对么?
答
The constructions which were built 20 years (ago) (are) still standing (in) the street now.（1）ago 和 before 区别.The constructions which were built 20 years before her birth are still standing in th...