他在一家工厂工作 He works in a factory(一般现在时).

问题描述:

他在一家工厂工作 He works in a factory(一般现在时).
自己添加时间状语和条件,将句子改成一般过去时、现在完成时、过去完成时、过去进行时、现在完成进行时、过去将来时.

he was worked in a factory two years ago.(一般过去时)he has worked in a factory since 2008.(现在完成时)he had worked in a factory before he went abord.(过去完成时)he had been working in a factory ...