被动语态,求详解

问题描述:

被动语态,求详解
Last year in different areas there were another five schools ________ for the poor children,so more children have begun to go toschool.
A.built B.building C.to build
为什么没有be done的标志,而选A呢,是省略了什么吗?
这是什么知识点,求详解

答案:A解析:一、本题考查非谓语动词而非时态.Last year in different areas there were another five schools ________ for the poor children,本句中的成分已经完整:Last year时间状语 in different areas地点状...