Three fifths of the workers in our factory___(已经受过训练)in that tech_英语解答

Three fifths of the workers in our factory___(已经受过训练)in that technical and engineering school
给出的词(train)详解 -

人气：224 ℃　时间：2019-08-22 13:36:05

解答

workers是主语,动词用复数
已经受过训练)表示要用have done的形式
工人是被训练的,所以要用被动形式
综上,答案是have been trained
Ps 如果有过去时间出现要考虑had done 形式